Question

我使用选择器通过将每个按钮的背景设置为drawable/selectors.xml来更改某些按钮的颜色。

当用户按下按钮时，按钮的颜色会发生变化。但是，如果我想查看用户按下哪个按钮怎么办？如何设置事件以检查USER对按钮的单击。

Answer 1

使用isPressed（）方法可以做类似的事情

Button myBu= (Button) findViewById(R.id.button);
        myBu.isPressed();// example how to use it
        Log.d("is pressed?", "" + myBu.isPressed());//false, not pressed

        myBu.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Log.d("is pressed", "" + v.isPressed());//true,pressed
            }
        });

Answer 2

如果您的布局有多个Button，则需要尝试实施View.OnClickListener以查找Button点击的内容。

    public class MainActivity extends AppCompactActivity implements View.OnClickListener
{
private Button button1,button2,button3;
  @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        button1=(Button)findViewById(R.id.button1);
        button2=(Button)findViewById(R.id.button2);
        button3=(Button)findViewById(R.id.button3);
        button1.setOnClickListener(this);
        button2.setOnClickListener(this);
        button3.setOnClickListener(this);
        }
        @Override
        public void onClick(View view)
        {
            switch (view.getId())
            {
                //handle multiple view click events
                case R.id.button1:
                Log.e("Which Button click","Button1 is clicked");
                break;
                case R.id.button2:
                Log.e("Which Button click","Button2 is clicked");
                break;
                case R.id.button3:
                Log.e("Which Button click","Button3 is clicked");
                break;
            }
        }
}

我希望它对你有所帮助。

Answer 3

您可以像这样使用View.OnTouchListener：

mTouchListener = new OnTouchListener() {
public boolean onTouch(View v, MotionEvent ev) {
      int action = ev.getAction();
      switch(v.getId()) {
           case R.id.button1:
              if(action==MotionEvent.ACTION_DOWN) {
                   mButtonOnePressed = true;
              }
              else if(action==MotionEvent.ACTION_UP||action==MotionEvent.ACTION_CANCEL) {
                   mButtonOnePressed = false;
              break;
           ..and so on
      }
      return false;
}
};

并为每个按钮：

mButton1.setOnTouchListener（mTouchListener）;

检查按下了哪个按钮

3 个答案: