小方法总结

1.得到屏幕宽高+在代码里设置应用的宽高

[java] view
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1. // 屏幕矩形
2. mRect =new Rect(0,0,this.getWindowManager().getDefaultDisplay().getWidth(),
3. this.getWindowManager().getDefaultDisplay().getHeight());
4. FrameLayout lfl = (FrameLayout)findViewById(R.id.FrameLayout);
5. FrameLayout.LayoutParams lFLpp = (FrameLayout.LayoutParams)lfl.getLayoutParams();
6. lFLpp.width = mRect.width();
7. lFLpp.height = mRect.height();
8. lfl.setLayoutParams(lFLpp);

2.设置无标题，全屏，横屏

[java] view
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1. requestWindowFeature(Window.FEATURE_NO_TITLE);                          // 无标题
2. getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
3. WindowManager.LayoutParams.FLAG_FULLSCREEN);                             // 全屏
4. setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);   // 横屏

3.以String形式返回当前时间

[java] view
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1. private String getTimeReturnString() {
2. Time m_Time = new Time("GMT+8");
3. m_Time.setToNow();
4. return String.format("%dH%dS%dM",m_Time.hour,m_Time.minute,m_Time.second);
5. }

4.SurfaceView设置背景透明

[java] view
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1. this.setZOrderOnTop(true);
2. mSurfaceHolder.setFormat(PixelFormat.TRANSPARENT);

5.类似1的另一种实现

[java] view
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1. mWindow = getWindow();
2. WindowManager.LayoutParams lLayoutParams = mWindow.getAttributes();
3. lLayoutParams.x = paX;
4. lLayoutParams.y = paY;
5. lLayoutParams.width = paWidth;
6. lLayoutParams.height = paHeight;
7. lLayoutParams.dimAmount = 0f;   // 背景不变暗
8. mWindow.setAttributes(lLayoutParams);

5.通知栏的坐标变化动画计算方式。看了下其实是加速度的计算方法，不过不知道我自已写的运行效果不理想，没有系统的平滑。

[java] view
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1. void incrementAnim() {
2. long now = SystemClock.uptimeMillis();
3. float t = ((float)(now - mAnimLastTime)) / 1000;            // ms -> s
4. final float x = mAnimX;
5. final float v = mAnimVel;                                   // px/s
6. final float a = mAnimAccel;                                 // px/s/s
7. mAnimX = x + (v*t) + (0.5f*a*t*t);                          // px
8. mAnimVel = v + (a*t);                                       // px/s
9. mAnimLastTime = now;                                        // ms
10. }