Android中镜像路径为空
Android中镜像路径为空
提问于 2016-12-12 21:37:30
我有这样的代码，问题是当我想要将它保存到sqlite时，错误消息显示我在图像路径中获得了null。下面是主要的活动
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode == RESULT_OK) {
if (requestCode == SELECT_PICTURE) {
Uri selectedImageUri = data.getData();
System.out.println("Data Image : "+selectedImageUri);
selectedImagePath = getPath(selectedImageUri);
System.out.println("Image Path : " + selectedImagePath);
image1.setVisibility(View.VISIBLE);
image1.setImageURI(selectedImageUri);
}
}
}
private String getRealPathFromURI(Uri contentURI) {
String result;
Cursor cursor = getContentResolver().query(contentURI, null, null, null, null);
if (cursor == null) { // Source is Dropbox or other similar local file path
result = contentURI.getPath();
} else {
cursor.moveToFirst();
int idx = cursor.getColumnIndex(MediaStore.Images.ImageColumns.DATA);
result = cursor.getString(idx);
cursor.close();
}
return result;
}
public String getPath(Uri uri) {
String[] projection = { MediaStore.Images.Media.DATA };
Cursor cursor = managedQuery(uri, projection, null, null, null);
int column_index = cursor
.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
return cursor.getString(column_index);
}回答 2
Stack Overflow用户
发布于 2016-12-12 22:01:38
我使用这种方法从相机中拍摄照片。
private void capturePhoto() {
// save this Uri in a field variable.
uri = getContentResolver().insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
new ContentValues());
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
intent.putExtra(MediaStore.EXTRA_OUTPUT, uri);
startActivityForResult(intent, CAMERA_REQUEST);
}然后，onActivityResult将如下所示：
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == CAMERA_REQUEST && resultCode == RESULT_OK){
// use the field Uri, it now points to the path to the image taken from the camera.
}
}Stack Overflow用户
发布于 2017-03-20 18:32:24
清单文件中的
- 设置权限
在READ_EXTERNAL_STORAGE
- If方法中授予
- 检查权限，在被授予权限后，它具有权限，然后调用
doCreatePath()并在被授予权限时在onRequestPermissionsResult中设置相同权限。
void doCreatePath()
{
try {
Uri originalUri = filePath;
String pathsegment[] = originalUri.getLastPathSegment().split(":");
String id = pathsegment[0];
final String[] imageColumns = {MediaStore.Images.Media.DATA};
final String imageOrderBy = null;
Uri uri = getUri();
Cursor imageCursor = getActivity().getContentResolver().query(uri, imageColumns,
null, null, null);
if (imageCursor.moveToFirst()) {
int column_index_data = imageCursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
realPath = imageCursor.getString(column_index_data);
System.out.print("value" + realPath);
}
} catch (Exception e) {
e.printStackTrace();
}
}它起作用了！
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/41102150
复制相关文章
相似问题
腾讯云开发者
