我正在尝试让一个对象响应保留的单击。我可以通过按数百次屏幕来使其工作。我把日志行进行测试。我每次点击只会得到一个日志条目,但是我想重复条目直到放手为止。存在一个具有相同请求的问题here,但唯一的答案并未完全涵盖该主题,并且未解决该解决方案的所有问题。必须有一个更简单的方法。愤怒的小鸟点击并按住。我确实认为需要一个代码示例,但是如果需要的话,这里是一个。
public class GameView extends SurfaceView implements Runnable {
private Thread thread;
private boolean isPlaying;
public GameView( GameActivity activity, int screenx, int screeny ) {
super( activity );
//tried it here
/*setOnTouchListener(new OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
Log.d( "note", "hold" );
if(event.getAction() == MotionEvent.ACTION_UP){
// Do what you want
return true;
}
return false;
}
});*/
}
@Override
public void run() {
while ( isPlaying ) {
//do stuff
draw();
}
}
public void draw () {
if ( getHolder().getSurface().isValid() ) {
Canvas canvas = getHolder().lockCanvas();
//tried it here
setOnTouchListener(new OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
Log.d( "note", "hold" );
if(event.getAction() == MotionEvent.ACTION_UP){
// Do what you want
return true;
}
return false;
}
});
getHolder().unlockCanvasAndPost( canvas );
}
}
public void resume () {
isPlaying = true;
thread = new Thread( this );
thread.start();
}
public void pause () {
try {
isPlaying = false;
thread.join();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
@Override
public boolean onTouchEvent(MotionEvent event) {
//tried it here
Log.d( "note", "press" );
return true;
}
}
快到了,这就是我到目前为止所拥有的。剩下的唯一问题是,如果我单击并按住屏幕,然后再移动到另一个位置,则不会得到另一个mouseEvent。我需要event.getY()。
public boolean mouseDown = false;
public boolean onTouchEvent(MotionEvent event) {
Log.d( "note", "press" );
switch ( event.getAction() ) {
case MotionEvent.ACTION_DOWN:
Log.d( "note", "down" );
mouseDown = true;
mouseLooper( );
break;
case MotionEvent.ACTION_UP:
Log.d( "note", "up" );
mouseDown = false;
break;
}
return true;
}
public void mouseLooper ( ) {
while ( mouseDown ) {
Log.d( "note", "looping" );
}
}
***我可以在TouchEvent之外读取鼠标位置吗?
知道了,当鼠标或手指移动了多少次时,日志条目“ press”的确出现了。您可以从mouseLooper访问当前y位置,或发送给它的其他任何位置。这是工作代码示例。
public boolean mouseDown = false;
public boolean onTouchEvent(MotionEvent event) {
Log.d( "note", "press" );
mouseLooper( (int) event.getY() );
switch ( event.getAction() ) {
case MotionEvent.ACTION_DOWN:
Log.d( "note", "down" );
mouseDown = true;
mouseLooper( (int) event.getY() );
break;
case MotionEvent.ACTION_UP:
Log.d( "note", "up" );
mouseDown = false;
break;
}
return true;
}
public void mouseLooper ( int currentY ) {
while ( mouseDown ) {
Log.d( "note", "looping" );
}
}
最佳答案
您可以使用以下代码:
yourBtn.setOnTouchListener(new OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
if (event.getAction() == MotionEvent.ACTION_DOWN) {
//code that you want do when pressed
} else if (event.getAction() == MotionEvent.ACTION_UP) {
//code when touch stoped
}
return false;
}
});
您必须在代码末尾删除onTouch覆盖。
如果要重复代码,则可以使用while或带有处理程序的线程。