在Android 系统移植做自己的移动设备,肯定会遇到更改开机或者关机画面,配置自己产品logo 这点是必须的,这些都要在源码中修改,然后编译,下面给大家介绍个关机动画修改,一个简单示例!
文件路径:frameworksaseservicescorejavacomandroidserverpowerShutdownThread.java在beginShutdownSequence()方法中:
private static void beginShutdownSequence(Context context) {...... 3 // throw up an indeterminate system dialog to indicate radio is// shutting down.//*********************** 系统默认的Dialog***********************/*ProgressDialog pd = new ProgressDialog(context);pd.setTitle(context.getText(com.android.internal.R.string.power_off));pd.setMessage(context.getText(com.android.internal.R.string.shutdown_progress));pd.setIndeterminate(true);pd.setCancelable(false);pd.getWindow().setType(WindowManager.LayoutParams.TYPE_KEYGUARD_DIALOG);pd.show();*///*********************** 替换为自定义的全屏Dialog***********************Point outSize = new Point();Dialog dialog = new Dialog(context, android.R.style.Theme_Black_NoTitleBar_Fullscreen);IndeterminateProgressBar view = new IndeterminateProgressBar(context);dialog.getWindow().setType(WindowManager.LayoutParams.TYPE_KEYGUARD_DIALOG);dialog.getWindow().getWindowManager().getDefaultDisplay().getSize(outSize); //获取屏幕宽高dialog.setContentView(view, new LayoutParams(outSize.x, outSize.y)); //设置自定义view宽高为全屏dialog.show();......}
注意:必须要设置 dialog.getWindow().setType(WindowManager.LayoutParams.TYPE_KEYGUARD_DIALOG); 之前忘了加导致什么都不显示
替换的自定义View:class IndeterminateProgressBar extends View {static final String TAG = "ProgressBar";private int delayMillis = 30;private Handler mHandler;private ArrayList<Entity> entities;private int width = 0;// private int height = 0;private int r = 15;private int shift = 20;private int radius = 3;private int color = Color.WHITE;private long time = 0;private boolean started = false;public IndeterminateProgressBar(Context context) {super(context);init();}@Overrideprotected void onLayout(boolean changed, int left, int top, int right,int bottom) {super.onLayout(changed, left, top, right, bottom);width = getLayoutParams().width / 2;// height = getLayoutParams().height;if (width > 0) {radius = width / 20;r = 2 * width / 5;//shift = width / 2;shift = width / 1;}}private void init() {setBackgroundResource(android.R.color.transparent);mHandler = new Handler(new Handler.Callback() {@Overridepublic boolean handleMessage(Message msg) {for (Entity e : entities) {e.update();}invalidate();mHandler.sendEmptyMessageDelayed(0, delayMillis);time += delayMillis;return false;}});}public void setColor(int color) {this.color = color;}public void stop() {mHandler.removeMessages(0);started = false;invalidate();}public boolean isStart() {return started;}public void start() {if (started)return;started = true;time = 0;entities = new ArrayList<IndeterminateProgressBar.Entity>();float s = .25f;entities.add(new Entity(0, color, 0));entities.add(new Entity(1 * s, color, delayMillis * 4));entities.add(new Entity(2 * s, color, delayMillis * 8));entities.add(new Entity(3 * s, color, delayMillis * 12));entities.add(new Entity(4 * s, color, delayMillis * 16));// entities.add(new Entity(5 * s, color, delayMillis * 20));if (mHandler != null)mHandler.sendEmptyMessage(0);}@Overrideprotected void onDraw(Canvas canvas) {if (entities != null && entities.size() > 0) {for (Entity e : entities) {e.draw(canvas);}}super.onDraw(canvas);}class Entity {private float x;private float y;private int color;private Paint paint;private double sp = 0;private long delay;private int sec = 0;private float pec = 0;boolean visiable = true;public float getInterpolation(float input) {return (float) (Math.cos((input + 1) * Math.PI) / 2.0f) + 0.5f;}public Entity(float sp, int color, int delay) {paint = new Paint();paint.setAntiAlias(true);paint.setStyle(Paint.Style.FILL);this.color = color;this.sp = sp;this.delay = delay;paint.setColor(this.color);}public void update() {if (time < delay)return;visiable = true;pec += 0.03;if (pec > 1) {pec = 0;sec = ++sec == 3 ? 0 : sec;delay = sec == 0 ? time + delayMillis * 22 : time + delayMillis* 3;visiable = sec == 0 ? false : true;}double θ = Math.PI* .5+ (sec == 0 ? 0 : sec * Math.PI / sec)- (sec == 0 ? 0 : sp)+ (Math.PI * (sec == 1 ? 2 : 1) - (sec == 0 ? sp : 0) + (sec == 2 ? sp: 0)) * getInterpolation(pec);x = (float) (r / 2 * Math.cos(θ)) + shift / 2;y = (float) (r / 2 * Math.sin(θ)) + shift / 2;}public void draw(Canvas canvas) {if (!visiable || x == 0 || y == 0)return;canvas.save();canvas.translate(x, y);canvas.drawCircle(x, y, radius, paint);canvas.restore();}}@Overrideprotected void onAttachedToWindow() {super.onAttachedToWindow();if (getVisibility() == View.VISIBLE) {start();}}@Overrideprotected void onDetachedFromWindow() {super.onDetachedFromWindow();stop();}public void setDelayMillis(int delayMillis) {this.delayMillis = delayMillis;}}
效果图:

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