我开发了应用程序,需要截图.
但它只是应用程序的快照.我想从应用程序中拍摄快照.
我已经研究了答案,但我还没有找到答案.
这是我的代码
但它只是应用程序的快照.我想从应用程序中拍摄快照.
我已经研究了答案,但我还没有找到答案.
这是我的代码
View view = getWindow().getDecorView().getRootView(); view.setDrawingCacheEnabled(true); Bitmap bitmap = Bitmap.createBitmap(view.getDrawingCache()); view.setDrawingCacheEnabled(false); saveImageToAppFolder(bitmap);
解决方法
要拍摄设备屏幕的屏幕截图,只有有root用户
调用screencap二进制如：
调用screencap二进制如：
Process sh = Runtime.getRuntime().exec("su",null,null);
OutputStream os = sh.getOutputStream();
os.write(("/system/bin/screencap -p " + Environment.getExternalStorageDirectory()+ "/img.png").getBytes("ASCII"));
os.flush();
os.close();
sh.waitFor()
并将该文件加载到位图中,使用
public static Bitmap decodeSampledBitmapFromFile(String path,int reqWidth,int reqHeight) {
// First decode with inJustDecodeBounds=true to check dimensions
final BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
BitmapFactory.decodeFile(path,options);
// Calculate inSampleSize
options.inSampleSize = calculateInSampleSize(options,reqWidth,reqHeight);
// Decode bitmap with inSampleSize set
options.inJustDecodeBounds = false;
return BitmapFactory.decodeFile(path,options);
}
public static int calculateInSampleSize(
BitmapFactory.Options options,int reqHeight) {
// Raw height and width of image
final int height = options.outHeight;
final int width = options.outWidth;
int inSampleSize = 1;
if (height > reqHeight || width > reqWidth) {
final int halfHeight = height / 2;
final int halfWidth = width / 2;
// Calculate the largest inSampleSize value that is a power of 2 and keeps both
// height and width larger than the requested height and width.
while ((halfHeight / inSampleSize) > reqHeight
&& (halfWidth / inSampleSize) > reqWidth) {
inSampleSize *= 2;
}
}
return inSampleSize;
}
