android 获取当前具有focus的activity 安卓获取当前activity

mHelper = new SwipeBackActivityHelper(this);
mHelper.onActivityCreate();
}
@Override
protected void onPostCreate(Bundle savedInstanceState) {
super.onPostCreate(savedInstanceState);
mHelper.onPostCreate();
}
@Override
public View findViewById(int id) {
View v = super.findViewById(id);
if (v == null && mHelper != null)
return mHelper.findViewById(id);
return v;
}
@Override
public SwipeBackLayout getSwipeBackLayout() {
return mHelper.getSwipeBackLayout();
}
@Override
public void setSwipeBackEnable(boolean enable) {
getSwipeBackLayout().setEnableGesture(enable);
}
@Override
public void scrollToFinishActivity() {
Utils.convertActivityToTranslucent(this);
getSwipeBackLayout().scrollToFinishActivity();
}
}

2、复制demo中attrs文件及资源文件到values文件夹下

3、base类继承侧换基类即可

public class BaseFragmentActivity extends SwipeBackActivity {
@Override
protected void onCreate(Bundle arg0) {
super.onCreate(arg0);
}
@Override
public void onResume() {
super.onResume();
}
@Override
public void onPause() {
super.onPause();
}
@Override
protected void onNewIntent(Intent intent) {
super.onNewIntent(intent);