Android仿微信activity滑动关闭

1.利用具体利用v4包下的slidingPaneLayout实现透明的activity；代码如下：

BaseActivity:

public class BaseSlideCloseActivity extends AppCompatActivity implements        SlidingPaneLayout.PanelSlideListener {    @Override    protected void onCreate(Bundle savedInstanceState) {        initSlideBackClose();        super.onCreate(savedInstanceState);    }    private void initSlideBackClose() {        if (isSupportSwipeBack()) {            SlidingPaneLayout slidingPaneLayout = new SlidingPaneLayout(this);            // 通过反射改变mOverhangSize的值为0，            // 这个mOverhangSize值为菜单到右边屏幕的最短距离，            // 默认是32dp，现在给它改成0            try {                Field overhangSize = SlidingPaneLayout.class.getDeclaredField("mOverhangSize");                overhangSize.setAccessible(true);                overhangSize.set(slidingPaneLayout, 0);            } catch (Exception e) {                e.printStackTrace();            }            slidingPaneLayout.setPanelSlideListener(this);            slidingPaneLayout.setSliderFadeColor(getResources()                    .getColor(android.R.color.transparent));            // 左侧的透明视图            View leftView = new View(this);            leftView.setLayoutParams(new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT));            slidingPaneLayout.addView(leftView, 0);            ViewGroup decorView = (ViewGroup) getWindow().getDecorView();            // 右侧的内容视图            ViewGroup decorChild = (ViewGroup) decorView.getChildAt(0);            decorChild.setBackgroundColor(getResources()                    .getColor(android.R.color.white));            decorView.removeView(decorChild);            decorView.addView(slidingPaneLayout);            // 为 SlidingPaneLayout 添加内容视图            slidingPaneLayout.addView(decorChild, 1);        }    }    protected boolean isSupportSwipeBack() {        return true;    }    @Override    public void onPanelSlide(View panel, float slideOffset) {    }    @Override    public void onPanelOpened(View panel) {        finish();    }    @Override    public void onPanelClosed(View panel) {    }}

activity 透明style：

xmlns:tools="http://schemas.android.com/tools">

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