Studio/APPBase_Bck20251205_123340_337
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改进网络图片下载与预览

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This commit is contained in:
ZhanGSKen
2025-11-21 03:38:42 +08:00
parent 47ea47cddc
commit 81950699b3
2 changed files with 131 additions and 57 deletions
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4
powerbell/build.properties
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@@ -1,8 +1,8 @@
#Created by .winboll/winboll_app_build.gradle
#Fri Nov 21 03:21:01 HKT 2025
#Thu Nov 20 19:36:49 GMT 2025
stageCount=5
libraryProject=
baseVersion=15.11
publishVersion=15.11.4
buildCount=0
buildCount=2
baseBetaVersion=15.11.5

152
powerbell/src/main/java/cc/winboll/studio/powerbell/dialogs/NetworkBackgroundDialog.java
View File

@@ -2,11 +2,12 @@ package cc.winboll.studio.powerbell.dialogs;
import android.content.Context;
import android.graphics.drawable.Drawable;
import android.os.Handler;
import android.os.Message;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.TextView;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AlertDialog;
@@ -14,9 +15,11 @@ import cc.winboll.studio.libappbase.LogUtils;
import cc.winboll.studio.libappbase.ToastUtils;
import cc.winboll.studio.powerbell.R;
import cc.winboll.studio.powerbell.utils.ImageDownloader;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import cc.winboll.studio.powerbell.views.BackgroundView;
import android.content.DialogInterface;
/**
* @Author ZhanGSKen&豆包大模型<zhangsken@qq.com>
@@ -26,6 +29,10 @@ import cc.winboll.studio.powerbell.views.BackgroundView;
*/
public class NetworkBackgroundDialog extends AlertDialog {
public static final String TAG = "NetworkBackgroundDialog";
// 消息标识：图片加载成功
private static final int MSG_IMAGE_LOAD_SUCCESS = 1001;
// 消息标识：图片加载失败
private static final int MSG_IMAGE_LOAD_FAILED = 1002;
// 控件引用
private TextView tvTitle;
@@ -36,6 +43,8 @@ public class NetworkBackgroundDialog extends AlertDialog {
private EditText etURL;
BackgroundView bvBackgroundPreview;
Context mContext;
// 主线程 Handler，用于接收子线程消息并更新 UI
private Handler mUiHandler;
// 按钮点击回调接口（Java7 接口实现）
public interface OnDialogClickListener {
@@ -48,14 +57,62 @@ public class NetworkBackgroundDialog extends AlertDialog {
// Java7 显式构造（必须传入 Context）
public NetworkBackgroundDialog(@NonNull Context context) {
super(context);
initHandler(); // 初始化 Handler
initView(); // 初始化布局和控件
setDismissListener(); // 设置对话框消失监听
}
// 带回调的构造（便于外部处理点击事件）
public NetworkBackgroundDialog(@NonNull Context context, OnDialogClickListener listener) {
super(context);
this.listener = listener;
initHandler(); // 初始化 Handler
initView();
setDismissListener(); // 设置对话框消失监听
}
/**
* 初始化主线程 Handler，用于更新 UI
*/
private void initHandler() {
mUiHandler = new Handler() {
@Override
public void handleMessage(Message msg) {
super.handleMessage(msg);
// 对话框已消失时，不再处理 UI 消息
if (!isShowing()) {
return;
}
switch (msg.what) {
case MSG_IMAGE_LOAD_SUCCESS:
// 图片加载成功，获取文件路径并设置背景
String filePath = (String) msg.obj;
setBackgroundFromPath(filePath);
break;
case MSG_IMAGE_LOAD_FAILED:
// 图片加载失败，设置默认背景
bvBackgroundPreview.setBackgroundResource(R.drawable.ic_launcher);
ToastUtils.show("图片预览失败，请检查链接");
break;
}
}
};
}
/**
* 设置对话框消失监听：移除 Handler 消息，避免内存泄漏
*/
private void setDismissListener() {
this.setOnDismissListener(new OnDismissListener() {
@Override
public void onDismiss(DialogInterface dialog) {
// 对话框消失时，移除所有未处理的消息和回调
if (mUiHandler != null) {
mUiHandler.removeCallbacksAndMessages(null);
}
LogUtils.d(TAG, "对话框已消失，Handler 消息已清理");
}
});
}
/**
@@ -76,8 +133,7 @@ public class NetworkBackgroundDialog extends AlertDialog {
btnConfirm = (Button) dialogView.findViewById(R.id.btn_confirm);
btnPreview = (Button) dialogView.findViewById(R.id.btn_preview);
etURL = (EditText) dialogView.findViewById(R.id.et_url);
//webViewPreview = (WebView) dialogView.findViewById(R.id.webview_preview);
bvBackgroundPreview = (BackgroundView) findViewById(R.id.bv_background_preview);
bvBackgroundPreview = (BackgroundView) dialogView.findViewById(R.id.bv_background_preview);
// 设置按钮点击事件
setButtonClickListeners();
@@ -116,12 +172,56 @@ public class NetworkBackgroundDialog extends AlertDialog {
@Override
public void onClick(View v) {
LogUtils.d("NetworkBackgroundDialog", "确认预览点击");
String url = etURL.getText().toString();
String url = etURL.getText().toString().trim();
if (url.isEmpty()) {
ToastUtils.show("请输入图片链接");
return;
}
ImageDownloader.getInstance(mContext).downloadImage(url, mDownloadCallback);
}
});
}
/**
* 根据文件路径设置 BackgroundView 背景（主线程调用）
* @param filePath 图片文件路径
*/
private void setBackgroundFromPath(String filePath) {
FileInputStream fis = null;
try {
File imageFile = new File(filePath);
if (!imageFile.exists()) {
LogUtils.e(TAG, "图片文件不存在：" + filePath);
bvBackgroundPreview.setBackgroundResource(R.drawable.ic_launcher);
return;
}
fis = new FileInputStream(imageFile);
Drawable drawable = Drawable.createFromStream(fis, null);
// 设置背景（主线程安全操作）
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.JELLY_BEAN) {
bvBackgroundPreview.setBackground(drawable);
} else {
bvBackgroundPreview.setBackgroundDrawable(drawable);
}
LogUtils.d(TAG, "图片预览成功：" + filePath);
} catch (Exception e) {
e.printStackTrace();
bvBackgroundPreview.setBackgroundResource(R.drawable.ic_launcher);
LogUtils.e(TAG, "图片预览失败：" + e.getMessage());
} finally {
// Java7 手动关闭流，避免资源泄漏
if (fis != null) {
try {
fis.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
/**
* 对外提供方法：修改对话框标题（灵活适配不同场景）
*/
@@ -147,49 +247,23 @@ public class NetworkBackgroundDialog extends AlertDialog {
this.listener = listener;
}
ImageDownloader.DownloadCallback mDownloadCallback = new ImageDownloader.DownloadCallback(){
ImageDownloader.DownloadCallback mDownloadCallback = new ImageDownloader.DownloadCallback() {
@Override
public void onSuccess(String filePath) {
ToastUtils.show(filePath);
ToastUtils.show("图片下载成功：" + filePath);
LogUtils.d(TAG, filePath);
String imagePath = "/storage/emulated/0/Android/data/cc.winboll.studio.powerbell.beta/files/mmexport1713182627221.png";
//String imagePath = filePath;
FileInputStream fis = null;
try {
fis = new FileInputStream(imagePath);
Drawable drawable = Drawable.createFromStream(fis, null);
// 设置背景
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.JELLY_BEAN) {
bvBackgroundPreview.setBackground(drawable);
} else {
bvBackgroundPreview.setBackgroundDrawable(drawable);
}
} catch (Exception e) {
e.printStackTrace();
//ivBackgroundPreview.setBackgroundResource(R.drawable.default_error); // 异常时显示默认图
bvBackgroundPreview.setBackgroundResource(R.drawable.ic_launcher); // 异常时显示默认图
} finally {
// Java7 手动关闭流，避免资源泄漏
if (fis != null) {
try {
fis.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
// 发送消息到主线程，携带图片路径
Message successMsg = mUiHandler.obtainMessage(MSG_IMAGE_LOAD_SUCCESS, filePath);
mUiHandler.sendMessage(successMsg);
}
@Override
public void onFailure(String errorMsg) {
ToastUtils.show(errorMsg);
LogUtils.d(TAG, errorMsg);
ToastUtils.show("下载失败：" + errorMsg);
LogUtils.e(TAG, errorMsg);
// 发送图片加载失败消息
mUiHandler.sendEmptyMessage(MSG_IMAGE_LOAD_FAILED);
}
};
}