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使用进度条控制画布控件缩放

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- 移除顶部放大/缩小按钮，改用底部SeekBar进度条控制
- 缩放范围0.1-5.0对应进度条0-100
- 添加setScaleFactor()方法
This commit is contained in:
ZhangShaojian
2026-04-28 10:01:10 +08:00
parent e07931fd3b
commit ae3a0c6f64
4 changed files with 58 additions and 31 deletions
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52
gallery/src/main/res/layout/activity_crop.xml
View File

@@ -34,22 +34,6 @@
android:layout_height="0dp"
android:layout_weight="1"/>
<ImageView
android:id="@+id/btn_zoom_out"
android:layout_width="48dp"
android:layout_height="48dp"
android:padding="12dp"
android:src="@drawable/ic_zoom_out"
android:background="?attr/selectableItemBackgroundBorderless"/>
<ImageView
android:id="@+id/btn_zoom_in"
android:layout_width="48dp"
android:layout_height="48dp"
android:padding="12dp"
android:src="@drawable/ic_zoom_in"
android:background="?attr/selectableItemBackgroundBorderless"/>
<ImageView
android:id="@+id/btn_done"
android:layout_width="48dp"
@@ -84,4 +68,40 @@
</ScrollView>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="56dp"
android:layout_gravity="bottom"
android:orientation="horizontal"
android:gravity="center_vertical"
android:background="@color/colorPrimary"
android:paddingHorizontal="16dp"
android:layout_marginBottom="0dp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="缩小"
android:textColor="@android:color/white"
android:textSize="12sp"/>
<SeekBar
android:id="@+id/seekbar_zoom"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:min="0"
android:max="100"
android:progress="50"
android:layout_marginHorizontal="8dp"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="放大"
android:textColor="@android:color/white"
android:textSize="12sp"/>
</LinearLayout>
</FrameLayout>