Android GetApplicationManager给出NullPointerException错误
下面是我的相机处理器：Android GetApplicationManager给出NullPointerException错误,android,camera,fragment,Android,Camera,Fragment,下面是我的相机处理器： public class CameraHandler { public static int IMAGE_PIC_CODE = 1000, CROP_CAMERA_REQUEST = 1001, CROP_GALLARY_REQUEST = 1002; private Intent imageCaptureintent; private boolean isActivityAvailable; Context con
public class CameraHandler {
public static int IMAGE_PIC_CODE = 1000, CROP_CAMERA_REQUEST = 1001,
CROP_GALLARY_REQUEST = 1002;
private Intent imageCaptureintent;
private boolean isActivityAvailable;
Context context;
private List<ResolveInfo> cameraList;
List<Intent> cameraIntents;
Uri outputFileUri;
Intent galleryIntent;
Uri selectedImageUri;
private String cameraImageFilePath, absoluteCameraImagePath;
Bitmap bitmap;
ImageView ivPicture;
String ivPicture1 = String.valueOf(ivPicture);
public CameraHandler(Context context) {
this.context = context;
setFileUriForCameraImage();
}
public void setIvPicture(ImageView ivPicture) {
this.ivPicture = ivPicture;
}
private void setFileUriForCameraImage() {
File root = new File(Environment.getExternalStorageDirectory()
+ File.separator + "MyDir" + File.separator);
root.mkdirs();
final String fname = "image.jpg";
final File sdImageMainDirectory = new File(root, fname);
absoluteCameraImagePath = sdImageMainDirectory.getAbsolutePath();
outputFileUri = Uri.fromFile(sdImageMainDirectory);
}
public String getCameraImagePath() {
return cameraImageFilePath;
}
private void getActivities() {
imageCaptureintent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
PackageManager packageManager = ((Activity) context)
.getPackageManager();
this.cameraList = packageManager.queryIntentActivities(
imageCaptureintent, 0);
if (cameraList.size() > 0) {
isActivityAvailable = true;
} else {
isActivityAvailable = false;
}
}
private void fillCameraActivities() {
getActivities();
if (!isActivityAvailable) {
return;
}
cameraIntents = new ArrayList<Intent>();
for (ResolveInfo resolveInfo : cameraList) {
Intent intent = new Intent(imageCaptureintent);
intent.setPackage(resolveInfo.activityInfo.packageName);
intent.setComponent(new ComponentName(
resolveInfo.activityInfo.packageName,
resolveInfo.activityInfo.name));
intent.putExtra(MediaStore.EXTRA_OUTPUT, outputFileUri);
cameraIntents.add(intent);
}
}
private void fillGallaryIntent() {
galleryIntent = new Intent();
galleryIntent.setType("image/*");
galleryIntent.setAction(Intent.ACTION_PICK);
}
public void showView() {
fillCameraActivities();
fillGallaryIntent();
// Chooser of filesystem options.
final Intent chooserIntent = Intent.createChooser(galleryIntent,
"Select Source");
// Add the camera options.
chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS,
cameraIntents.toArray(new Parcelable[] {}));
((Activity) context).startActivityForResult(chooserIntent,
IMAGE_PIC_CODE);
}
private Bitmap getBitmapFromURL(String src) {
final BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
BitmapFactory.decodeFile(src, options);
// Calculate inSampleSize
options.inSampleSize = calculateInSampleSize(options, 192, 256);
// Decode bitmap with inSampleSize set
options.inJustDecodeBounds = false;
return BitmapFactory.decodeFile(src, options);
}
private int calculateInSampleSize(BitmapFactory.Options options,
int reqWidth, int reqHeight) {
// Raw height and width of image
final int height = options.outHeight;
final int width = options.outWidth;
int inSampleSize = 1;
if (height > reqHeight || width > reqWidth) {
final int halfHeight = height / 2;
final int halfWidth = width / 2;
// Calculate the largest inSampleSize value that is a power of 2
// and keeps both
// height and width larger than the requested height and width.
while ((halfHeight / inSampleSize) > reqHeight
&& (halfWidth / inSampleSize) > reqWidth) {
inSampleSize *= 2;
}
}
return inSampleSize;
}
public String getRealPathFromURI(Context context, Uri contentUri) {
Cursor cursor = null;
try {
String[] proj = { MediaStore.Images.Media.DATA };
cursor = context.getContentResolver().query(contentUri, proj, null,
null, null);
int column_index = cursor
.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
return cursor.getString(column_index);
} finally {
if (cursor != null) {
cursor.close();
}
}
}
public void onResult(int requestCode, int resultCode, Intent data) {
if (resultCode == Activity.RESULT_OK) {
if (requestCode == IMAGE_PIC_CODE) {
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.ICE_CREAM_SANDWICH) {
Log.v("", "ics");
} else {
Log.v("", " not ics");
}
boolean isCamera;
if (data == null) {
isCamera = true;
} else {
final String action = data.getAction();
if (action == null) {
isCamera = false;
} else {
isCamera = action
.equals(MediaStore.ACTION_IMAGE_CAPTURE);
}
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.ICE_CREAM_SANDWICH
&& action != null) {
Log.v("", "action = null");
isCamera = true;
} else {
Log.v("", "action is not null");
}
}
if (isCamera) {
selectedImageUri = outputFileUri;
onResultCameraOK();
} else {
selectedImageUri = data == null ? null : data.getData();
onResultGalleryOK();
}
}
}
if (requestCode == CROP_CAMERA_REQUEST) {
if (resultCode == Activity.RESULT_OK) {
resultOnCropOkOfCamera(data);
} else if (resultCode == Activity.RESULT_CANCELED) {
resultOnCroppingCancel();
}
}
if (requestCode == CROP_GALLARY_REQUEST) {
if (resultCode == Activity.RESULT_OK) {
resultOnCropOkOfGallary(data);
} else if (resultCode == Activity.RESULT_CANCELED) {
resultOnCroppingCancel();
}
}
}
private void doCropping(int code) {
Log.v("", this.cameraImageFilePath);
Intent cropIntent = new Intent("com.android.camera.action.CROP");
cropIntent.setDataAndType(selectedImageUri, "image/*");
cropIntent.putExtra("crop", "true");
cropIntent.putExtra("aspectX", 1);
cropIntent.putExtra("aspectY", 1);
cropIntent.putExtra("outputX", 256);
cropIntent.putExtra("outputY", 256);
cropIntent.putExtra("return-data", true);
try {
((Activity) context).startActivityForResult(cropIntent, code);
} catch (Exception e) {
}
}
private void onResultCameraOK() {
this.cameraImageFilePath = absoluteCameraImagePath;
this.bitmap = getBitmapFromURL(cameraImageFilePath);
doCropping(CROP_CAMERA_REQUEST);
}
private void onResultGalleryOK() {
this.cameraImageFilePath = selectedImageUri.toString();
this.bitmap = getBitmapFromURL(getRealPathFromURI(context,
selectedImageUri));
doCropping(CROP_GALLARY_REQUEST);
}
private void resultOnCropOkOfCamera(Intent data) {
this.bitmap = data.getExtras().getParcelable("data");
Log.v("", "cameraImageFilePath on crop camera ok => "
+ cameraImageFilePath);
setImageProfile();
}
private void resultOnCropOkOfGallary(Intent data) {
Bundle extras2 = data.getExtras();
this.bitmap = extras2.getParcelable("data");
setImageProfile();
}
private void resultOnCroppingCancel() {
Log.v("", "do cropping cancel" + cameraImageFilePath);
setImageProfile();
}
private void setImageProfile() {
Log.v("", "cameraImagePath = > " + cameraImageFilePath);
if (ivPicture != null) {
if (bitmap != null) {
ivPicture.setImageBitmap(bitmap);
String ivPicture =ConDetTenthFragment.getStringImage(bitmap);
Log.d("byte code -", ivPicture);
/*Intent i = new Intent(context, ImageUpload.class);
String getrec = ivPicture;
//Create the bundle
Bundle bundle = new Bundle();
//Add your data to bundle
bundle.putString("moin", getrec);
//Add the bundle to the intent
i.putExtras(bundle);
//Fire that second activity
context.startActivity(i);*/
} else {
Log.v("", "bitmap is null");
}
}
}
public String getVar1() {
return ivPicture1;
}
/*public String getStringImage(Bitmap bmp){
ByteArrayOutputStream baos = new ByteArrayOutputStream();
bmp.compress(Bitmap.CompressFormat.JPEG, 100, baos);
byte[] imageBytes = baos.toByteArray();
String encodedImage = Base64.encodeToString(imageBytes, Base64.DEFAULT);
return encodedImage;
}*/
}
出现问题的原因是您正在将
nullcontextCameraHandlercondenttenthFragmentpublic class ConDetTenthFragment extends Fragment {
Context context;
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
context = getAcitivity();
cameraHandler = new CameraHandler(context);
....
}
}
public class ConDetTenthFragment extends Fragment {
Context context = getActivity();
...
}
上下文活动CameraHandlerpublic class ConDetTenthFragment extends Fragment {
Context context;
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
context = getAcitivity();
cameraHandler = new CameraHandler(context);
....
}
}
public class ConDetTenthFragment extends Fragment {
Context context = getActivity();
...
}
创建片段时，还会创建
context=getActivity（）getActivity（）nullPackageManager PackageManager=（（活动）上下文）。getPackageManager（）生成错误<代码>上下文public class ConDetTenthFragment extends Fragment {
Context context = getActivity();
...
}