焦点去哪儿了？ANDROID焦点控制问题
16lz
2021-01-25
从numc控件按向右键，焦点丢失，可以使用focusSearch查找焦点去哪了。前提是布局里的控件都有tag标签属性，以便LOG输出。
numc.setOnKeyListener(new OnKeyListener(){
@Override
public boolean onKey(View arg0, int arg1, KeyEvent arg2) {
// TODO Auto-generated method stub
if(arg2.getAction()==KeyEvent.ACTION_DOWN)
if(arg1==KeyEvent.KEYCODE_DPAD_RIGHT){
Log.d(TAG, (String) arg0.focusSearch(66).getTag());
}
return false;
}
});
参数为int
public static final int FOCUS_DOWN
Added in API level 1Use with focusSearch(int). Move focus down.
public static final int FOCUS_LEFT
Added in API level 1Use with focusSearch(int). Move focus to the left.
public static final int FOCUS_RIGHT
Added in API level 1Use with focusSearch(int). Move focus to the right.
public static final int FOCUS_UP
Added in API level 1Use with focusSearch(int). Move focus up.
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