使用相机拍照并保存到图库

时间:2017-01-21 09:42:33

标签: android android-camera-intent

我已经浏览了几个文档和堆栈,但是我不太确定如何实现这个...

帮助或示例代码可以帮助我了解更多信息。

以下是运行相机的代码组,它的工作非常好,我的下一个问题是,如何让它自动保存到手机图库中?

    @Override
    protected void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_home);
        tvCameraTiles = (TextView) findViewById(R.id.tvCameraTiles);

        tvCameraTiles.setOnClickListener(new  View.OnClickListener()
        {
             @Override
             public void onClick(View v)
             {
                 dispatchTakePictureIntent();
             }
         });
    }

    private void dispatchTakePictureIntent()
    {
        Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);

        if (takePictureIntent.resolveActivity(getPackageManager()) != null)
        {
            startActivityForResult(takePictureIntent, REQUEST_IMAGE_CAPTURE);
        }
    }


    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data)
    {
        if (requestCode == REQUEST_IMAGE_CAPTURE && resultCode == RESULT_OK)
        {
            //Get Camera Image File Data
//            Bundle extras = data.getExtras();
//            Bitmap imageBitmap = (Bitmap) extras.get("data");
//            mImageView.setImageBitmap(imageBitmap);
        }
    }

3 个答案:

答案 0 :(得分:3)

你读过这个https://developer.android.com/training/camera/photobasics.html吗?

特别是部分:

private void galleryAddPic() {
    Intent mediaScanIntent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
    File f = new File(mCurrentPhotoPath);
    Uri contentUri = Uri.fromFile(f);
    mediaScanIntent.setData(contentUri);
    this.sendBroadcast(mediaScanIntent);
}

您似乎无法将照片保存在外部存储设备中,因此它应该可以正常工作。

编辑:我尝试使用方法galleryAddPic的文档制作一个非常基本的应用程序。

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

    Button photoButton = (Button) findViewById(R.id.photobutton);
    photoButton.setOnClickListener(new  View.OnClickListener()
    {
        @Override
        public void onClick(View v)
        {
            dispatchTakePictureIntent();
        }
    });
}

static final int REQUEST_IMAGE_CAPTURE = 1;

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (requestCode == REQUEST_IMAGE_CAPTURE && resultCode == RESULT_OK) {
        //Bundle extras = data.getExtras();
        //Bitmap imageBitmap = (Bitmap) extras.get("data");
        //mImageView.setImageBitmap(imageBitmap);
        galleryAddPic();
    }
}

String mCurrentPhotoPath;

private File createImageFile() throws IOException {
    File storageDir = Environment.getExternalStorageDirectory();
    File image = File.createTempFile(
            "example",  /* prefix */
            ".jpg",         /* suffix */
            storageDir      /* directory */
    );
    mCurrentPhotoPath = image.getAbsolutePath();
    return image;
}

private void dispatchTakePictureIntent() {
    Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
    if (takePictureIntent.resolveActivity(getPackageManager()) != null) {
        File photoFile = null;
        try {
            photoFile = createImageFile();
        } catch (IOException ex) {
            ex.printStackTrace();
        }
        if (photoFile != null) {
            takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(photoFile));
            startActivityForResult(takePictureIntent, REQUEST_IMAGE_CAPTURE);
        }
    }
}

private void galleryAddPic() {
    Intent mediaScanIntent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
    File f = new File(mCurrentPhotoPath);
    Uri contentUri = Uri.fromFile(f);
    mediaScanIntent.setData(contentUri);
    this.sendBroadcast(mediaScanIntent);
}

这对我有用!我使用相机应用程序拍照,然后它在画廊应用程序中显示。 我修改了关于FileProvider部分的代码,现在它在方法Uri.fromFile(photoFile)的帮助下传递了Uri。我也将照片保存在不同的位置,检查createImageFile方法中的代码。

在Android Studio模拟器工作正常,请告诉我你的事。

答案 1 :(得分:0)

首先创建文件,然后将ByteStream写入文件并保存。您不会对此文件执行任何操作以显示在库中。这将由图库自动刷新。

答案 2 :(得分:0)

我试用了Rex B代码段,但最终在Android Studio上收到错误消息。

 android.os.FileUriExposedException: file:///storage/emulated/0/example6941495009290613124.jpg exposed beyond app through ClipData.Item.getUri()

如果有人遇到此错误,我发现了一个简单的Keras.Sequential()

StrictMode.VmPolicy.Builder builder = new StrictMode.VmPolicy.Builder();
StrictMode.setVmPolicy(builder.build());

我将这两行添加到onClick方法

  Button photoButton = (Button) findViewById(R.id.photobutton);
    photoButton.setOnClickListener(new  View.OnClickListener()
    {
        @Override
        public void onClick(View v)
        {
        StrictMode.VmPolicy.Builder builder = new StrictMode.VmPolicy.Builder();
        StrictMode.setVmPolicy(builder.build());
            dispatchTakePictureIntent();
        }
    });
}

我知道这是旧帖子,但是我相信有人会在这一天到来。