添加图片设置预览功能与一些调试入口。
This commit is contained in:
@@ -1,8 +1,8 @@
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#Created by .winboll/winboll_app_build.gradle
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#Fri Nov 21 14:24:01 HKT 2025
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#Fri Nov 21 10:22:55 GMT 2025
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stageCount=7
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libraryProject=
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baseVersion=15.11
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publishVersion=15.11.6
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buildCount=0
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buildCount=9
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baseBetaVersion=15.11.7
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@@ -45,6 +45,7 @@ public class NetworkBackgroundDialog extends AlertDialog {
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Context mContext;
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// 主线程 Handler,用于接收子线程消息并更新 UI
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private Handler mUiHandler;
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String previewFilePath;
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// 按钮点击回调接口(Java7 接口实现)
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public interface OnDialogClickListener {
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@@ -160,6 +161,9 @@ public class NetworkBackgroundDialog extends AlertDialog {
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@Override
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public void onClick(View v) {
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LogUtils.d("NetworkBackgroundDialog", "确认按钮点击");
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// 确定预览背景资源
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bvBackgroundPreview.saveToBackgroundSources(previewFilePath);
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dismiss(); // 关闭对话框
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if (listener != null) {
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listener.onConfirm();
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@@ -192,18 +196,15 @@ public class NetworkBackgroundDialog extends AlertDialog {
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File imageFile = new File(filePath);
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if (!imageFile.exists()) {
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LogUtils.e(TAG, "图片文件不存在:" + filePath);
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bvBackgroundPreview.setBackgroundResource(R.drawable.ic_launcher);
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ToastUtils.show("Test");
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//bvBackgroundPreview.setBackgroundResource(R.drawable.ic_launcher);
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return;
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}
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fis = new FileInputStream(imageFile);
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Drawable drawable = Drawable.createFromStream(fis, null);
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// 设置背景(主线程安全操作)
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if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.JELLY_BEAN) {
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bvBackgroundPreview.setBackground(drawable);
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} else {
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bvBackgroundPreview.setBackgroundDrawable(drawable);
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}
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// 预览背景
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previewFilePath = filePath;
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bvBackgroundPreview.previewBackgroundImage(previewFilePath);
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LogUtils.d(TAG, "图片预览成功:" + filePath);
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} catch (Exception e) {
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@@ -8,6 +8,9 @@ import androidx.fragment.app.Fragment;
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import cc.winboll.studio.libappbase.GlobalApplication;
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import cc.winboll.studio.libappbase.ToastUtils;
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import cc.winboll.studio.powerbell.R;
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import android.widget.Button;
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import cc.winboll.studio.powerbell.MainActivity;
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import android.content.Intent;
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/**
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* @Author ZhanGSKen&豆包大模型<zhangsken@qq.com>
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@@ -31,6 +34,14 @@ public class BackgroundViewTestFragment extends Fragment {
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mainView = inflater.inflate(R.layout.fragment_test_backgroundview, container, false);
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((Button)mainView.findViewById(R.id.btn_main_activity)).setOnClickListener(new View.OnClickListener(){
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@Override
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public void onClick(View v) {
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getActivity().startActivity(new Intent(getActivity(), MainActivity.class));
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}
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});
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ToastUtils.show(String.format("%s onCreate", TAG));
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return mainView;
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}
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@@ -6,7 +6,7 @@ import android.graphics.BitmapFactory;
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import android.graphics.drawable.BitmapDrawable;
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import android.graphics.drawable.Drawable;
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import android.util.AttributeSet;
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import android.view.View;
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import android.widget.ImageView;
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import android.widget.RelativeLayout;
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import cc.winboll.studio.libappbase.LogUtils;
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import cc.winboll.studio.powerbell.R;
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@@ -17,19 +17,22 @@ import java.io.FileOutputStream;
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/**
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* @Author ZhanGSKen&豆包大模型<zhangsken@qq.com>
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* @Date 2025/11/19 18:01
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* @Describe 背景图片视图控件(加载外置存储 Background/current.jpg)
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* @Describe 背景图片视图控件(支持预览临时图片 + 外部刷新)
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*/
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public class BackgroundView extends RelativeLayout {
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public static final String TAG = "BackgroundView";
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Context mContext;
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View mMianView;
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private ImageView ivBackground;
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// 外置存储背景图片路径:/storage/emulated/0/Android/data/应用包名/files/Background/current.jpg
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private static String BACKGROUND_IMAGE_FOLDER = "Background";
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private static String BACKGROUND_IMAGE_FILENAME = "current.data";
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private static String backgroundSourceFilePath;
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private static String BACKGROUND_IMAGE_PREVIEW_FILENAME = "current_preview.data";
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private static String backgroundSourceFilePath;
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private float imageAspectRatio = 1.0f; // 默认 1:1
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// 标记当前是否处于预览状态
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private boolean isPreviewMode = false;
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public BackgroundView(Context context) {
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super(context);
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@@ -56,172 +59,288 @@ public class BackgroundView extends RelativeLayout {
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}
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void initView() {
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// 1. 初始化外置存储背景图片路径(应用私有外置存储,无需动态权限)
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initBackgroundImageView();
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initBackgroundImagePath();
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// 2. 加载并设置背景图片
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loadAndSetBackground();
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loadAndSetImageViewBackground();
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}
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private void initBackgroundImageView() {
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ivBackground = new ImageView(mContext);
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RelativeLayout.LayoutParams layoutParams = new RelativeLayout.LayoutParams(
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LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
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layoutParams.addRule(RelativeLayout.CENTER_IN_PARENT);
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ivBackground.setLayoutParams(layoutParams);
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ivBackground.setScaleType(ImageView.ScaleType.FIT_CENTER);
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this.addView(ivBackground);
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}
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/**
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* 初始化外置存储背景图片路径
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* 路径:/storage/emulated/0/Android/data/应用包名/files/Background/current.jpg
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*/
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private void initBackgroundImagePath() {
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// 获取应用私有外置存储的 files 目录(API 19+ 无需权限)
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File externalFilesDir = mContext.getExternalFilesDir(null);
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if (externalFilesDir == null) {
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LogUtils.e(TAG, "外置存储不可用,无法初始化背景图片路径");
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return;
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}
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// 拼接 Background 目录和 current.jpg 文件路径
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File backgroundDir = new File(externalFilesDir, "Background");
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if(!backgroundDir.exists()){
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backgroundDir.mkdirs();
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}
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//BACKGROUND_IMAGE_PATH = new File(backgroundDir, "current.jpg").getAbsolutePath();
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//BACKGROUND_IMAGE_PATH = new File(backgroundDir, "current.data").getAbsolutePath();
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backgroundSourceFilePath = new File(backgroundDir, BACKGROUND_IMAGE_FILENAME).getAbsolutePath();
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//LogUtils.d(TAG, "背景图片路径:" + BACKGROUND_IMAGE_PATH);
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File backgroundDir = new File(externalFilesDir, BACKGROUND_IMAGE_FOLDER);
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if (!backgroundDir.exists()) {
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backgroundDir.mkdirs();
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}
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backgroundSourceFilePath = new File(backgroundDir, BACKGROUND_IMAGE_FILENAME).getAbsolutePath();
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}
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/**
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* 拷贝图片文件到背景资源目录
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* @param srcBackgroundPath 源文件路径(待拷贝的图片路径)
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*/
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public void saveToBackgroundSources(String srcBackgroundPath) {
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// 1. 初始化目标路径(确保路径有效)
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initBackgroundImagePath();
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if (backgroundSourceFilePath == null) {
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LogUtils.e(TAG, "目标路径初始化失败,无法保存背景图片");
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return;
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}
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/**
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* 拷贝图片文件到背景资源目录(正式背景)
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*/
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public void saveToBackgroundSources(String srcBackgroundPath) {
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initBackgroundImagePath();
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if (backgroundSourceFilePath == null) {
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LogUtils.e(TAG, "目标路径初始化失败,无法保存背景图片");
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return;
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}
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// 2. 校验源文件
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File srcFile = new File(srcBackgroundPath);
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if (!srcFile.exists() || !srcFile.isFile()) {
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LogUtils.e(TAG, String.format("源文件不存在或不是文件:%s", srcBackgroundPath));
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return;
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}
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File srcFile = new File(srcBackgroundPath);
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if (!srcFile.exists() || !srcFile.isFile()) {
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LogUtils.e(TAG, String.format("源文件不存在或不是文件:%s", srcBackgroundPath));
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return;
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}
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// 3. 创建目标目录(若不存在)
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File destFile = new File(backgroundSourceFilePath);
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File destDir = destFile.getParentFile();
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if (destDir != null && !destDir.exists()) {
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boolean isDirCreated = destDir.mkdirs();
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if (!isDirCreated) {
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LogUtils.e(TAG, "目标目录创建失败:" + destDir.getAbsolutePath());
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return;
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}
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}
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File destFile = new File(backgroundSourceFilePath);
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File destDir = destFile.getParentFile();
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if (destDir != null && !destDir.exists()) {
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boolean isDirCreated = destDir.mkdirs();
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if (!isDirCreated) {
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LogUtils.e(TAG, "目标目录创建失败:" + destDir.getAbsolutePath());
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return;
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}
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}
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// 4. 文件流拷贝(Java 7 原生实现,兼容低版本)
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FileInputStream fis = null;
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FileOutputStream fos = null;
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try {
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fis = new FileInputStream(srcFile);
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fos = new FileOutputStream(destFile); // 覆盖已有文件(如需询问用户可在此处添加逻辑)
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FileInputStream fis = null;
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FileOutputStream fos = null;
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try {
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fis = new FileInputStream(srcFile);
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fos = new FileOutputStream(destFile);
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// 缓冲区拷贝(提升效率,避免频繁 IO 操作)
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byte[] buffer = new byte[4096];
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int len;
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while ((len = fis.read(buffer)) != -1) {
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fos.write(buffer, 0, len);
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}
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fos.flush(); // 强制刷新缓冲区,确保数据完整写入
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byte[] buffer = new byte[4096];
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int len;
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while ((len = fis.read(buffer)) != -1) {
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fos.write(buffer, 0, len);
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}
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fos.flush();
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LogUtils.d(TAG, String.format("文件拷贝成功:%s -> %s", srcBackgroundPath, backgroundSourceFilePath));
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LogUtils.d(TAG, String.format("文件拷贝成功:%s -> %s", srcBackgroundPath, backgroundSourceFilePath));
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// 拷贝成功后,若处于预览模式则退出预览,加载正式背景
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if (isPreviewMode) {
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exitPreviewMode();
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} else {
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loadAndSetImageViewBackground();
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}
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} catch (Exception e) {
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// 捕获所有异常,避免崩溃
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LogUtils.e(TAG, String.format("文件拷贝失败:%s", e.getMessage()), e);
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// 拷贝失败时删除目标文件(避免生成损坏文件)
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if (destFile.exists()) {
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destFile.delete();
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LogUtils.d(TAG, "已删除损坏的目标文件");
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}
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} finally {
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// 5. 关闭流(Java 7 手动关闭,避免资源泄漏)
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if (fis != null) {
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try {
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fis.close();
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} catch (Exception e) {
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LogUtils.e(TAG, "输入流关闭失败:" + e.getMessage());
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}
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}
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if (fos != null) {
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try {
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fos.close();
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} catch (Exception e) {
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LogUtils.e(TAG, "输出流关闭失败:" + e.getMessage());
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}
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}
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}
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}
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} catch (Exception e) {
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LogUtils.e(TAG, String.format("文件拷贝失败:%s", e.getMessage()), e);
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if (destFile.exists()) {
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destFile.delete();
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LogUtils.d(TAG, "已删除损坏的目标文件");
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}
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} finally {
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if (fis != null) {
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try {
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fis.close();
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} catch (Exception e) {
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LogUtils.e(TAG, "输入流关闭失败:" + e.getMessage());
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}
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}
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if (fos != null) {
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try {
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fos.close();
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} catch (Exception e) {
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LogUtils.e(TAG, "输出流关闭失败:" + e.getMessage());
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}
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}
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}
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}
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/**
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* 加载外置存储的 current.jpg 并设置为控件背景
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* 支持:文件压缩、版本兼容、异常兜底
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* 【新增公共函数】预览临时图片(不修改正式背景文件)
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* @param previewImagePath 临时预览图片的路径
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*/
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private void loadAndSetBackground() {
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// 校验路径是否有效
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public void previewBackgroundImage(String previewImagePath) {
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if (previewImagePath == null || previewImagePath.isEmpty()) {
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LogUtils.e(TAG, "预览图片路径为空");
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return;
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}
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File previewFile = new File(previewImagePath);
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if (!previewFile.exists() || !previewFile.isFile()) {
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LogUtils.e(TAG, "预览图片不存在或不是文件:" + previewImagePath);
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return;
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}
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// 计算预览图片宽高比
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if (!calculateImageAspectRatio(previewFile)) {
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LogUtils.e(TAG, "预览图片尺寸无效,无法预览");
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return;
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}
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// 压缩加载预览图片
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Bitmap previewBitmap = decodeBitmapWithCompress(previewFile, 1080, 1920);
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if (previewBitmap == null) {
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LogUtils.e(TAG, "预览图片加载失败");
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return;
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}
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// 设置预览图片到 ImageView
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Drawable previewDrawable = new BitmapDrawable(mContext.getResources(), previewBitmap);
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if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.JELLY_BEAN) {
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ivBackground.setBackground(previewDrawable);
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} else {
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ivBackground.setBackgroundDrawable(previewDrawable);
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}
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// 调整 ImageView 尺寸以匹配预览图片宽高比
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adjustImageViewSize();
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isPreviewMode = true;
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LogUtils.d(TAG, "进入预览模式,预览图片路径:" + previewImagePath);
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}
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/**
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* 【新增公共函数】退出预览模式,恢复显示正式背景图片
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*/
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public void exitPreviewMode() {
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if (isPreviewMode) {
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loadAndSetImageViewBackground();
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isPreviewMode = false;
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LogUtils.d(TAG, "退出预览模式,恢复正式背景");
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}
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}
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/**
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* 公共函数:供外部类调用,重新加载正式背景图片(刷新显示)
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*/
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public void reloadBackgroundImage() {
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LogUtils.d(TAG, "外部调用重新加载背景图片");
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initBackgroundImagePath();
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loadAndSetImageViewBackground();
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// 若处于预览模式,退出预览
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if (isPreviewMode) {
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isPreviewMode = false;
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}
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}
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/**
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* 加载正式背景图片并设置到 ImageView
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*/
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private void loadAndSetImageViewBackground() {
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if (backgroundSourceFilePath == null) {
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setDefaultBackground();
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setDefaultImageViewBackground();
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return;
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}
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File backgroundFile = new File(backgroundSourceFilePath);
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// 校验文件是否存在
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if (!backgroundFile.exists() || !backgroundFile.isFile()) {
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LogUtils.e(TAG, "背景图片不存在:" + backgroundSourceFilePath);
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setDefaultBackground();
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setDefaultImageViewBackground();
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return;
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}
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// 3. 压缩加载 Bitmap(避免 OOM)
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Bitmap bitmap = decodeBitmapWithCompress(backgroundFile, 1080, 1920); // 最大宽高限制
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if (!calculateImageAspectRatio(backgroundFile)) {
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setDefaultImageViewBackground();
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return;
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}
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Bitmap bitmap = decodeBitmapWithCompress(backgroundFile, 1080, 1920);
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if (bitmap == null) {
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LogUtils.e(TAG, "图片加载失败,无法解析为 Bitmap");
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setDefaultBackground();
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setDefaultImageViewBackground();
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return;
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}
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// 4. 设置为控件背景(兼容 Android 低版本)
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Drawable backgroundDrawable = new BitmapDrawable(mContext.getResources(), bitmap);
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if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.JELLY_BEAN) {
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this.setBackground(backgroundDrawable);
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ivBackground.setBackground(backgroundDrawable);
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} else {
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this.setBackgroundDrawable(backgroundDrawable);
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ivBackground.setBackgroundDrawable(backgroundDrawable);
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}
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LogUtils.d(TAG, "背景图片加载成功");
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adjustImageViewSize();
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LogUtils.d(TAG, "ImageView 背景加载成功,宽高比:" + imageAspectRatio);
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}
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/**
|
||||
* 带压缩的 Bitmap 解码(避免大图导致 OOM)
|
||||
* @param file 图片文件
|
||||
* @param maxWidth 最大宽度限制
|
||||
* @param maxHeight 最大高度限制
|
||||
* @return 压缩后的 Bitmap(null 表示失败)
|
||||
* 计算图片宽高比(宽/高)
|
||||
*/
|
||||
private boolean calculateImageAspectRatio(File file) {
|
||||
try {
|
||||
BitmapFactory.Options options = new BitmapFactory.Options();
|
||||
options.inJustDecodeBounds = true;
|
||||
BitmapFactory.decodeFile(file.getAbsolutePath(), options);
|
||||
|
||||
int imageWidth = options.outWidth;
|
||||
int imageHeight = options.outHeight;
|
||||
|
||||
if (imageWidth <= 0 || imageHeight <= 0) {
|
||||
LogUtils.e(TAG, "图片尺寸无效:宽=" + imageWidth + ", 高=" + imageHeight);
|
||||
return false;
|
||||
}
|
||||
|
||||
imageAspectRatio = (float) imageWidth / imageHeight;
|
||||
return true;
|
||||
} catch (Exception e) {
|
||||
LogUtils.e(TAG, "计算图片宽高比失败:" + e.getMessage());
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* 动态调整 ImageView 尺寸以匹配图片宽高比
|
||||
*/
|
||||
private void adjustImageViewSize() {
|
||||
int parentWidth = getWidth();
|
||||
int parentHeight = getHeight();
|
||||
|
||||
if (parentWidth == 0 || parentHeight == 0) {
|
||||
post(new Runnable() {
|
||||
@Override
|
||||
public void run() {
|
||||
adjustImageViewSize();
|
||||
}
|
||||
});
|
||||
return;
|
||||
}
|
||||
|
||||
int imageViewWidth, imageViewHeight;
|
||||
if (imageAspectRatio >= 1.0f) { // 横图
|
||||
imageViewWidth = Math.min(parentWidth, (int) (parentHeight * imageAspectRatio));
|
||||
imageViewHeight = (int) (imageViewWidth / imageAspectRatio);
|
||||
} else { // 竖图
|
||||
imageViewHeight = Math.min(parentHeight, (int) (parentWidth / imageAspectRatio));
|
||||
imageViewWidth = (int) (imageViewHeight * imageAspectRatio);
|
||||
}
|
||||
|
||||
RelativeLayout.LayoutParams layoutParams = (RelativeLayout.LayoutParams) ivBackground.getLayoutParams();
|
||||
layoutParams.width = imageViewWidth;
|
||||
layoutParams.height = imageViewHeight;
|
||||
ivBackground.setLayoutParams(layoutParams);
|
||||
}
|
||||
|
||||
/**
|
||||
* 带压缩的 Bitmap 解码(避免 OOM)
|
||||
*/
|
||||
private Bitmap decodeBitmapWithCompress(File file, int maxWidth, int maxHeight) {
|
||||
try {
|
||||
BitmapFactory.Options options = new BitmapFactory.Options();
|
||||
options.inJustDecodeBounds = true; // 先获取图片尺寸,不加载到内存
|
||||
options.inJustDecodeBounds = true;
|
||||
BitmapFactory.decodeFile(file.getAbsolutePath(), options);
|
||||
|
||||
// 计算缩放比例
|
||||
int scaleX = options.outWidth / maxWidth;
|
||||
int scaleY = options.outHeight / maxHeight;
|
||||
int inSampleSize = Math.max(scaleX, scaleY);
|
||||
if (inSampleSize <= 0) {
|
||||
inSampleSize = 1; // 最小缩放比例为 1
|
||||
inSampleSize = 1;
|
||||
}
|
||||
|
||||
// 正式加载图片并压缩
|
||||
options.inJustDecodeBounds = false;
|
||||
options.inSampleSize = inSampleSize;
|
||||
options.inPreferredConfig = Bitmap.Config.RGB_565; // 降低像素格式,减少内存占用
|
||||
options.inPreferredConfig = Bitmap.Config.RGB_565;
|
||||
return BitmapFactory.decodeFile(file.getAbsolutePath(), options);
|
||||
} catch (Exception e) {
|
||||
LogUtils.e(TAG, "图片压缩加载失败:" + e.getMessage());
|
||||
@@ -232,9 +351,24 @@ public class BackgroundView extends RelativeLayout {
|
||||
/**
|
||||
* 设置默认背景(图片加载失败时兜底)
|
||||
*/
|
||||
private void setDefaultBackground() {
|
||||
// 可替换为项目自定义的默认背景图
|
||||
this.setBackgroundResource(R.drawable.default_background);
|
||||
LogUtils.d(TAG, "已设置默认背景");
|
||||
private void setDefaultImageViewBackground() {
|
||||
ivBackground.setBackgroundResource(R.drawable.default_background);
|
||||
imageAspectRatio = 1.0f;
|
||||
adjustImageViewSize();
|
||||
LogUtils.d(TAG, "已设置 ImageView 默认背景");
|
||||
}
|
||||
|
||||
@Override
|
||||
protected void onSizeChanged(int w, int h, int oldw, int oldh) {
|
||||
super.onSizeChanged(w, h, oldw, oldh);
|
||||
adjustImageViewSize();
|
||||
}
|
||||
|
||||
/**
|
||||
* 对外提供:判断当前是否处于预览模式
|
||||
*/
|
||||
public boolean isPreviewMode() {
|
||||
return isPreviewMode;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
@@ -8,9 +8,8 @@
|
||||
|
||||
<FrameLayout
|
||||
android:layout_width="match_parent"
|
||||
android:layout_height="0dp"
|
||||
android:id="@+id/activitymainunittestFrameLayout1"
|
||||
android:layout_weight="1.0"/>
|
||||
android:layout_height="match_parent"
|
||||
android:id="@+id/activitymainunittestFrameLayout1"/>
|
||||
|
||||
</LinearLayout>
|
||||
|
||||
|
||||
@@ -7,10 +7,17 @@
|
||||
android:layout_height="match_parent"
|
||||
android:background="#FF7381FF">
|
||||
|
||||
<TextView
|
||||
android:layout_width="wrap_content"
|
||||
android:layout_height="wrap_content"
|
||||
android:text="IT"/>
|
||||
<HorizontalScrollView
|
||||
android:layout_width="match_parent"
|
||||
android:layout_height="wrap_content">
|
||||
|
||||
<Button
|
||||
android:layout_width="wrap_content"
|
||||
android:layout_height="wrap_content"
|
||||
android:text="Main"
|
||||
android:id="@+id/btn_main_activity"/>
|
||||
|
||||
</HorizontalScrollView>
|
||||
|
||||
</cc.winboll.studio.powerbell.views.BackgroundView>
|
||||
|
||||
|
||||
Reference in New Issue
Block a user