Android - 获取图像 uri 的问题 [英] Android - Problem getting image uri
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问题描述
就像标题所说的那样,我的问题涉及相机拍摄的图像的图像 uri.Uri 始终为空……为什么?
like the title says my problem concerns the image uri of images taken by the camera. Uri is always null ... WHY?
@Override
public void onClick(View v) {
Intent cameraIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(cameraIntent, TAKE_PICTURE);
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data){
if (requestCode == TAKE_PICTURE)
{
//Uri contentURI = Uri.parse(data.getDataString());
thumbnail = (Bitmap) data.getExtras().get("data");
ImageView image = (ImageView) findViewById(R.id.photoResultView);
image.setImageBitmap(thumbnail);
photoUri = data.getData();
Log.e("FOTOLOG",""+ photoUri);
}
}
推荐答案
看看这个,
Android ACTION_IMAGE_CAPTURE Intent
可能会为您提供一些见解.
might provide you with some insight.
public void startCamera() {
File photo = null;
Intent intent = new Intent("android.media.action.IMAGE_CAPTURE");
if (android.os.Environment.getExternalStorageState().equals(
android.os.Environment.MEDIA_MOUNTED)) {
photo = new File(android.os.Environment
.getExternalStorageDirectory(), FILE_NAME);
} else {
photo = new File(getCacheDir(), FILE_NAME);
}
if (photo != null) {
intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(photo));
selectedImageUri = Uri.fromFile(photo);
startActivityForResult(intent, IMAGE_CAPTURE);
}
}
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == IMAGE_CAPTURE) {
if (resultCode == Activity.RESULT_OK) {
try {
Uri selectedImage = selectedImageUri;
//getContentResolver().notifyChange(selectedImage, null);
ContentResolver cr = getContentResolver();
Bitmap bitmap;
bitmap = android.provider.MediaStore.Images.Media
.getBitmap(cr, selectedImage);
rptImage.setImageBitmap(bitmap);
} catch (Exception e) {
Toast.makeText(this, "Failed to load", Toast.LENGTH_SHORT)
.show();
Log.e("Camera", e.toString());
}
} else {
selectedImageUri = null;
rptImage.setImageBitmap(null);
}
}
}
这是我的应用程序中的代码示例.
That's a code sample from my application.
你需要权限,
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.CAMERA" />
<uses-feature android:name="android.hardware.camera" />
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