android.view.Choreographer#getInstance ( )源码实例Demo

public DisplayPowerState(DisplayBlanker blanker, ColorFade colorFade) {
    mHandler = new Handler(true /*async*/);
    mChoreographer = Choreographer.getInstance();
    mBlanker = blanker;
    mColorFade = colorFade;
    mPhotonicModulator = new PhotonicModulator();
    mPhotonicModulator.start();

    // At boot time, we know that the screen is on and the electron beam
    // animation is not playing.  We don't know the screen's brightness though,
    // so prepare to set it to a known state when the state is next applied.
    // Although we set the brightness to full on here, the display power controller
    // will reset the brightness to a new level immediately before the changes
    // actually have a chance to be applied.
    mScreenState = Display.STATE_ON;
    mScreenBrightness = PowerManager.BRIGHTNESS_ON;
    scheduleScreenUpdate();

    mColorFadePrepared = false;
    mColorFadeLevel = 1.0f;
    mColorFadeReady = true;
}
 

@Override
    public void onCreate() {
        super.onCreate();
        mContext = this;
        Tips.init(this);
        DataCenter.init(this, "zhuanlan.db");

//        StrictMode.setThreadPolicy(new StrictMode.ThreadPolicy.Builder()
//        .detectDiskReads()
//        .detectDiskWrites()
//        .detectNetwork()
//        .penaltyLog()
//        .build());
//
//        StrictMode.setVmPolicy(new StrictMode.VmPolicy.Builder()
//        .detectActivityLeaks()
//        .detectLeakedSqlLiteObjects()
//        .penaltyLog()
//        .penaltyDeath()
//        .build());

        initStetho();

        Choreographer choreographer = Choreographer.getInstance();
        choreographer.postFrameCallback(FRAME_CALLBACK);
    }
 

protected void redraw() {
    log("redraw()");
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
        // stay in sync with display updates
        Choreographer choreographer = Choreographer.getInstance();
        choreographer.removeFrameCallback(redrawCallback);
        choreographer.postFrameCallback(redrawCallback);

    } else {
        redrawInternal();
    }
}
 

@Override
@TargetApi(Build.VERSION_CODES.JELLY_BEAN)
public void onTaskInit() {
    this.mFpsChecker = new FPSSampler(Choreographer.getInstance());
    mFpsChecker.reset();
    mFpsChecker.start();
}
 

private void createChoreographerInstanceInternal() {
  choreographer = Choreographer.getInstance();
}
 

public RampAnimator(T object, IntProperty<T> property) {
    mObject = object;
    mProperty = property;
    mChoreographer = Choreographer.getInstance();
}
 

private void createChoreographerInstanceInternal() {
  choreographer = Choreographer.getInstance();
}
 

public Metronome() {
  choreographer = Choreographer.getInstance();
}
 

private void createChoreographerInstanceInternal() {
  choreographer = Choreographer.getInstance();
}
 

@TargetApi(Build.VERSION_CODES.JELLY_BEAN)
private Choreographer getChoreographer() {
  return Choreographer.getInstance();
}
 

public FpsDataModule(int interval) {
    this.interval = interval;
    this.choreographer = Choreographer.getInstance();
}
 

@TargetApi(Build.VERSION_CODES.JELLY_BEAN)
private Choreographer getChoreographer() {
  return Choreographer.getInstance();
}
 

public WallpaperOffsetInterpolator() {
    mChoreographer = Choreographer.getInstance();
    mInterpolator = new DecelerateInterpolator(1.5f);
}
 

/**
 * @return an Android spring choreographer using the system {@link android.view.Choreographer}
 */
public static ChoreographerAndroidSpringLooper create() {
  return new ChoreographerAndroidSpringLooper(Choreographer.getInstance());
}
 

public MouseCursor(GameActivity activity, Osc osc) {
    this.osc = osc;

    Resources r = activity.getResources();

    int height = (int)TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 30, r.getDisplayMetrics());
    int width = (int) Math.round(height / 1.5);

    cursor = new FixedSizeImageView(activity, width, height);
    cursor.setImageResource(R.drawable.pointer_arrow);

    cursor.setLayoutParams(new RelativeLayout.LayoutParams(width, height));

    layout = activity.getLayout();
    layout.addView(cursor);

    choreographer = Choreographer.getInstance();
    choreographer.postFrameCallback(this);
}
 

@TargetApi(Build.VERSION_CODES.JELLY_BEAN)
private Choreographer getChoreographer() {
  return Choreographer.getInstance();
}
 

@Override
public Choreographer getChoreographer() {
    return Choreographer.getInstance();
}
 

/**
 * @return an Android spring choreographer using the system {@link Choreographer}
 */
public static ChoreographerAndroidSpringLooper create() {
  return new ChoreographerAndroidSpringLooper(Choreographer.getInstance());
}
 

public Metronome() {
  choreographer = Choreographer.getInstance();
}
 

private void createChoreographerInstanceInternal() {
  choreographer = Choreographer.getInstance();
}