bringToFront 工作一次,之后就不再工作了。为什么?当您单击一次时,它会将该视图置于前面,但是当您尝试将视图带回时,它不再起作用。触摸/点击一直都很好。
View view1,view2,view3,view4;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//sets the Bundle
//code to initiate and putting the views in layout
view1= findViewById(R.id.button1);
view2= findViewById(R.id.button2);
view1.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
Log.i("onClick","1");
view1.bringToFront();
view1.invalidate();
view2.invalidate();
}
});
view2.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
Log.i("onClick","2");
view2.bringToFront();
view1.invalidate();
view2.invalidate();
}
});
}
这是xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".MainActivity" >
<TextView
android:id="@+id/button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="16dp"
android:layout_marginLeft="30dp"
android:text="Button2ButtonButton"
android:textColor="#00ff00"
android:textSize="60dp" />
<TextView
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="16dp"
android:layout_marginLeft="170dp"
android:text="Button1ButtonButton"
android:textColor="#ff0000"
android:textSize="60dp" />
</RelativeLayout>