android - 在 ImageView 上查找图像 单击

Question

我有一个带有按钮的 Activity ，其图像不断变化。现在单击当时带有特定图像的按钮应该会给出适当的 toast 。我正在使用 timerTask 来更改按钮图像。单击按钮中显示的不同图像时如何获得不同的响应(这里我的按钮是 ImageView )。

我的代码如下

Activity

     public class MainActivity extends Activity {
     public  ImageView ib;
     int[] images=  {R.drawable.alarm,R.drawable.ic_launcher,R.drawable.music_player,R.drawable.onetouchpanel,R.drawable.recorder};


    @Override
      public void onCreate(Bundle savedInstanceState)
{
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    ib=(ImageView) findViewById(R.id.imageButton1);
    int delay = 0; // delay for 0 sec.
    int period = 2000; // repeat every 2 seconds.
    Timer timer = new Timer();
    MyTimerTask myTask = new MyTimerTask();
    timer.schedule(myTask, delay,period);
    ib.setDrawingCacheEnabled(true);
    //ib.measure(Me, heightMeasureSpec)

    ib.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {
        Log.d("ayaz","button clicked");

        }
    });
}
class MyTimerTask extends TimerTask {
    int i=0;
  public void run() {
      runOnUiThread( new Runnable() {
        public void run() {
             // ERROR
             ib.setImageResource(images[i]);
             i++;
             if(i>images.length-1)
             {
                 i=0;
             }

        }
    });

  }
}

Answer 1

将变量“i”从run() 移到MainActivity 类中。

同时向类中添加一个Button“names”数组:

private int i;
private final static String[] names = {"alarm", "launcher", "player", "onetouchpanel", "recorder"};

按如下方式修改您的代码以在 Button.onClick() 函数中显示一个 Toast:

ib.setOnClickListener(new OnClickListener() {
    @Override
    public void onClick(View v) {
        final String name = names[i];
        Log.d("ayaz","button clicked: #" + i + ". " + name);
        Toast.makeText(MainActivity.this, "ayaz: button clicked: #" + i + ". " + name,
                Toast.LENGTH_LONG).show();
    }
});