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[java] view
plaincopyprint?计计iphone开发项目源码
public Handler() {
if (FIND_POTENTIAL_LEAKS) {
final Class<? extends Handler> klass = getClass();
if ((klass.isAnonymousClass() || klass.isMemberClass() || klass.isLocalClass()) &&
(klass.getModifiers() & Modifier.STATIC) == 0) {
Log.w(TAG, "The following Handler class should be static or leaks might occur: " +
klass.getCanonicalName());
}
}
mLooper = Looper.myLooper();
if (mLooper == null) {
throw new RuntimeException(
"Can't create handler inside thread that has not called Looper.prepare()");
}
mQueue = mLooper.mQueue;
mCallback = null;
}
public Handler(Looper looper) {
mLooper = looper;
mQueue = looper.mQueue;
mCallback = null;
}
public Handler() {
if (FIND_POTENTIAL_LEAKS) {
final Class<? extends Handler> klass = getClass();
if ((klass.isAnonymousClass() || klass.isMemberClass() || klass.isLocalClass()) &&
(klass.getModifiers() & Modifier.STATIC) == 0) {
Log.w(TAG, "The following Handler class should be static or leaks might occur: " +
klass.getCanonicalName());
}
}
mLooper = Looper.myLooper();
if (mLooper == null) {
throw new RuntimeException(
"Can't create handler inside thread that has not called Looper.prepare()");
}
mQueue = mLooper.mQueue;
mCallback = null;
}
public Handler(Looper looper) {
mLooper = looper;
mQueue = looper.mQueue;
mCallback = null;
}
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[java] view
plaincopyprint?
public class clockActivity extends Activity {
/** Called when the activity is first created. */
private String TAG="clockActivity";
private Button endButton;
private TextView textView;
private int timer=0;
private boolean isRunning=true;
private Handler handler;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
endButton=(Button)findViewById(R.id.endBtn);
textView=(TextView)findViewById(R.id.textview);
endButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
isRunning=false;
}
});
HandlerThread thread=new HandlerThread("myThread");
handler=new Handler(thread.getLooper());//ä¸HandlerThreadä¸çLooperå¯¹è±¡å ³è
thread.start();
Runnable r=new Runnable(){
@Override
public void run() {
// TODO Auto-generated method stub
if(isRunning){
textView.setText("èµ°äº"+timer+"ç§");
timer++;
handler.postDelayed(this, );//æ交任å¡rï¼å»¶æ¶1ç§æ§è¡
}
}
};
handler.postDelayed(r, );
}
}
ããpublic class clockActivity extends Activity {
/** Called when the activity is first created. */
private String TAG="clockActivity";
private Button endButton;
private TextView textView;
private int timer=0;
private boolean isRunning=true;
private Handler handler;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
endButton=(Button)findViewById(R.id.endBtn);
textView=(TextView)findViewById(R.id.textview);
endButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
isRunning=false;
}
});
HandlerThread thread=new HandlerThread("myThread");
handler=new Handler(thread.getLooper());//ä¸HandlerThreadä¸çLooperå¯¹è±¡å ³è
thread.start();
Runnable r=new Runnable(){
@Override
public void run() {
// TODO Auto-generated method stub
if(isRunning){
textView.setText("èµ°äº"+timer+"ç§");
timer++;
handler.postDelayed(this, );//æ交任å¡rï¼å»¶æ¶1ç§æ§è¡
}
}
};
handler.postDelayed(r, );
}
}
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