java - 如何在 Android Studio 中触摸多个按钮而不释放屏幕

Question

像这样

1 /image/VUNz2.png

我想在不释放的情况下滑动更多按钮。此代码不起作用，它说应用程序停止工作

public class MainActivity extends AppCompatActivity implements View.OnTouchListener {
     //my buttons
    Button b1, b2, b3;
    //my text view
    TextView txt;
    //my layout if you need it
     LinearLayout myl;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        //my buttons
         Button b1 = findViewById(R.id.b1);
         Button b2 = findViewById(R.id.b2);
         Button b3 = findViewById(R.id.b3);

         //text view
        TextView txt = findViewById(R.id.txt);
        //my layout if you need it
        final LinearLayout myl = findViewById(R.id.myl);


        b1.setOnTouchListener(this);
        b2.setOnTouchListener(this);
        b3.setOnTouchListener(this);
    }

    @Override
    public boolean onTouch(View view, MotionEvent motionEvent) {

         if (motionEvent.getAction() == MotionEvent.ACTION_DOWN) {

           //touch Events
            switch (view.getId()) {

                 //b1 touch event
                case R.id.b1:

                    txt.setText(txt.getText().toString() + b1.getText().toString());
                    break;

                //b2 touch event
                case R.id.b2:

                    txt.setText(txt.getText().toString() + b2.getText().toString());
                    break;

                   //b3 touch event
                case R.id.b3:

                    txt.setText(txt.getText().toString() + b3.getText().toString());
                    break;
         }
        }

            return false;

    }
}

我希望在这个网站上找到答案..非常感谢

this code does not working its says app stopped working

Answer 1

当你触摸button1时，即使你移动到button2上方(不释放)，button2也不会收到任何onTouchAction。相反，您可以检查 x,y 坐标来检查用户是否将手指移动到其他按钮并执行操作。