修改Android系統關機動畫，android關機動畫

修改Android系統關機動畫，android關機動畫

檔案路徑：frameworks\base\services\core\java\com\android\server\power\ShutdownThread.java

在beginShutdownSequence()方法中：

 1 private static void beginShutdownSequence(Context context) { 2     ...... 3     // throw up an indeterminate system dialog to indicate radio is 4     // shutting down. 5     //***********************  系統預設的Dialog   *********************** 6     /*ProgressDialog pd = new ProgressDialog(context); 7     pd.setTitle(context.getText(com.android.internal.R.string.power_off)); 8     pd.setMessage(context.getText(com.android.internal.R.string.shutdown_progress)); 9     pd.setIndeterminate(true);10     pd.setCancelable(false);11     pd.getWindow().setType(WindowManager.LayoutParams.TYPE_KEYGUARD_DIALOG);12     pd.show();*/13     //***********************  替換為自訂的全屏Dialog   ***********************14     Point outSize = new Point();15     Dialog dialog = new Dialog(context, android.R.style.Theme_Black_NoTitleBar_Fullscreen);16     IndeterminateProgressBar view = new IndeterminateProgressBar(context);17     dialog.getWindow().setType(WindowManager.LayoutParams.TYPE_KEYGUARD_DIALOG);18     dialog.getWindow().getWindowManager().getDefaultDisplay().getSize(outSize);  //擷取螢幕寬高19     dialog.setContentView(view, new LayoutParams(outSize.x, outSize.y));         //設定自訂view寬高為全屏20     dialog.show();21     22     ......23 }

 注意：必須要設定 dialog.getWindow().setType(WindowManager.LayoutParams.TYPE_KEYGUARD_DIALOG); 之前忘了加導致什麼都不顯示 替換的自訂View： 

  1 class IndeterminateProgressBar extends View {  2     static final String TAG = "ProgressBar";  3     private int delayMillis = 30;  4     private Handler mHandler;  5     private ArrayList<Entity> entities;  6     private int width = 0;  7     // private int height = 0;  8     private int r = 15;  9     private int shift = 20; 10     private int radius = 3; 11     private int color = Color.WHITE; 12     private long time = 0; 13     private boolean started = false; 14     public IndeterminateProgressBar(Context context) { 15         super(context); 16         init(); 17     } 18     @Override 19     protected void onLayout(boolean changed, int left, int top, int right, 20             int bottom) { 21         super.onLayout(changed, left, top, right, bottom); 22         width = getLayoutParams().width / 2; 23         // height = getLayoutParams().height; 24         if (width > 0) { 25             radius = width / 20; 26             r = 2 * width / 5; 27             //shift = width / 2; 28             shift = width / 1; 29         } 30     } 31     private void init() { 32         setBackgroundResource(android.R.color.transparent); 33         mHandler = new Handler(new Handler.Callback() { 34             @Override 35             public boolean handleMessage(Message msg) { 36                 for (Entity e : entities) { 37                     e.update(); 38                 } 39                 invalidate(); 40                 mHandler.sendEmptyMessageDelayed(0, delayMillis); 41                 time += delayMillis; 42                 return false; 43             } 44         }); 45     } 46     public void setColor(int color) { 47         this.color = color; 48     } 49     public void stop() { 50         mHandler.removeMessages(0); 51         started = false; 52         invalidate(); 53     } 54     public boolean isStart() { 55         return started; 56     } 57     public void start() { 58         if (started) 59             return; 60         started = true; 61         time = 0; 62         entities = new ArrayList<IndeterminateProgressBar.Entity>(); 63         float s = .25f; 64         entities.add(new Entity(0, color, 0)); 65         entities.add(new Entity(1 * s, color, delayMillis * 4)); 66         entities.add(new Entity(2 * s, color, delayMillis * 8)); 67         entities.add(new Entity(3 * s, color, delayMillis * 12)); 68         entities.add(new Entity(4 * s, color, delayMillis * 16)); 69         // entities.add(new Entity(5 * s, color, delayMillis * 20)); 70             if (mHandler != null) 71                 mHandler.sendEmptyMessage(0); 72         } 73         @Override 74         protected void onDraw(Canvas canvas) { 75             if (entities != null && entities.size() > 0) { 76                 for (Entity e : entities) { 77                     e.draw(canvas); 78                 } 79             } 80             super.onDraw(canvas); 81         } 82         class Entity { 83             private float x; 84             private float y; 85             private int color; 86             private Paint paint; 87             private double sp = 0; 88             private long delay; 89             private int sec = 0; 90             private float pec = 0; 91             boolean visiable = true; 92             public float getInterpolation(float input) { 93                 return (float) (Math.cos((input + 1) * Math.PI) / 2.0f) + 0.5f; 94             } 95             public Entity(float sp, int color, int delay) { 96                 paint = new Paint(); 97                 paint.setAntiAlias(true); 98                 paint.setStyle(Paint.Style.FILL); 99                 this.color = color;100                 this.sp = sp;101                 this.delay = delay;102                 paint.setColor(this.color);103             }104             public void update() {105                 if (time < delay)106                     return;107                 visiable = true;108                 pec += 0.03;109                 if (pec > 1) {110                     pec = 0;111                     sec = ++sec == 3 ? 0 : sec;112                     delay = sec == 0 ? time + delayMillis * 22 : time + delayMillis113                             * 3;114                     visiable = sec == 0 ? false : true;115                 }116                 double θ = Math.PI117                         * .5118                         + (sec == 0 ? 0 : sec * Math.PI / sec)119                         - (sec == 0 ? 0 : sp)120                         + (Math.PI * (sec == 1 ? 2 : 1) - (sec == 0 ? sp : 0) + (sec == 2 ? sp121                                 : 0)) * getInterpolation(pec);122                 x = (float) (r / 2 * Math.cos(θ)) + shift / 2;123                 y = (float) (r / 2 * Math.sin(θ)) + shift / 2;124             }125             public void draw(Canvas canvas) {126                 if (!visiable || x == 0 || y == 0)127                     return;128                 canvas.save();129                 canvas.translate(x, y);130                 canvas.drawCircle(x, y, radius, paint);131                 canvas.restore();132             }133         }134         @Override135         protected void onAttachedToWindow() {136             super.onAttachedToWindow();137             if (getVisibility() == View.VISIBLE) {138                 start();139             }140         }141         @Override142         protected void onDetachedFromWindow() {143             super.onDetachedFromWindow();144             stop();145         }146         public void setDelayMillis(int delayMillis) {147             this.delayMillis = delayMillis;148         }149 }

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