问题描述
我需要创建一个计时器，当计时器变为0时，应用应关闭。计时器可以正常工作，但是只要活动重新启动，负责显示用户当前倒计时时间的editext就会设置为空。 我举杯祝酒，以检查上述口味的功能是否正常运行，并且工作正常。
我不知道更新editext会有什么问题。
TimerActivity
public class TimerActivity extends AppCompatActivity {
public static final int RESULT_CODE = 11;
Handler h = new Handler();
public EditText t,t2;
Button start;
String time;
int time_sec = 0;
private Handler mHandler = new Handler();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_timer);
t = findViewById(R.id.editText);
t2 = findViewById(R.id.editText2);
start = findViewById(R.id.timer_btn);
start.setonClickListener(new View.OnClickListener() {
public void onClick(View v) {
time = t2.getText().toString().trim();
if (Integer.parseInt(time) <= 180 && Integer.parseInt(time) > 0 )
{
time_sec = Integer.parseInt(time) * 60;
startMyService(v);
}
else{
Toast.makeText(getBaseContext(),"Maximum time limit is 180 mins.",Toast.LENGTH_SHORT).show();
}
}
});
}
public void startMyService(View v)
{
Intent ii = new Intent(this,MyIntentService.class);
ResultReceiver r = new myreciever(null);
ii.putExtra("counter",2);
ii.putExtra("receiver",r);
ii.putExtra("time",String.valueOf(time_sec) );
startService(ii);
}
public void stopMyService(View v)
{
}
public class myreciever extends ResultReceiver
{
/**
* Create a new ResultReceive to receive results. Your
* {@link #onReceiveResult} method will be called from the thread running
* <var>handler</var> if given,or from an arbitrary thread if null.
*
* @param handler
*/
public myreciever(Handler handler) {
super(handler);
}
@Override
protected void onReceiveResult(int resultCode,Bundle resultData) {
if (resultCode == RESULT_CODE)
{
if (resultData != null )
{
final String msg = resultData.getString("result");
h.post(new Runnable() {
public void run() {
if (Integer.parseInt(msg) > 0)
{
int seconds = Integer.parseInt(msg);
int numberOfMinutes = ((seconds % 86400 ) % 3600 ) / 60;
int numberOfSeconds = ((seconds % 86400 ) % 3600 ) % 60;
t.setText(String.valueOf(numberOfMinutes) + " : " + String.valueOf(numberOfSeconds););
Toast.makeText(getBaseContext(),"Running",Toast.LENGTH_SHORT).show();
}
else
{
Toast.makeText(getBaseContext(),"Stop",Toast.LENGTH_SHORT).show();
stopService(new Intent( getBaseContext(),OnClearFromrecentService.class));
moveTaskToBack(true);
android.os.Process.killProcess(android.os.Process.myPid());
System.exit(1);
}
}
});
}
}
}
}
}
MyIntentService
public class MyIntentService extends IntentService {
private static final String TAG = "MyIntentService";
int cstart = 0;
int time = 0;
public MyIntentService() {
super("Service Demo");
}
protected void onHandleIntent( Intent intent) {
ResultReceiver rr = intent.getParcelableExtra("receiver");
time = Integer.parseInt(intent.getStringExtra("time"));
Bundle b = new Bundle();
b.putString("result",String.valueOf(time) );
rr.send(TimerActivity.RESULT_CODE,b );
// TimerActivity obj = new TimerActivity();
while (time >= 0 )
{
// obj.t2.setText(String.valueOf(time));
Log.v(TAG,"counter Now is : " + time);
try{
Thread.sleep(1000);
}catch (InterruptedException e)
{
e.printstacktrace();
}
b.putString("result",String.valueOf(time) );
rr.send(TimerActivity.RESULT_CODE,b );
time-- ;
}
}
}
解决方法
暂无找到可以解决该程序问题的有效方法，小编努力寻找整理中！
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