我有一个带有countDown的应用程序，它运行Service和一些SharedPreferences。问题是：为什么我的应用程序会占用我这么多高速缓存，高达56mb？
XML
<Button
android:text="Start"
android:layout_width="97dp"
android:layout_height="wrap_content"
tools:layout_editor_absoluteX="24dp"
tools:layout_editor_absoluteY="447dp"
android:id="@+id/btnStart"
app:layout_constraintLeft_toLeftOf="@+id/activity_amplitudination"
android:layout_marginLeft="24dp"
android:layout_marginStart="24dp"
tools:layout_constraintLeft_creator="0"
app:layout_constraintTop_toBottomOf="@+id/progressBar"
android:layout_marginTop="8dp"
tools:layout_constraintTop_creator="0"
app:layout_constraintBottom_toBottomOf="@+id/activity_amplitudination"
android:layout_marginBottom="16dp"
tools:layout_constraintBottom_creator="0"
app:layout_constraintVertical_bias="1.0" />
<Button
android:text="Reset"
android:layout_width="99dp"
android:layout_height="wrap_content"
tools:layout_editor_absoluteX="145dp"
tools:layout_editor_absoluteY="447dp"
android:id="@+id/btnResetProgram"
app:layout_constraintLeft_toRightOf="@+id/btnStart"
android:layout_marginLeft="8dp"
android:layout_marginStart="8dp"
tools:layout_constraintLeft_creator="0"
app:layout_constraintTop_toTopOf="@+id/activity_amplitudination"
android:layout_marginTop="16dp"
tools:layout_constraintTop_creator="0"
app:layout_constraintRight_toLeftOf="@+id/btnFinishAmplitudination"
android:layout_marginRight="8dp"
android:layout_marginEnd="8dp"
tools:layout_constraintRight_creator="0"
app:layout_constraintBottom_toBottomOf="@+id/btnStart"
tools:layout_constraintBottom_creator="0"
app:layout_constraintVertical_bias="1.0" />
<ProgressBar
android:id="@+id/progressBar"
android:layout_width="321dp"
android:layout_height="275dp"
android:indeterminate="false"
android:progressDrawable="@drawable/circular_progress_bar"
android:background="@drawable/circular_progress_bar"
style="?android:attr/progressBarStyleHorizontal"
android:max="100"
android:progress="100"
tools:layout_editor_absoluteX="31dp"
tools:layout_editor_absoluteY="54dp"
app:layout_constraintLeft_toLeftOf="@+id/activity_amplitudination"
android:layout_marginLeft="16dp"
android:layout_marginStart="16dp"
tools:layout_constraintLeft_creator="0"
app:layout_constraintTop_toTopOf="@+id/activity_amplitudination"
android:layout_marginTop="16dp"
tools:layout_constraintTop_creator="0"
app:layout_constraintRight_toRightOf="@+id/activity_amplitudination"
android:layout_marginRight="16dp"
android:layout_marginEnd="16dp"
tools:layout_constraintRight_creator="0"
app:layout_constraintBottom_toBottomOf="@+id/activity_amplitudination"
android:layout_marginBottom="16dp"
tools:layout_constraintBottom_creator="0"
app:layout_constraintVertical_bias="0.19" />
<TextView
android:layout_width="189dp"
android:layout_height="60dp"
tools:layout_editor_absoluteX="108dp"
tools:layout_editor_absoluteY="168dp"
android:id="@+id/textShowTimer"
android:textAppearance="@style/TextAppearance.AppCompat.Display2"
android:text="00:00:00"
app:layout_constraintLeft_toLeftOf="@+id/activity_amplitudination"
android:layout_marginLeft="16dp"
android:layout_marginStart="16dp"
tools:layout_constraintLeft_creator="0"
app:layout_constraintTop_toTopOf="@+id/activity_amplitudination"
android:layout_marginTop="16dp"
tools:layout_constraintTop_creator="0"
app:layout_constraintRight_toRightOf="@+id/activity_amplitudination"
android:layout_marginRight="16dp"
android:layout_marginEnd="16dp"
tools:layout_constraintRight_creator="0"
app:layout_constraintBottom_toBottomOf="@+id/progressBar"
tools:layout_constraintBottom_creator="0"
app:layout_constraintHorizontal_bias="0.57"
app:layout_constraintVertical_bias="0.6" />
<CheckBox
android:text="13hours"
android:layout_width="103dp"
android:layout_height="34dp"
tools:layout_editor_absoluteX="265dp"
tools:layout_editor_absoluteY="339dp"
android:id="@+id/chkBox13"
app:layout_constraintLeft_toLeftOf="@+id/activity_amplitudination"
android:layout_marginLeft="16dp"
android:layout_marginStart="16dp"
tools:layout_constraintLeft_creator="0"
app:layout_constraintTop_toBottomOf="@+id/progressBar"
android:layout_marginTop="8dp"
tools:layout_constraintTop_creator="0"
app:layout_constraintRight_toRightOf="@+id/activity_amplitudination"
android:layout_marginRight="16dp"
android:layout_marginEnd="16dp"
tools:layout_constraintRight_creator="0"
app:layout_constraintBottom_toTopOf="@+id/chkBox15"
android:layout_marginBottom="8dp"
tools:layout_constraintBottom_creator="0"
app:layout_constraintHorizontal_bias="1.0"
app:layout_constraintVertical_bias="0.58000004" />
<CheckBox
android:text="15hours"
android:layout_width="103dp"
android:layout_height="32dp"
tools:layout_editor_absoluteX="265dp"
tools:layout_editor_absoluteY="383dp"
android:id="@+id/chkBox15"
app:layout_constraintLeft_toLeftOf="@+id/activity_amplitudination"
android:layout_marginLeft="16dp"
android:layout_marginStart="16dp"
tools:layout_constraintLeft_creator="0"
app:layout_constraintRight_toRightOf="@+id/activity_amplitudination"
android:layout_marginRight="16dp"
android:layout_marginEnd="16dp"
tools:layout_constraintRight_creator="0"
app:layout_constraintBottom_toBottomOf="@+id/activity_amplitudination"
android:layout_marginBottom="96dp"
tools:layout_constraintBottom_creator="0"
app:layout_constraintHorizontal_bias="1.0" />
<TextView
android:layout_width="123dp"
android:layout_height="38dp"
tools:layout_editor_absoluteX="245dp"
tools:layout_editor_absoluteY="5dp"
android:id="@+id/txtViewLoyaltyPointsAmplitudination"
app:layout_constraintLeft_toLeftOf="@+id/activity_amplitudination"
android:layout_marginLeft="16dp"
android:layout_marginStart="16dp"
tools:layout_constraintLeft_creator="0"
app:layout_constraintTop_toTopOf="@+id/activity_amplitudination"
android:layout_marginTop="16dp"
tools:layout_constraintTop_creator="0"
app:layout_constraintRight_toRightOf="@+id/activity_amplitudination"
android:layout_marginRight="16dp"
android:layout_marginEnd="16dp"
tools:layout_constraintRight_creator="0"
app:layout_constraintBottom_toTopOf="@+id/progressBar"
android:layout_marginBottom="24dp"
tools:layout_constraintBottom_creator="0"
app:layout_constraintHorizontal_bias="1.0"
app:layout_constraintVertical_bias="0.47000003" />
<Button
android:text="Finish"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
tools:layout_editor_absoluteX="268dp"
tools:layout_editor_absoluteY="447dp"
android:id="@+id/btnFinishAmplitudination"
app:layout_constraintLeft_toLeftOf="@+id/chkBox15"
tools:layout_constraintLeft_creator="0"
app:layout_constraintTop_toBottomOf="@+id/progressBar"
android:layout_marginTop="8dp"
tools:layout_constraintTop_creator="0"
app:layout_constraintRight_toRightOf="@+id/activity_amplitudination"
android:layout_marginRight="16dp"
android:layout_marginEnd="16dp"
tools:layout_constraintRight_creator="0"
app:layout_constraintBottom_toBottomOf="@+id/activity_amplitudination"
android:layout_marginBottom="16dp"
tools:layout_constraintBottom_creator="0"
app:layout_constraintHorizontal_bias="0.22"
app:layout_constraintVertical_bias="1.0" />
主要类
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_amplitudination);
receiver = new TimerStatusReceiver();
}
@Override
protected void onPause() {
super.onPause();
LocalBroadcastManager.getInstance(this).unregisterReceiver(receiver);
}
@Override
protected void onResume() {
super.onResume();
mProgressBar.setProgress(100);
txtShowTimer.setText("00:00:00");
LocalBroadcastManager.getInstance(this).registerReceiver(receiver, new IntentFilter(CountdownTimerService.TIME_INFO));
}
public void startService(View view) {
Intent intent = new Intent(this, CountdownTimerService.class);
//intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startService(intent);
}
public void stopService(View view) {
Intent intent = new Intent(this, CountdownTimerService.class);
//intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK);
stopService(intent);
}
private class TimerStatusReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
if (intent != null && intent.getAction().equals(CountdownTimerService.TIME_INFO)) {
if (intent.hasExtra("VALUE")) {
txtShowTimer.setText(intent.getStringExtra("VALUE"));
long millisInHour = intent.getLongExtra("LONG",0);
long secondsInHour = millisInHour/1000;
int progress = (int) (secondsInHour);
mProgressBar.setProgress(progress);
if (secondsInHour == 0) {
mProgressBar.setProgress(100);
}
}
}
}
}
服务类
public class CountdownTimerService extends Service {
private CounterClass timer;
@Override
public void onCreate() {
super.onCreate();
preferences=getSharedPreferences("program",Context.MODE_PRIVATE);
}
@Nullable
@Override
public IBinder onBind(Intent intent) {
return null;
}
公共类CounterClass扩展了CountDownTimer {
public CounterClass(long millisInFuture, long countDownInterval) {
super(millisInFuture, countDownInterval);
}
@Override
public void onTick(long millisUntilFinished) {
millis = millisUntilFinished;
hms = String.format("%02d:%02d:%02d", TimeUnit.MILLISECONDS.toHours(millis),
TimeUnit.MILLISECONDS.toMinutes(millis) - TimeUnit.HOURS.toMinutes(TimeUnit.MILLISECONDS.toHours(millis)),
TimeUnit.MILLISECONDS.toSeconds(millis) - TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes(millis)));
Intent timerInfoIntent = new Intent(TIME_INFO);
timerInfoIntent.putExtra("VALUE", hms);
timerInfoIntent.putExtra("LONG", millis);
LocalBroadcastManager.getInstance(CountdownTimerService.this).sendBroadcast(timerInfoIntent);
setNotification();
}
@Override
public void onFinish() {
Intent timerInfoIntent = new Intent(TIME_INFO);
timerInfoIntent.putExtra("VALUE", "00:00:00");
LocalBroadcastManager.getInstance(CountdownTimerService.this).sendBroadcast(timerInfoIntent);
stopForeground(true);
if (millis > 1000 && millis < 3000) {
showLoyaltyPoints();
}
int storedPreference = preferences.getInt("intMillisDrived", 0);
amplitudinationProgramFinished(storedPreference);
}
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
timer = new CounterClass(10000, 1000);
timer.start();
return super.onStartCommand(intent, flags, startId);
}
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