Question

我正在为我的应用程序添加一个摄像头，我基本上已决定添加一个意图，并使用内置摄像头。意图有效，它称之为好，但是当它保存时会变得很奇怪。根据Eclipse的说法，照片正在保存到SD卡中，当我进入FileExplorer时，我可以看到它们并将它们关闭。但是，当我真正去探索SD卡时，文件就不存在了。

public class C4Main extends Activity {
private static final int REQUEST_CODE = 1;
private Bitmap bitmap;
private ImageView imageView;
private Camera cam;
private SurfaceHolder sh;
private Uri fileUri;

/** Called when the activity is first created. */

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    Log.d("testing","before intent");
    Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);

    fileUri = getOutputMediaFileUri(1); // create a file to save the image
    intent.putExtra(MediaStore.EXTRA_OUTPUT, fileUri); // set the image file name
    Log.d("testing","fileUri: "+fileUri);
    // start the image capture Intent
    startActivityForResult(intent, 100);
    Log.d("testing","after startactivity");
}
private static Uri getOutputMediaFileUri(int type){
      return Uri.fromFile(getOutputMediaFile(type));
}

/** Create a File for saving an image or video */
private static File getOutputMediaFile(int type){
    // To be safe, you should check that the SDCard is mounted
    // using Environment.getExternalStorageState() before doing this.

    File mediaStorageDir = new File(Environment.getExternalStoragePublicDirectory(
              Environment.DIRECTORY_PICTURES), "MyCameraApp");
    // This location works best if you want the created images to be shared
    // between applications and persist after your app has been uninstalled.

    // Create the storage directory if it does not exist
    if (! mediaStorageDir.exists()){
        if (! mediaStorageDir.mkdirs()){
            Log.d("MyCameraApp", "failed to create directory");
            return null;
        }
    }

    // Create a media file name
    String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
    File mediaFile;
    if (type == 1){
        mediaFile = new File(mediaStorageDir.getPath() + File.separator +
        "IMG_"+ timeStamp + ".jpg");
        Log.d("testing loop","Filepath: "+mediaFile.getPath());
    } else if(type == 2) {
        mediaFile = new File(mediaStorageDir.getPath() + File.separator +
        "VID_"+ timeStamp + ".mp4");
    } else {
        return null;
    }

    return mediaFile;
}
}

这是我正在使用的代码，从developer.google复制。正如我在Eclipse中根据FileExplorer说的那样，它保存到指定的路径，但它不在我的SD卡上。我的硬件是ASUS Transformer prime运行android 4.0.3。该清单的设置允许外部书写和相机使用。

非常感谢任何帮助。

Answer 1

我正在使用这个意图使用内置相机。它会自动将图像存储在SD卡中。

Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE); 
                    flagImage=1;
                    startActivityForResult(cameraIntent, CAMERA_REQUEST);

Answer 2

protected void onActivityResult(int requestCode, int resultCode, Intent data) {
try {
        if (requestCode == CAMERA_REQUEST) {
            Bitmap photo = (Bitmap) data.getExtras().get("data");
Cursor c1 = cr.query(
                    MediaStore.Images.Media.EXTERNAL_CONTENT_URI, p1, null,
                    null, p1[1] + " DESC");
if (c1.moveToFirst()) {
                String uristringpic = "content://media/external/images/media/"
                        + c1.getInt(0);
                Uri newuri = Uri.parse(uristringpic);
                // Log.i("TAG", "newuri "+newuri);
                String snapName = getRealPathFromURI(newuri);

                Uri u = Uri.parse(snapName);

                File f = new File("" + u);
ByteArrayOutputStream bos = new ByteArrayOutputStream();
                photo.compress(CompressFormat.PNG, 0 /* ignored for PNG */,
                        bos);
                byte[] bitmapdata = bos.toByteArray();
// Storing Image in new folder
                StoreByteImage(mContext, bitmapdata, 100, fileName);

Android相机保存，但没有出现在SD卡上

2 个答案: