对市面上实现的侧划返回不是很满意（仿微信，QQ 通过修改窗口透明坑太多），最终决定还是亲手写一个高实用性的吧，效果如下所示，换个图标，更多划动功能可以由你自己解锁，总共一个 600 多行代码的类，推荐通过阅读源码，你肯定会收获很多哈。
Gradle:
implementation 'com.blankj:swipe-panel:1.2'final SwipePanel swipePanel = new SwipePanel(this);
swipePanel.setLeftEdgeSize(SizeUtils.dp2px(100));// 设置左侧触发阈值 100dp
swipePanel.setLeftDrawable(R.drawable.base_back);// 设置左侧 icon
swipePanel.wrapView(findViewById(R.id.rootLayout));// 设置嵌套在 rootLayout 外层
swipePanel.setOnFullSwipeListener(new SwipePanel.OnFullSwipeListener() {// 设置完全划开松手后的监听
@Override
public void onFullSwipe(int direction) {
finish();
swipePanel.close(direction);// 关闭
}
});<com.blankj.swipepanel.SwipePanel
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/swipePanel"
android:background="@color/mediumGray"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".LayoutSwipePanelActivity"
app:isLeftCenter="false"
app:leftEdgeSize="100dp"
app:leftSwipeColor="@color/colorPrimary"
app:leftDrawable="@drawable/base_back">
...
</com.blankj.swipepanel.SwipePanel>| 方法名 | 属性名 | 说明 |
|---|---|---|
| setLeft(Top, Right, Bottom)SwipeColor | app:left(top, right, bottom)SwipeColor | 设置左（上、右、下）侧颜色 |
| setLeft(Top, Right, Bottom)EdgeSize | app:left(top, right, bottom)EdgeSize | 设置左（上、右、下）侧触发阈值 |
| setLeft(Top, Right, Bottom)Drawable | app:left(top, right, bottom)Drawable | 设置左（上、右、下）侧 icon |
| setLeft(Top, Right, Bottom)Center | app:isLeft(Top, Right, Bottom)Center | 设置左（上、右、下）侧是否居中 |
| setLeft(Top, Right, Bottom)Enabled | app:isLeft(Top, Right, Bottom)Enabled | 设置左（上、右、下）侧是否可用 |
| wrapView | --- | 设置嵌套在该 view 的外层 |
| setOnFullSwipeListener | --- | 设置完全划开松手后的监听 |
| setOnProgressChangedListener | --- | 设置进度变化的监听 |
| isOpen | --- | 判断是否被划开 |
| close | --- | 关闭 |
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