[机器人 - 奇巧]获取/选择从Android的图像内置库的应用程序编程

问题描述

尝试从SD card.I我能够在kikat.But挑选的画廊和照片应用程序的图像没有得到文件的路径，当我从最近通话挑选形象正在逐渐的文件路径为空只挑选一个特定的形象。

Try to pick only one particular image from the SD card.I am able to pick images from gallery and Photos app in kikat.But not getting file path when i pick image from recents am getting file path as null.

我试过http://stackoverflow.com/a/2636538/1140321.

推荐答案

这适用于奇巧

public class BrowsePictureActivity extends Activity{

private static final int SELECT_PICTURE = 1;

private String selectedImagePath;
private ImageView imageView;

public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.browsepicture);
    imageView = (ImageView)findViewById(R.id.imageView1);

    ((Button) findViewById(R.id.button1))
            .setOnClickListener(new OnClickListener() {

                public void onClick(View arg0) {
                    Intent intent = new Intent();
                    intent.setType("image/*");
                    intent.setAction(Intent.ACTION_GET_CONTENT);
                    startActivityForResult(Intent.createChooser(intent,
                            "Select Picture"), SELECT_PICTURE);
                }
            });
}

public void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (resultCode == RESULT_OK) {
        if (requestCode == SELECT_PICTURE) {
            Uri selectedImageUri = data.getData();
            if (Build.VERSION.SDK_INT < 19) {
                selectedImagePath = getPath(selectedImageUri);
                Bitmap bitmap = BitmapFactory.decodeFile(selectedImagePath);
                imageView.setImageBitmap(bitmap);

            }
            else {
                ParcelFileDescriptor parcelFileDescriptor;
                try {
                    parcelFileDescriptor = getContentResolver().openFileDescriptor(selectedImageUri, "r");
                    FileDescriptor fileDescriptor = parcelFileDescriptor.getFileDescriptor();
                    Bitmap image = BitmapFactory.decodeFileDescriptor(fileDescriptor);
                    parcelFileDescriptor.close();
                    imageView.setImageBitmap(image);

                } catch (FileNotFoundException e) {
                    e.printStackTrace();
                } catch (IOException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        }
    }
}

/**
 * helper to retrieve the path of an image URI
 */
public String getPath(Uri uri) {
        if( uri == null ) {
            return null;
        }
        String[] projection = { MediaStore.Images.Media.DATA };
        Cursor cursor = getContentResolver().query(uri, projection, null, null, null);
        if( cursor != null ){
            int column_index = cursor
            .getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
            cursor.moveToFirst();
            return cursor.getString(column_index);
        }
        return uri.getPath();
}

}

您需要添加的权限

＆LT;使用-权限的Andr​​oid：名称=android.permission.READ_EXTERNAL_STORAG​​E/＆GT;

这篇关于[机器人 - 奇巧]获取/选择从Android的图像内置库的应用程序编程的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！