将相机拍摄的照片保存在android应用中

Question

我已经在此问题上停留了一段时间，并查看了各种教程以寻求帮助，但尚未成功。

我实质上已经camera在我的 应用程序中 利用了该功能来 拍照 并显示preview它， 但是 它无法保存拍照。

这是java包含我试图使其根据教程发挥作用的代码：

public class Activity_Camera extends Activity implements View.OnClickListener {

    ImageButton ib;
    ImageView iv;
    Intent i;
    public static final int cameraData = 0;
    Bitmap bmp;

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.activity_main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
        case R.id.Info:

            Intent i = new Intent(this, Help.class);
            startActivity(i);

            return true;
        default:
            return super.onOptionsItemSelected(item);
        }
    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_camera);
        initialise();
    }

    private void initialise() {
        iv = (ImageView) findViewById(R.id.ivPicReturn);
        ib = (ImageButton) findViewById(R.id.ibTakePic);

        ib.setOnClickListener(this);
    }

    public void onClick(View v) {
        switch (v.getId()) {
        case R.id.ibTakePic:
            i = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
            startActivityForResult(i, cameraData);
            break;
        }
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (resultCode == RESULT_OK) {
            Bundle extras = data.getExtras();
            bmp = (Bitmap) extras.get("data");
            iv.setImageBitmap(bmp);

            Toast.makeText(this, "Image saved to:\n" +
                    data.getData(), Toast.LENGTH_LONG).show();
       } else if (resultCode == RESULT_CANCELED) {
           // User cancelled the image capture
       } else {
           // Image capture failed, advise user
       }
    }

    private static Uri getOutputMediaFileUri(int type){
          return Uri.fromFile(getOutputMediaFile(type));
    }
    private static File getOutputMediaFile(int type){

        File mediaStorageDir = new File(Environment.getExternalStoragePublicDirectory(
                  Environment.DIRECTORY_PICTURES), "MyCameraApp");

        if (! mediaStorageDir.exists()){
            if (! mediaStorageDir.mkdirs()){
                Log.d("MyCameraApp", "failed to create directory");
                return null;
            }
        }
        File mediaFile;
        if (type == cameraData){
            mediaFile = new File(mediaStorageDir.getPath() + File.separator +
            "IMG_" + ".jpg");
        } else {
            return null;
        }
        return mediaFile;
    }
}

我已经permissions在Manifest.xml文件中包含了所有必要的内容。

Answer 1

File imagesFolder = new File(Environment.getExternalStorageDirectory(), “MyImages”);
imagesFolder.mkdirs();
File image = new File(imagesFolder, “image.jpg”);
Uri uriSavedImage = Uri.fromFile(image);
imageIntent.putExtra(MediaStore.EXTRA_OUTPUT, uriSavedImage);

看看这个链接。如何将图像从Android中的相机保存到特定文件夹？