compile 'me.imid.swipebacklayout.lib:library:1.0.0'

package com.example.yiba8.myapplication;
import android.os.Bundle;
import android.util.DisplayMetrics;
import android.view.View;
import android.widget.TextView;
import me.imid.swipebacklayout.lib.SwipeBackLayout;
import me.imid.swipebacklayout.lib.app.SwipeBackActivity;
public class BackActivity extends SwipeBackActivity {
private TextView back ;
private SwipeBackLayout mSwipeBackLayout;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_back);
mSwipeBackLayout = getSwipeBackLayout();
int flag1 =   SwipeBackLayout.EDGE_LEFT ;   //左滑
int flag2 =   SwipeBackLayout.EDGE_RIGHT ;  //右滑
int flag3 =   SwipeBackLayout.EDGE_BOTTOM ; //下滑
int flag4 =   SwipeBackLayout.EDGE_ALL ;    //全部
//设置滑动模式
        mSwipeBackLayout.setEdgeTrackingEnabled(flag4);
//自动调用滑动模式
back = (TextView) findViewById( R.id.back );
back.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
scrollToFinishActivity();
}
});
//设置是否可以滑动
mSwipeBackLayout.setEnableGesture(true);
//获取屏幕的宽度
DisplayMetrics dm = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(dm);
int  phoneWidth  = dm.widthPixels ;
//设置侧滑的区域为屏幕宽度的1/3，如果不设置系统默认为50dip
mSwipeBackLayout.setEdgeSize( phoneWidth / 3  );
}
}

    <!-- Base application theme. -->
<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
<!-- Customize your theme here. -->
<item name="colorPrimary">@color/colorPrimary</item>
<item name="colorPrimaryDark">@color/colorPrimaryDark</item>
<item name="colorAccent">@color/colorAccent</item>
</style>

    <style name="AppBackTheme"  parent="@style/AppTheme">
<item name="android:windowIsTranslucent">true</item>
</style>

       <!--  侧滑返回  -->
<activity
android:theme="@style/AppBackTheme"
android:name=".BackActivity">
</activity>