Android 5.0之後的新API，平時很少用到這裡記錄下
1. 獲取系統服務
mMediaProjectionManager = (MediaProjectionManager) getSystemService(
Context.MEDIA_PROJECTION_SERVICE);
if (mMediaProjectionManager != null) {
startActivityForResult(mMediaProjectionManager.createScreenCaptureIntent(),
200);
}
複製程式碼2. onActivityResult中獲取MediaProjection
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == 200) {
mMediaProjection = mMediaProjectionManager.getMediaProjection(resultCode, data);
}
}
複製程式碼3.開始錄製
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);
}
複製程式碼4.截圖
- 如果取餘截圖的話我們要使用到ImageReader這個類，呼叫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);
}
複製程式碼- 擷取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 * width
Bitmap 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;
}
複製程式碼