返回键退回桌面.java
@Override
public void onBackPressed()
{
//实现Home键效果
//super.onBackPressed();这句话一定要注掉,不然又去调用默认的back处理方式了
Intent intent= new Intent(Intent.ACTION_MAIN);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
intent.addCategory(Intent.CATEGORY_HOME);
startActivity(intent);
}
让view浮到父视图顶层.java
view.bringToFront()
ViewGroup.bringChildToFront(View child)
获取屏幕高宽.java
DisplayMetrics metrics =getResources().getDisplayMetrics();
int width = metrics.widthPixels;
int height = metrics.heightPixels;
获取Android坐标系中点的位置.java
int[] locationArr = new int[2];
getLocationOnScreen(locationArr);//x=locationArr[0],y=locationArr[1]
//或者
x = getRawX();
y = getRawY();