倒计时获取验证码 runOnUiThread Timer TimerTask

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package com.example.duanxin;import java.util.Timer;import java.util.TimerTask;import android.app.Activity;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;public class MainActivity extends Activity {private Timer timer;private TimerTask timerTask;private int count =60;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findViewById(R.id.btn).setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {startCount(); }});}    private void startCount(){    timer=new Timer();    timerTask=new TimerTask() {@Overridepublic void run() { runOnUiThread(new Runnable() {public void run() {count--;if (count>0){findViewById(R.id.btn).setEnabled(false);((Button)findViewById(R.id.btn)).setText(count + "s");}else{findViewById(R.id.btn).setEnabled(true);((Button)findViewById(R.id.btn)).setText("重发验证码");timerTask.cancel();count=60;}}});}};timer.schedule(timerTask, 0, 1000);    }}

private String str= "123";
TextView tv;
private Message message;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity);
tv = (TextView) findViewById(R.id.tv);
tv.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View v) {
tv.setEnabled(false);
new Thread(yuanlirunnable).start();
Toast.makeText(BActivity.this, "点击", Toast.LENGTH_LONG).show();

}
});
}

private Handler handler=new Handler(){

@Override
public void handleMessage(Message msg) {
super.handleMessage(msg);
int p=msg.what;
if(p==0){
tv.setEnabled(true);
}
}

};

Runnable yuanlirunnable=new Runnable() {

@Override
public void run() {
message=handler.obtainMessage();

try {
for (int i =10; i >= 0; i--) {
/*
* 在这里控制进度
*/
// int x=++progress;
int randomnumberprogress=(int) (Math.random()*100);
// int x=randomnumberprogress;
int x=i;
message.what=x;
handler.sendEmptyMessage(message.what);
Thread.sleep(100);

}

} catch (InterruptedException e) {
e.printStackTrace();
}

}
};

}

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