我正在尝试从相机捕获图像，压缩它，然后将其存储到 SD 卡。如果我使用下面的代码直接将其保存到 SD 卡，我会得到完整的图像。但如果我尝试在系统中加载图像，我会得到一个超小的图像尺寸，例如 320 x 240，而不是完整的 5 mp 图像。
Intent intent = new Intent("android.media.action.IMAGE_CAPTURE");
intent.putExtra(MediaStore.EXTRA_OUTPUT, getImageUri());
startActivityForResult(intent, CAMERA_PIC_REQUEST);
其中 getImageURI() 是
private Uri getImageUri() {
// Store image in dcim
file = new File(Environment.getExternalStorageDirectory() + "/DCIM","itshelp.jpg");
imgUri = Uri.fromFile(file);
file.deleteOnExit();
Log.e("syS","file is at "+imgUri);
return imgUri;
}
现在，当我尝试将其保存到内部存储器时，我使用以下代码来获取小图像：
public void imageFromCamera() { //code to retrieve image
Intent intent = new Intent("android.media.action.IMAGE_CAPTURE");
startActivityForResult(intent, CAMERA_PIC_REQUEST);
}
在我的 startActivityForResult 中我有以下内容：
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == CAMERA_PIC_REQUEST && resultCode == RESULT_OK) {
Bitmap bm = (Bitmap) data.getExtras().get("data");
Log.e("sys", "width is "+bm.getWidth()); //im gettting an extremely small width here
OutputStream outStream = null;
file = new File(Environment.getExternalStorageDirectory() + "/DCIM","itshelp.png");
try {
outStream = new FileOutputStream(file);
bm.compress(Bitmap.CompressFormat.JPEG, 70, outStream);
outStream.flush();
outStream.close();
Log.i("Hub", "OK, Image Saved to SD");
Log.i("Hub", "height = "+ bm.getHeight() + ", width = " + bm.getWidth());
} catch (FileNotFoundException e) {
e.printStackTrace();
Log.i("Hub", "FileNotFoundException: "+ e.toString());
} catch (IOException e) {
e.printStackTrace();
Log.i("Hub", "IOException: "+ e.toString());
}
}
