我在三星S4的onActivityResult（int requestCode，int resultCode，Intent data）中获取相机意图的数据为null。但在其他一些设备上运行良好。我自定义了我的代码来获取数据并在网上搜索了这个问题，但没有发现任何有用的东西。请帮助我一些
/**
* chooseImageFromCamera
*/
private void chooseImageFromCamera() {
try {
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(intent, Constants.CAMERA_REQUEST_CODE);
} catch (Throwable throwable) {
throwable.printStackTrace();
}
}
/**
* onCaptureImageResult
*
* @param
*/
private void onCaptureImageResult(Intent data) {
try {
if (data.getData() != null) {
Uri contentUri = data.getData();
String selectedFilePath = ImageFilePath.getPath(
this, contentUri);
File file = new File(selectedFilePath);
} else {
if (data.getExtras().get("data") != null) {
System.out.println("else block");
Bitmap photo = (Bitmap) data.getExtras().get("data");
Uri contentUri = Utilities.getImageUri(this, photo);
String selectedFilePath = ImageFilePath.getPath(
this, contentUri);
File file = new File(selectedFilePath);
}
}
} catch (Throwable throwable) {
throwable.printStackTrace();
}
}
答案 0 :(得分：0)
试试这个。
将ImagePicker.java放入您的应用
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.content.pm.ResolveInfo;
import android.content.res.AssetFileDescriptor;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Camera;
import android.graphics.Matrix;
import android.media.ExifInterface;
import android.net.Uri;
import android.os.Parcelable;
import android.provider.MediaStore;
import android.util.Log;
import java.io.File;
import java.io.FileNotFoundException;
import java.util.ArrayList;
import java.util.List;
import static android.R.attr.orientation;
import static android.view.OrientationEventListener.ORIENTATION_UNKNOWN;
/**
* Created by creativeinfoway2 on 06/11/16.
*/
public class ImagePicker {
private static final int DEFAULT_MIN_WIDTH_QUALITY = 400; // min pixels
private static final String TAG = "ImagePicker";
private static final String TEMP_IMAGE_NAME = "tempImage";
public static int minWidthQuality = DEFAULT_MIN_WIDTH_QUALITY;
public static Intent getPickImageIntent(Context context) {
Intent chooserIntent = null;
List<Intent> intentList = new ArrayList<>();
Intent pickIntent = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
Intent takePhotoIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
takePhotoIntent.putExtra("return-data", true);
takePhotoIntent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(getTempFile(context)));
intentList = addIntentsToList(context, intentList, pickIntent);
intentList = addIntentsToList(context, intentList, takePhotoIntent);
if (intentList.size() > 0) {
chooserIntent = Intent.createChooser(intentList.remove(intentList.size() - 1),
context.getString(R.string.pick_image));
chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS, intentList.toArray(new Parcelable[]{}));
}
return chooserIntent;
}
private static List<Intent> addIntentsToList(Context context, List<Intent> list, Intent intent) {
List<ResolveInfo> resInfo = context.getPackageManager().queryIntentActivities(intent, 0);
for (ResolveInfo resolveInfo : resInfo) {
String packageName = resolveInfo.activityInfo.packageName;
Intent targetedIntent = new Intent(intent);
targetedIntent.setPackage(packageName);
list.add(targetedIntent);
Log.d(TAG, "Intent: " + intent.getAction() + " package: " + packageName);
}
return list;
}
public static Bitmap getImageFromResult(Context context, int resultCode,
Intent imageReturnedIntent) {
Log.d(TAG, "getImageFromResult, resultCode: " + resultCode);
Bitmap bm = null;
File imageFile = getTempFile(context);
if (resultCode == Activity.RESULT_OK) {
Uri selectedImage;
boolean isCamera = (imageReturnedIntent == null ||
imageReturnedIntent.getData() == null ||
imageReturnedIntent.getData().toString().contains(imageFile.toString()));
if (isCamera) {
/** CAMERA **/
selectedImage = Uri.fromFile(imageFile);
} else { /** ALBUM **/
selectedImage = imageReturnedIntent.getData();
}
Log.d(TAG, "selectedImage: " + selectedImage);
bm = getImageResized(context, selectedImage);
int rotation = getRotation(context, selectedImage, isCamera);
bm = rotate(bm, rotation);
}
return bm;
}
private static File getTempFile(Context context) {
File imageFile = new File(context.getExternalCacheDir(), TEMP_IMAGE_NAME);
imageFile.getParentFile().mkdirs();
return imageFile;
}
private static Bitmap decodeBitmap(Context context, Uri theUri, int sampleSize) {
BitmapFactory.Options options = new BitmapFactory.Options();
options.inSampleSize = sampleSize;
AssetFileDescriptor fileDescriptor = null;
try {
fileDescriptor = context.getContentResolver().openAssetFileDescriptor(theUri, "r");
} catch (FileNotFoundException e) {
e.printStackTrace();
}
Bitmap actuallyUsableBitmap = BitmapFactory.decodeFileDescriptor(
fileDescriptor.getFileDescriptor(), null, options);
Log.d(TAG, options.inSampleSize + " sample method bitmap ... " +
actuallyUsableBitmap.getWidth() + " " + actuallyUsableBitmap.getHeight());
return actuallyUsableBitmap;
}
/**
* Resize to avoid using too much memory loading big images (e.g.: 2560*1920)
**/
private static Bitmap getImageResized(Context context, Uri selectedImage) {
Bitmap bm = null;
int[] sampleSizes = new int[]{5, 3, 2, 1};
int i = 0;
do {
bm = decodeBitmap(context, selectedImage, sampleSizes[i]);
Log.d(TAG, "resizer: new bitmap width = " + bm.getWidth());
i++;
} while (bm.getWidth() < minWidthQuality && i < sampleSizes.length);
return bm;
}
private static int getRotation(Context context, Uri imageUri, boolean isCamera) {
int rotation;
if (isCamera) {
rotation = getRotationFromCamera(context, imageUri);
} else {
rotation = getRotationFromGallery(context, imageUri);
}
Log.d(TAG, "Image rotation: " + rotation);
return rotation;
}
private static int getRotationFromCamera(Context context, Uri imageFile) {
int rotate = 0;
try {
context.getContentResolver().notifyChange(imageFile, null);
ExifInterface exif = new ExifInterface(imageFile.getPath());
int orientation = exif.getAttributeInt(
ExifInterface.TAG_ORIENTATION,
ExifInterface.ORIENTATION_NORMAL);
switch (orientation) {
case ExifInterface.ORIENTATION_ROTATE_270:
rotate = 270;
break;
case ExifInterface.ORIENTATION_ROTATE_180:
rotate = 180;
break;
case ExifInterface.ORIENTATION_ROTATE_90:
rotate = 90;
break;
}
} catch (Exception e) {
e.printStackTrace();
}
return rotate;
}
public static int getRotationFromGallery(Context context, Uri imageUri) {
int result = 0;
String[] columns = {MediaStore.Images.Media.ORIENTATION};
Cursor cursor = null;
try {
cursor = context.getContentResolver().query(imageUri, columns, null, null, null);
if (cursor != null && cursor.moveToFirst()) {
int orientationColumnIndex = cursor.getColumnIndex(columns[0]);
result = cursor.getInt(orientationColumnIndex);
}
} catch (Exception e) {
//Do nothing
} finally {
if (cursor != null) {
cursor.close();
}
}//End of try-catch block
return result;
}
private static Bitmap rotate(Bitmap bm, int rotation) {
if (rotation != 0) {
Matrix matrix = new Matrix();
matrix.postRotate(rotation);
Bitmap bmOut = Bitmap.createBitmap(bm, 0, 0, bm.getWidth(), bm.getHeight(), matrix, true);
return bmOut;
}
return bm;
}
}
之后单击按钮或图像时OnClickListner使用此
img_upload.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent chooseImageIntent = ImagePicker.getPickImageIntent(getActivity());
startActivityForResult(chooseImageIntent, 101);
// openGallery();
}
});
在OnActivityResult之后
if (resultCode == Activity.RESULT_OK) {
switch (requestCode) {
case 101:
Bitmap bitmap = ImagePicker.getImageFromResult(getActivity(),resultCode,data);
img_upload.setImageBitmap(bitmap);
break;
}
}
希望它有所帮助。