Android 代码片段

1、屏幕大小

方法一：WindowManager windowManager = getWindowManager();Display display = windowManager.getDefaultDisplay();方法二：DisplayMetrics dm = new DisplayMetrics();getWindowManager().getDefaultDisplay().getMetrics(dm);

2、监听文件：android.os.FileObserver

3、设置主题实现没有标题栏或者全屏显示：

            android:theme="@android:style/Theme.Black.NoTitleBar"            android:theme="@android:style/Theme.Black.NoTitleBar.Fullscreen"            android:theme="@android:style/Theme.Light.NoTitleBar"            android:theme="@android:style/Theme.Light.NoTitleBar.Fullscreen"            android:theme="@android:style/Theme.NoTitleBar"            android:theme="@android:style/Theme.NoTitleBar.Fullscreen"

4、代码实现没有标题栏或者全屏显示：

        getWindow().requestFeature(Window.FEATURE_NO_TITLE);        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams. FLAG_FULLSCREEN);

5、图片倒影：

public static Bitmap createReflectionImageWithOrigin(Bitmap bitmap) {int reflectionGap = 1;int w = bitmap.getWidth();int h = bitmap.getHeight();Matrix matrix = new Matrix();matrix.preScale(1, -1);Bitmap reflectionImage = Bitmap.createBitmap(bitmap, 0, h / 2, w,h / 2, matrix, false);Bitmap bitmapWithReflection = Bitmap.createBitmap(w, (h + h / 2),Config.ARGB_8888);Canvas canvas = new Canvas(bitmapWithReflection);canvas.drawBitmap(bitmap, 0, 0, null);Paint deafalutPaint = new Paint();canvas.drawRect(0, h, w, h + reflectionGap, deafalutPaint);canvas.drawBitmap(reflectionImage, 0, h + reflectionGap, null);Paint paint = new Paint();LinearGradient shader = new LinearGradient(0, bitmap.getHeight(), 0,bitmapWithReflection.getHeight() + reflectionGap, 0x70ffffff,0x00ffffff, TileMode.CLAMP);paint.setShader(shader);paint.setXfermode(new PorterDuffXfermode(Mode.DST_IN));canvas.drawRect(0, h, w, bitmapWithReflection.getHeight()+ reflectionGap, paint);return bitmapWithReflection;}

n、不断添加中...

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