Android 5.0之后的新API，平时很少用到这里记录下

1. 获取系统服务

        mMediaProjectionManager = (MediaProjectionManager) getSystemService(Context.MEDIA_PROJECTION_SERVICE);if (mMediaProjectionManager != null) {startActivityForResult(mMediaProjectionManager.createScreenCaptureIntent(),200);}
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2. onActivityResult中获取MediaProjection

    protected void onActivityResult(int requestCode, int resultCode, Intent data) {super.onActivityResult(requestCode, resultCode, data);if (requestCode == 200) {mMediaProjection = mMediaProjectionManager.getMediaProjection(resultCode, data);}}
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3.开始录制

    private void startCapture() {mMediaProjection.createVirtualDisplay("screen-mirror",mSurfaceView.getWidth(),mSurfaceView.getHeight(),Resources.getSystem().getDisplayMetrics().densityDpi,DisplayManager.VIRTUAL_DISPLAY_FLAG_AUTO_MIRROR,mSurfaceView.getHolder().getSurface(),null,null);}
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4.截屏

1. 如果取余截屏的话我们要使用到ImageReader这个类，调用createVirtualDisplay：

    private void startCapture() {mImageReader = ImageReader.newInstance(mWindowWidth, mWindowHeight,PixelFormat.RGBA_8888, 2);mMediaProjection.createVirtualDisplay("screen-mirror",mWindowWidth,mWindowHeight,mScreenDensity,DisplayManager.VIRTUAL_DISPLAY_FLAG_AUTO_MIRROR,mImageReader.getSurface(),null,null);}
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1. 截取Bitmap

    private Bitmap screenshot() {Image image = mImageReader.acquireLatestImage();int width = image.getWidth();int height = image.getHeight();Image.Plane[] planes = image.getPlanes();ByteBuffer buffer = planes[0].getBuffer();int pixelStride = planes[0].getPixelStride();int rowStride = planes[0].getRowStride();int rowPadding = rowStride - pixelStride * widthBitmap bitmap = Bitmap.createBitmap(width + rowPadding / pixelStride,height, Bitmap.Config.ARGB_8888);bitmap.copyPixelsFromBuffer(buffer);bitmap = Bitmap.createBitmap(bitmap, 0, 0, width, height);image.close();return bitmap;}
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