Question

嗨，我是网站的新手，但潜伏了一段时间。编程新手。

我的问题是我想按一个按钮，然后该按钮会显示图像一段时间，然后返回其原始状态。到目前为止，我可以将按钮更改/转换为图像，但之后它不会恢复到其按钮。或者我可以让它来回转换但没有图像。

忽略其他按钮，此刻只为Button1尝试。提前谢谢。

继承我的代码：

public class MainActivity extends Activity implements OnClickListener {

    private Button Button1, Button2, Button3, Button4,
                   Button5, Button6, Button7, Button8,
                   Button9, Button10, Button11, Button12;

    private Button ButtonNewGame;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        //Declaring Buttons/Squares
        Button1 = (Button) findViewById(R.id.Button1);
        Button2 = (Button) findViewById(R.id.Button2);
        Button3 = (Button) findViewById(R.id.Button3);
        Button4 = (Button) findViewById(R.id.Button4);
        Button5 = (Button) findViewById(R.id.Button5);
        Button6 = (Button) findViewById(R.id.Button6);
        Button7 = (Button) findViewById(R.id.Button7);
        Button8 = (Button) findViewById(R.id.Button8);
        Button9 = (Button) findViewById(R.id.Button9);
        Button10 = (Button) findViewById(R.id.Button10);
        Button11= (Button) findViewById(R.id.Button11);
        Button12 = (Button) findViewById(R.id.Button12);
        //Declaring NewGame Button
        ButtonNewGame = (Button) findViewById(R.id.ButtonNewGame);

        //Adding OnClickListeners
        Button1.setOnClickListener(this);
        Button2.setOnClickListener(this);
        Button3.setOnClickListener(this);
        Button4.setOnClickListener(this);
        Button5.setOnClickListener(this);
        Button6.setOnClickListener(this);
        Button7.setOnClickListener(this);
        Button8.setOnClickListener(this);
        Button9.setOnClickListener(this);
        Button10.setOnClickListener(this);
        Button11.setOnClickListener(this);
        Button12.setOnClickListener(this);

        ButtonNewGame.setOnClickListener(this);
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.activity_main, menu);
        return true;
    }

    @Override
    public void onClick(View v) {
        // TODO Auto-generated method stub
        //Button1.setBackgroundResource(R.drawable.ic_launcher);
        Animation animation = new AlphaAnimation(1, 0);
        animation.setDuration(1000);
        animation.setInterpolator( new LinearInterpolator());
        animation.setRepeatCount(Animation.ABSOLUTE);
        animation.setRepeatMode(Animation.REVERSE);

        if(v == Button1){
            Button1.startAnimation(animation);
        }
    }
}

Answer 1

尝试StateListDrawable

http://developer.android.com/guide/topics/resources/drawable-resource.html#StateList

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_pressed="true"
          android:drawable="@drawable/a" /> <!-- pressed -->
    <item android:state_focused="true"
          android:drawable="@drawable/b" /> <!-- focused -->
    <item android:state_hovered="true"
          android:drawable="@drawable/c" /> <!-- hovered -->
    <item android:drawable="@drawable/d" /> <!-- default -->
</selector>

Answer 2

这可能有点矫枉过正，但您可以使用在点击Button时启动的内部CountDownTimer。当您更改Button图像时也是如此。然后，在CountDownTimers onFinish()中，您将Button的背景设置为默认值

Answer 3

这是我用过它的作品

<?xml version="1.0" encoding="utf-8"?> 
<selector xmlns:android="http://schemas.android.com/apk/res/android"> 
  <item android:state_focused="true" android:state_pressed="true" 
        android:drawable="@drawable/ok_button_hover" /> 
  <item android:state_focused="false" android:state_pressed="true" 
        android:drawable="@drawable/ok_button_hover" /> 
  <item android:drawable="@drawable/ok_button" /> 
</selector>

如何将按钮背景更改为图像，然后按下时返回默认按钮

3 个答案: