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Don't stutter animations during Bluetooth broadcasts.

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Bug: 3163109
Change-Id: I89ba3da4ee1f0999f3c7113f2f5fdce6fdafebd7
This commit is contained in:
Brad Fitzpatrick
2010-11-03 15:53:47 -07:00
parent 38f8a1d0fa
commit 66dc706570
1 changed files with 37 additions and 13 deletions
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44
src/com/android/settings/bluetooth/BluetoothEventRedirector.java
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@@ -32,8 +32,13 @@ import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.SharedPreferences;
import android.os.Handler;
import android.util.Log;
import java.util.concurrent.LinkedBlockingQueue;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;
/**
* BluetoothEventRedirector receives broadcasts and callbacks from the Bluetooth
* API and dispatches the event on the UI thread to the right class in the
@@ -42,9 +47,14 @@ import android.util.Log;
public class BluetoothEventRedirector {
private static final String TAG = "BluetoothEventRedirector";
private LocalBluetoothManager mManager;
private final LocalBluetoothManager mManager;
private BroadcastReceiver mBroadcastReceiver = new BroadcastReceiver() {
private final ThreadPoolExecutor mSerialExecutor = new ThreadPoolExecutor(
0, 1, 1000L, TimeUnit.MILLISECONDS, new LinkedBlockingQueue<Runnable>());
private final Handler mHandler = new Handler();
private final BroadcastReceiver mBroadcastReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
Log.v(TAG, "Received " + intent.getAction());
@@ -57,13 +67,11 @@ public class BluetoothEventRedirector {
BluetoothAdapter.ERROR);
mManager.setBluetoothStateInt(state);
} else if (action.equals(BluetoothAdapter.ACTION_DISCOVERY_STARTED)) {
persistDiscoveringTimestamp();
mManager.onScanningStateChanged(true);
PendingResult pr = goAsync(); // so loading shared prefs doesn't kill animation
persistDiscoveringTimestamp(pr, true);
} else if (action.equals(BluetoothAdapter.ACTION_DISCOVERY_FINISHED)) {
persistDiscoveringTimestamp();
mManager.onScanningStateChanged(false);
PendingResult pr = goAsync(); // so loading shared prefs doesn't kill animation
persistDiscoveringTimestamp(pr, false);
} else if (action.equals(BluetoothDevice.ACTION_FOUND)) {
short rssi = intent.getShortExtra(BluetoothDevice.EXTRA_RSSI, Short.MIN_VALUE);
BluetoothClass btClass = intent.getParcelableExtra(BluetoothDevice.EXTRA_CLASS);
@@ -222,10 +230,26 @@ public class BluetoothEventRedirector {
return null;
}
private void persistDiscoveringTimestamp() {
private void persistDiscoveringTimestamp(
final BroadcastReceiver.PendingResult pr, final boolean newState) {
// Load the shared preferences and edit it on a background
// thread (but serialized!), but then post back to the main
// thread to run the onScanningStateChanged callbacks which
// update the UI...
mSerialExecutor.submit(new Runnable() {
public void run() {
SharedPreferences.Editor editor = mManager.getSharedPreferences().edit();
editor.putLong(LocalBluetoothManager.SHARED_PREFERENCES_KEY_DISCOVERING_TIMESTAMP,
editor.putLong(
LocalBluetoothManager.SHARED_PREFERENCES_KEY_DISCOVERING_TIMESTAMP,
System.currentTimeMillis());
editor.apply();
mHandler.post(new Runnable() {
public void run() {
mManager.onScanningStateChanged(newState);
pr.finish();
}
});
}
});
}
}