Android手势无法正常工作图片
问题描述:
我试图让滑动手势只能在简单的图像上工作。有没有人没有为什么它不工作。我得到“ontouchnow
”,但没有左或右显示在textview上。Android手势无法正常工作图片
我列出了下面的代码:
public class MainActivity extends AppCompatActivity {
private GestureDetectorCompat gesyObject;
private TextView textView2;
private ImageView imageView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
gesyObject = new GestureDetectorCompat(this, new GesyOne());
textView2 = (TextView) findViewById(R.id.textView2);
imageView = (ImageView) findViewById(R.id.imageView);
imageView.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
textView2.setText("ontouchnow");
return gesyObject.onTouchEvent(event);
}
});
}
/*@Override
public boolean onTouchEvent(MotionEvent event) {
this.gesyObject.onTouchEvent(event);
return super.onTouchEvent(event);
} */
class GesyOne extends GestureDetector.SimpleOnGestureListener{
@Override
public boolean onFling(MotionEvent event1, MotionEvent event2, float velocityX, float velocityY) {
if (event2.getX() > event1.getX()) {
textView2.setText("LEFT");
} else if (event2.getX() < event1.getX()) {
textView2.setText("RIGHT");
}
return true;
}
}
}
答
我现在这个工作。需要添加onDown运动事件返回true。排序。