我的gridview种有个进度条和开始及结束两个按钮，我点击开始，我希望他可以一直按照我的赋值更新进度，当我按下结束按钮时他结束掉。这个怎么实现呢？求大师指点迷津！
创建一个服务，这个服务可以读取你的赋值并广播进度，你的界面可以收听这个服务的广播并自己更新进度条。这是通用的做法。
thread + handler
thread负责赋值的变化，然后发消息
handler负责更新进度条
通过btn的点击响应来控制thread的运行
myadapter.java(自定义适配器)
tock_on.setOnClickListener(new View.OnClickListener() {
public void onClick(View arg0) {
if (tock_flag) {
} else {
tock_flag = true;
tock_on.setBackgroundResource(0);
tock_on.setBackgroundResource(R.drawable.tock_on_btn);
tock_off.setBackgroundResource(0);
tock_off.setBackgroundResource(R.drawable.tock_off_btn);
search_voice.setBackgroundResource(0);
search_voice.setBackgroundResource(R.drawable.vocie_press);
//计时器
if (null != timer) {
task.cancel();
task = null;
timer.cancel(); // Cancel timer
timer.purge();
timer = null;
handler.removeMessages(msg.what);
mlCount = 0;
if (SETTING_SECOND_ID == settingTimerUnitFlg) {
// second
tvTime.setText(R.string.init_time_second);
} else if (SETTING_100MILLISECOND_ID == settingTimerUnitFlg) {
// 100 millisecond
tvTime.setText(R.string.init_time_100millisecond);
}
}
task = new TimerTask() {
public void run() {
if (null == msg) {
msg = new Message();
} else {
msg = Message.obtain();
}
msg.what = 1;
handler.sendMessage(msg);
}
};
timer = new Timer(true);
timer.schedule(task, mlTimerUnit, mlTimerUnit); // set timer duration
}
}
});
tock_off.setOnClickListener(new View.OnClickListener() {
public void onClick(View arg0) {
if(tock_flag){//只对说话按钮负责
tock_off.setBackgroundResource(0);
tock_off.setBackgroundResource(R.drawable.tock_off);
tock_on.setBackgroundResource(0);
tock_on.setBackgroundResource(R.drawable.tock_on);
search_voice.setBackgroundResource(0);
search_voice.setBackgroundResource(R.drawable.vocie);
tock_flag = false;
voice_flag = true;
try {
task.cancel();
timer.cancel(); // Cancel timer
timer.purge();
handler.removeMessages(msg.what);
} catch (Exception e) {
e.printStackTrace();
}
}
}
});
final Handler mHandler =new Handler(){
public void handleMessage(Message msg) {
if(msg.what==0x111){
volum.setProgress(volum_value); //更新进度
}else{
volum.setVisibility(View.GONE); //设置进度条不显示，并且不占用空间
}
}
};
new Thread(new Runnable() {
public void run() {
while (true) {
volum_value = doWork(); //获取耗时操作完成的百分比
Message m=new Message();
if(tock_flag){
m.what=0x111;
mHandler.sendMessage(m); //发送信息
}else{
m.what=0x110;
mHandler.sendMessage(m); //发送消息
break;
}
}
}
//模拟一个耗时操作
private byte doWork() {
volum_value+=Math.random()*10; //改变完成进度
try {
Thread.sleep(200); //线程休眠200毫秒
} catch (InterruptedException e) {
e.printStackTrace();
}
return volum_value; //返回新的进度
}
}).start(); //开启一个线程
myadapter.java(自定义适配器)
tock_on.setOnClickListener(new View.OnClickListener() {
public void onClick(View arg0) {
if (tock_flag) {
} else {
tock_flag = true;
tock_on.setBackgroundResource(0);
tock_on.setBackgroundResource(R.drawable.tock_on_btn);
tock_off.setBackgroundResource(0);
tock_off.setBackgroundResource(R.drawable.tock_off_btn);
search_voice.setBackgroundResource(0);
search_voice.setBackgroundResource(R.drawable.vocie_press);
//计时器
if (null != timer) {
task.cancel();
task = null;
timer.cancel(); // Cancel timer
timer.purge();
timer = null;
handler.removeMessages(msg.what);
mlCount = 0;
if (SETTING_SECOND_ID == settingTimerUnitFlg) {
// second
tvTime.setText(R.string.init_time_second);
} else if (SETTING_100MILLISECOND_ID == settingTimerUnitFlg) {
// 100 millisecond
tvTime.setText(R.string.init_time_100millisecond);
}
}
task = new TimerTask() {
public void run() {
if (null == msg) {
msg = new Message();
} else {
msg = Message.obtain();
}
msg.what = 1;
handler.sendMessage(msg);
}
};
timer = new Timer(true);
timer.schedule(task, mlTimerUnit, mlTimerUnit); // set timer duration
}
}
});
tock_off.setOnClickListener(new View.OnClickListener() {
public void onClick(View arg0) {
if(tock_flag){//只对说话按钮负责
tock_off.setBackgroundResource(0);
tock_off.setBackgroundResource(R.drawable.tock_off);
tock_on.setBackgroundResource(0);
tock_on.setBackgroundResource(R.drawable.tock_on);
search_voice.setBackgroundResource(0);
search_voice.setBackgroundResource(R.drawable.vocie);
tock_flag = false;
voice_flag = true;
try {
task.cancel();
timer.cancel(); // Cancel timer
timer.purge();
handler.removeMessages(msg.what);
} catch (Exception e) {
e.printStackTrace();
}
}
}
});
final Handler mHandler =new Handler(){
public void handleMessage(Message msg) {
if(msg.what==0x111){
volum.setProgress(volum_value); //更新进度
}else{
volum.setVisibility(View.GONE); //设置进度条不显示，并且不占用空间
}
}
};
new Thread(new Runnable() {
public void run() {
while (true) {
volum_value = doWork(); //获取耗时操作完成的百分比
Message m=new Message();
if(tock_flag){
m.what=0x111;
mHandler.sendMessage(m); //发送信息
}else{
m.what=0x110;
mHandler.sendMessage(m); //发送消息
break;
}
}
}
//模拟一个耗时操作
private byte doWork() {
volum_value+=Math.random()*10; //改变完成进度
try {
Thread.sleep(200); //线程休眠200毫秒
} catch (InterruptedException e) {
e.printStackTrace();
}
return volum_value; //返回新的进度
}
}).start(); //开启一个线程
06-04 10:34:30.390 424-591/? E/Watchdog﹕ !@Sync 12144
06-04 10:34:34.164 10502-10502/? E/MtpService﹕ In MTPAPP onReceive:android.intent.action.BATTERY_CHANGED
06-04 10:34:34.164 10502-10502/? E/MtpService﹕ battPlugged Type : 2
06-04 10:34:39.159 10502-10502/? E/MtpService﹕ In MTPAPP onReceive:android.intent.action.BATTERY_CHANGED
06-04 10:34:39.169 10502-10502/? E/MtpService﹕ battPlugged Type : 2
06-04 10:34:44.194 10502-10502/? E/MtpService﹕ In MTPAPP onReceive:android.intent.action.BATTERY_CHANGED
06-04 10:34:44.194 10502-10502/? E/MtpService﹕ battPlugged Type : 2
06-04 10:34:44.744 10502-10502/? E/MtpService﹕ In MTPAPP onReceive:android.intent.action.BATTERY_CHANGED
06-04 10:34:44.744 10502-10502/? E/MtpService﹕ battPlugged Type : 2
06-04 10:34:49.779 10502-10502/? E/MtpService﹕ In MTPAPP onReceive:android.intent.action.BATTERY_CHANGED
06-04 10:34:49.779 10502-10502/? E/MtpService﹕ battPlugged Type : 2
06-04 10:34:54.794 10502-10502/? E/MtpService﹕ In MTPAPP onReceive:android.intent.action.BATTERY_CHANGED
06-04 10:34:54.794 10502-10502/? E/MtpService﹕ battPlugged Type : 2
06-04 10:34:59.809 10502-10502/? E/MtpService﹕ In MTPAPP onReceive:android.intent.action.BATTERY_CHANGED
06-04 10:34:59.809 10502-10502/? E/MtpService﹕ battPlugged Type : 2
06-04 10:35:00.389 424-591/? E/Watchdog﹕ !@Sync 12145
06-04 10:35:04.824 10502-10502/? E/MtpService﹕ In MTPAPP onReceive:android.intent.action.BATTERY_CHANGED
06-04 10:35:04.824 10502-10502/? E/MtpService﹕ battPlugged Type : 2
06-04 10:35:09.849 10502-10502/? E/MtpService﹕ In MTPAPP onReceive:android.intent.action.BATTERY_CHANGED
06-04 10:35:09.849 10502-10502/? E/MtpService﹕ battPlugged Type : 2
06-04 10:35:14.834 10502-10502/? E/MtpService﹕ In MTPAPP onReceive:android.intent.action.BATTERY_CHANGED
06-04 10:35:14.834 10502-10502/? E/MtpService﹕ battPlugged Type : 2
06-04 10:35:15.394 10502-10502/? E/MtpService﹕ In MTPAPP onReceive:android.intent.action.BATTERY_CHANGED
06-04 10:35:15.394 10502-10502/? E/MtpService﹕ battPlugged Type : 2
06-04 10:35:20.429 10502-10502/? E/MtpService﹕ In MTPAPP onReceive:android.intent.action.BATTERY_CHANGED
06-04 10:35:20.429 10502-10502/? E/MtpService﹕ battPlugged Type : 2
06-04 10:35:25.434 10502-10502/? E/MtpService﹕ In MTPAPP onReceive:android.intent.action.BATTERY_CHANGED
06-04 10:35:25.434 10502-10502/? E/MtpService﹕ battPlugged Type : 2
06-04 10:35:30.389 424-591/? E/Watchdog﹕ !@Sync 12146
06-04 10:35:30.439 10502-10502/? E/MtpService﹕ In MTPAPP onReceive:android.intent.action.BATTERY_CHANGED
06-04 10:35:30.439 10502-10502/? E/MtpService﹕ battPlugged Type : 2
06-04 10:35:35.444 10502-10502/? E/MtpService﹕ In MTPAPP onReceive:android.intent.action.BATTERY_CHANGED
06-04 10:35:35.444 10502-10502/? E/MtpService﹕ battPlugged Type : 2
06-04 10:35:40.459 10502-10502/? E/MtpService﹕ In MTPAPP onReceive:android.intent.action.BATTERY_CHANGED
06-04 10:35:40.459 10502-10502/? E/MtpService﹕ battPlugged Type : 2
06-04 10:35:45.463 10502-10502/? E/MtpService﹕ In MTPAPP onReceive:android.intent.action.BATTERY_CHANGED
06-04 10:35:45.463 10502-10502/? E/MtpService﹕ battPlugged Type : 2
06-04 10:35:50.478 10502-10502/? E/MtpService﹕ In MTPAPP onReceive:android.intent.action.BATTERY_CHANGED
06-04 10:35:50.478 10502-10502/? E/MtpService﹕ battPlugged Type : 2
06-04 10:35:55.493 10502-10502/? E/MtpService﹕ In MTPAPP onReceive:android.intent.action.BATTERY_CHANGED
06-04 10:35:55.493 10502-10502/? E/MtpService﹕ battPlugged Type : 2
这些算么