Android的TextView的双击事件监听

TextView是没有双击事件的监听设置的，故我们这里使用的是setOnTouchListener来作为双击监听。

监听的类需要实现OnTouchListener类，并重写OnTouch方法

下面是实例：

public class HosIntroActivity extends MyActivity implements OnTouchListener {private static long size = 12; //字体大小private int count = 0;private int firClick = 0;private int secClick = 0;private int flage = 0;private TextView infor;public void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.info_introduction);infor = (TextView) findViewById(R.id.text_infor);

try {

infor.setText(Reader.readText(this));} catch (Exception e) {Toast.makeText(this, "读取文件失败", Toast.LENGTH_LONG).show();e.printStackTrace();}// float zoomScale = 0.5f;// 缩放比例// new ZoomTextView(infor, zoomScale);infor.setOnTouchListener(this);}

public boolean onTouch(View v, MotionEvent event) {if (MotionEvent.ACTION_DOWN == event.getAction()) {count++;if (count == 1) {firClick = (int) System.currentTimeMillis();} else if (count == 2) {secClick = (int) System.currentTimeMillis();switch (flage) {case 0:if (secClick - firClick < 1000) {// 双击事件size = size + 5;infor.setTextSize(size);flage++;}count = 0;firClick = 0;secClick = 0;return true;case 1:if (secClick - firClick < 1000) {// 双击事件size = size - 5;infor.setTextSize(size);flage--;}count = 0;firClick = 0;secClick = 0;return true;default:return true;}}}return true;}}

参考： http://abc20899.iteye.com/blog/1068432

参考中其实给出了两种方式

public class MainActivity extends Activity{ //implements OnGestureListener{   private Button button;            @Override    public void onCreate(Bundle savedInstanceState) {       super.onCreate(savedInstanceState);       setContentView(R.layout.main);              button = (Button)findViewById(R.id.btn_hello);     button.setOnTouchListener(new onDoubleClick());   }     class onDoubleClick implements View.OnTouchListener{   int count = 0; int firClick = 0; int secClick = 0;     @Override      public boolean onTouch(View v, MotionEvent event) {           if(MotionEvent.ACTION_DOWN == event.getAction()){               count++;               if(count == 1){                   firClick = (int) System.currentTimeMillis();                                  } else if (count == 2){                   secClick = (int) System.currentTimeMillis();                   if(secClick - firClick < 1000){                          //双击事件                 button.setText("wff");                 }                   count = 0;                   firClick = 0;                   secClick = 0;               }           }           return true;       }   } }

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