在我的活动中,我可以将点全部拖到屏幕上。一旦我按下“后退”按钮,然后再次返回到活动中,点位置不会被保存。我应该怎么做?我无法保存以前的活动状态
private ImageView map;
private ImageView dot;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.map_layout);
map = (ImageView) findViewById(R.id.map);
dot = (ImageView) findViewById(R.id.dot);
MotionReceiver tc = new MotionReceiver();
LocalBroadcastManager.getInstance(this).registerReceiver(tc, new IntentFilter(Constants.TEXT_MOVEMENT));
}
@Override
public void onSaveInstanceState(Bundle savedInstanceState) {
super.onSaveInstanceState(savedInstanceState);
savedInstanceState.putFloat("X", dot.getX());
savedInstanceState.putFloat("Y", dot.getY());
}
@Override
public void onRestoreInstanceState(Bundle savedInstanceState) {
super.onRestoreInstanceState(savedInstanceState);
dot.setX(savedInstanceState.getFloat("X"));
dot.setY(savedInstanceState.getFloat("Y"));
}
是什么库/框架呢?标记问题以获得知道此特定产品的人的注意力。 – zubergu
@zubergu这是Android框架 – AxelH
@zubergu我做了标签#android –