我使用以下代码拍摄照片
Intent takePhotoIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
File photoPath = new File(getExternalFilesDir(null), "postcard.jpg");
takePhotoIntent.putExtra(MediaStore.EXTRA_OUTPUT,
Uri.fromFile(photoPath));
log.debug("start camera for {}", photoPath.getAbsolutePath());
startActivityForResult(takePhotoIntent, REQUEST_TAKE_PHOTO);
...
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == REQUEST_TAKE_PHOTO) {
if (resultCode == RESULT_OK) {
log.debug("photo successfully created");
} else {
log.error("problem to take photo resultCode={}", resultCode);
}
} else {
log.debug("not my request: {}", requestCode);
}
}
这在Android 5上运行正常，但在带有resultCode=0（RESULT_CANCELED）的Android 6和logcat错误消息上失败：
03-09 07：56：13.759 878-3735 /？ W / ActivityManager：Appop拒绝： 启动Intent {act = android.media.action.IMAGE_CAPTURE flg = 0x3 CMP = com.google.android.GoogleCamera / com.android.camera.CaptureActivity 夹= {文本/ URI列表 U：文件：///storage/emulated/0/Android/data/censored.package.name.here/files/postcard.jpg} 来自ProcessRecord {55cce35的（有额外的）} 21309：censored.package.name.here/u0a136}（pid = 21309，uid = 10136） 需要android：camera
我在Android Manifest中有以下内容：
<uses-permission android:name="android.permission.CAMERA" />
<uses-feature android:name="android.hardware.camera" />
我还检查应用程序是否确实拥有相机权限，此检查通过。
checkSelfPermission(Manifest.permission.CAMERA) == PackageManager.PERMISSION_GRANTED
另外值得注意的是，我在项目中也包含了一个也使用相机的aar。这包括库在清单中有这个：
<uses-feature android:name="android.hardware.camera" android:required="false"/>
<uses-feature android:name="android.hardware.camera.front" android:required="false"/>
<uses-feature android:name="android.hardware.camera.autofocus" android:required="false"/>
<uses-feature android:name="android.hardware.camera.flash" android:required="false"/>
<uses-feature android:name="android.hardware.screen.landscape" android:required="false" />
<uses-feature android:name="android.hardware.wifi" android:required="false"/>
是否有人知道错误消息的含义或如何解决此问题？谷歌在这种情况下没有帮助。
到目前为止，我没有成功用一个小例子重现问题。它似乎是与另一个应用程序部分的一些交互。
答案 0 :(得分：2)
经过一天多的实验和调试，它现在正常工作。代码仍然完全相同。
我想，通过设置撤消相机权限，然后重新启用它就可以了，但我不完全确定。
如果有人遇到同样的问题，请将此作为答案发布。
答案 1 :(得分：-1)
- 完整的代码，用于捕获图像，保存到SD卡，从图库中选择，压缩，旋转图像等.200％正常工作。
public class A extends AppCompatActivity implements View.OnClickListener, AsyncTaskCompleteListener {
private static final String IMAGE_DIRECTORY = "/idyme";
private static int MAX_IMAGE_DIMENSION = 200;
private final String TAG = "RegisterFragment";
private Button btnVerify, btnUploadImage;
private String ImgPath = null, filePath = null,
profileImageFilePath, profileImageData = null,imageVideoType = "", imageVideoPath = "";
private ImageView ivImage;
private AQuery aQuery;
private Uri uri = null;
private ImageOptions imageOptions;
ActionBar actionBar;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_vip_registration);
ivImage = (ImageView) findViewById(R.id.ivProfile);
aQuery = new AQuery(this);
imageOptions = new ImageOptions();
imageOptions.memCache = true;
imageOptions.fileCache = true;
imageOptions.fallback = R.drawable.userimage;
}
@Override
public void onClick(View v) {
// onRegisterButtonClick();
switch (v.getId()) {
case R.id.btnUploadImage:
showPictureDialog();
}
}
private void showPictureDialog() {
AlertDialog.Builder pictureDialog = new AlertDialog.Builder(this);
pictureDialog.setTitle(getResources().getString(
R.string.dialog_chhose_photo));
String[] pictureDialogItems = {
getResources().getString(R.string.dialog_from_gallery),
getResources().getString(R.string.dialog_from_camera)};
pictureDialog.setItems(pictureDialogItems,
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
switch (which) {
case 0:
choosePhotoFromGallary();
break;
case 1:
takePhotoFromCamera();
break;
}
}
});
pictureDialog.show();
}
private void choosePhotoFromGallary() {
Intent galleryIntent = new Intent(Intent.ACTION_PICK,
android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(galleryIntent, Constants.CHOOSE_PHOTO);
}
private void takePhotoFromCamera() {
Calendar cal = Calendar.getInstance();
File file = new File(Environment.getExternalStorageDirectory(),
(cal.getTimeInMillis() + ".jpg"));
if (!file.exists()) {
try {
file.createNewFile();
} catch (IOException e) {
e.printStackTrace();
}
} else {
file.delete();
try {
file.createNewFile();
} catch (IOException e) {
e.printStackTrace();
}
}
// uri = Uri.fromFile(file);
uri = getOutputMediaFileUri();
Intent cameraIntent = new Intent(
android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, uri);
startActivityForResult(cameraIntent, Constants.TAKE_PHOTO);
}
public Uri getOutputMediaFileUri() {
return Uri.fromFile(getOutputMediaFile());
}
private String getRealPathFromURI(Uri contentURI) {
String result;
String[] proj = {MediaStore.Images.Media.DATA};
Cursor cursor = this.getContentResolver().query(contentURI, proj, null, null, null);
if (cursor == null) { // Source is Dropbox or other similar local file
// path
result = contentURI.getPath();
} else {
cursor.moveToFirst();
int idx = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
result = cursor.getString(idx);
cursor.close();
}
return result;
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (resultCode == this.RESULT_CANCELED) {
return;
}
if (requestCode == Constants.CHOOSE_PHOTO) {
if (data != null) {
Uri contentURI = data.getData();
profileImageData = getRealPathFromURI(contentURI);
// new AQuery(getApplicationContext()).id(ivMeme).image(
// profileImageData, imageOptions);
try {
String path = saveImage(scaleImage(this, contentURI));
imageVideoPath = path;
aQuery.id(R.id.ivProfile).image(
imageVideoPath, imageOptions);
} catch (IOException e) {
e.printStackTrace();
Utils.showToast("Failed", this);
}
}
} else if (requestCode == Constants.TAKE_PHOTO) {
// old
if (uri != null) {
profileImageFilePath = uri.getPath();
if (profileImageFilePath != null
&& profileImageFilePath.length() > 0) {
File myFile = new File(profileImageFilePath);
String path = saveImage(BitmapFactory
.decodeFile(profileImageFilePath));
imageVideoPath = path;
aQuery.id(R.id.ivProfile).image(
imageVideoPath, imageOptions);
} else {
Utils.showToast("Failed", this);
}
} else {
Utils.showToast("Failed", this);
}
}
}
public String saveImage(Bitmap myBitmap) {
ByteArrayOutputStream bytes = new ByteArrayOutputStream();
myBitmap.compress(Bitmap.CompressFormat.JPEG, 90, bytes);
File wallpaperDirectory = new File(
Environment.getExternalStorageDirectory() + IMAGE_DIRECTORY);
// have the object build the directory structure, if needed.
if (!wallpaperDirectory.exists()) {
wallpaperDirectory.mkdirs();
}
try {
File f = new File(wallpaperDirectory, Calendar.getInstance()
.getTimeInMillis() + ".jpg");
f.createNewFile();
FileOutputStream fo = new FileOutputStream(f);
fo.write(bytes.toByteArray());
MediaScannerConnection.scanFile(this,
new String[]{f.getPath()},
new String[]{"image/jpeg"}, null);
fo.close();
AppLog.Log("TAG", "File Saved::-> " + f.getAbsolutePath());
return f.getAbsolutePath();
} catch (IOException e1) {
e1.printStackTrace();
}
return "";
}
private static File getOutputMediaFile() {
// External sdcard location
File mediaStorageDir = new File(
Environment
.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES),
IMAGE_DIRECTORY);
// Create the storage directory if it does not exist
if (!mediaStorageDir.exists()) {
if (!mediaStorageDir.mkdirs()) {
Log.d(IMAGE_DIRECTORY, "Oops! Failed create " + IMAGE_DIRECTORY
+ " directory");
return null;
}
}
// Create a media file name
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss",
Locale.getDefault()).format(new Date());
File mediaFile;
mediaFile = new File(mediaStorageDir.getPath() + File.separator
+ "VID_" + timeStamp + ".mp4");
return mediaFile;
}
public static Bitmap scaleImage(Context context, Uri photoUri)
throws IOException {
InputStream is = context.getContentResolver().openInputStream(photoUri);
BitmapFactory.Options dbo = new BitmapFactory.Options();
dbo.inJustDecodeBounds = true;
BitmapFactory.decodeStream(is, null, dbo);
is.close();
int rotatedWidth, rotatedHeight;
int orientation = getOrientation(context, photoUri);
if (orientation == 90 || orientation == 270) {
rotatedWidth = dbo.outHeight;
rotatedHeight = dbo.outWidth;
} else {
rotatedWidth = dbo.outWidth;
rotatedHeight = dbo.outHeight;
}
Bitmap srcBitmap;
is = context.getContentResolver().openInputStream(photoUri);
if (rotatedWidth > MAX_IMAGE_DIMENSION
|| rotatedHeight > MAX_IMAGE_DIMENSION) {
float widthRatio = ((float) rotatedWidth)
/ ((float) MAX_IMAGE_DIMENSION);
float heightRatio = ((float) rotatedHeight)
/ ((float) MAX_IMAGE_DIMENSION);
float maxRatio = Math.max(widthRatio, heightRatio);
// Create the bitmap from file
BitmapFactory.Options options = new BitmapFactory.Options();
options.inSampleSize = (int) maxRatio;
srcBitmap = BitmapFactory.decodeStream(is, null, options);
} else {
srcBitmap = BitmapFactory.decodeStream(is);
}
is.close();
/*
* if the orientation is not 0 (or -1, which means we don't know), we
* have to do a rotation.
*/
if (orientation > 0) {
Matrix matrix = new Matrix();
matrix.postRotate(orientation);
srcBitmap = Bitmap.createBitmap(srcBitmap, 0, 0,
srcBitmap.getWidth(), srcBitmap.getHeight(), matrix, true);
}
String type = context.getContentResolver().getType(photoUri);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
if (type.equals("image/png")) {
srcBitmap.compress(Bitmap.CompressFormat.PNG, 100, baos);
} else if (type.equals("image/jpg") || type.equals("image/jpeg")) {
srcBitmap.compress(Bitmap.CompressFormat.JPEG, 100, baos);
}
byte[] bMapArray = baos.toByteArray();
baos.close();
return BitmapFactory.decodeByteArray(bMapArray, 0, bMapArray.length);
}
public static int getOrientation(Context context, Uri photoUri) {
/* it's on the external media. */
Cursor cursor = context.getContentResolver().query(photoUri,
new String[]{MediaStore.Images.ImageColumns.ORIENTATION},
null, null, null);
if (cursor.getCount() != 1) {
return -1;
}
cursor.moveToFirst();
return cursor.getInt(0);
}
}
- 需要许可：
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.CAMERA" />