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每文檔多點觸控問題,我想出了下面....與Android
public class ZoomActivity extends Activity implements View.OnTouchListener{
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_zoom);
View v = findViewById(R.id.textv);
v.setOnTouchListener(this);
}
@Override
public boolean onTouch(View arg0, MotionEvent arg1) {
CharSequence text="";
switch(arg1.getAction()){
case (MotionEvent.ACTION_POINTER_DOWN):
text = "Pointer Down ";
break;
case (MotionEvent.ACTION_DOWN):
text = "Down Action ";
break;
}
if(arg1.getPointerCount()>1){
text = text + "Multiple Presses "+arg1.getPointerCount();
}
else{
text = text + "Single Press";
}
if(arg1.getHistorySize() > 0){
text = text + " Previous x is "+arg1.getHistoricalAxisValue(MotionEvent.AXIS_X, 0);
}
else{
text = text + " First press";
}
int duration = Toast.LENGTH_LONG;
Toast toast = Toast.makeText(getApplicationContext(), text, duration);
toast.show();
return false;
}
}
問題是,當我在我的設備運行的getPointerCount始終爲1。我在想什麼嗎?
測試和測試你的derp場景都返回true,但我仍然無法獲得多個指針。感謝您的嘗試.... – Jackie
出於好奇。如果您返回true,會發生什麼 - 因爲從重寫的事件返回false意味着您沒有處理它並返回到鏈中,不是?只是一個想法。 – LokiSinclair
我剛剛看到,實際上也讓我檢查 – Jackie