我已经在我的应用程序中从图库中实现图像选择器选项。从照相机中选择图像或从相机拍摄照片后,我将其保存在共享的首选项中,以便用户在他们再次返回到此活动时可以看到该图像。现在我想在另一个活动中使用该图像。但我不知道我该如何将这个想象从这个恐怖分子阶层传递给主要活动。更改图像通过共享的优先从一个活动到另一个android
这是我的图像选择器的代码,并保持它共享Prefelents。
public class ViewProfileFragment extends Fragment implements View.OnClickListener{
private ImageView image;
private int REQUEST_CAMERA = 0, SELECT_FILE = 1;
String userChoosenTask;
Bitmap bm;
String currentPhotoPath;
Uri uri;
private String UPLOAD_URL = Constants.HTTP.PHOTO_URL;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
// Inflate the layout for this fragment
View rootView = inflater.inflate(R.layout.fragment_view_profile, container, false);
image=(ImageView)rootView.findViewById(R.id.profile_pic);
saveData();
return rootView;
}
public void saveData(){
.....
if (results.size() > 0) {
......
SharedPreferences preferences =
PreferenceManager.getDefaultSharedPreferences(getActivity());
String mImageUri = preferences.getString("image", null);
if (mImageUri != null) {
image.setImageURI(Uri.parse(mImageUri));
System.out.println("imageuri"+Uri.parse(mImageUri));
} else {
Glide.with(this)
.load(Constants.HTTP.PHOTO_URL+mail)
.thumbnail(0.5f)
.override(200,200)
.diskCacheStrategy(DiskCacheStrategy.ALL)
.into(image);
System.out.println(Constants.HTTP.PHOTO_URL+mail);
}
}
private void galleryAddPic() {
Intent mediaScanIntent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
File f = new File(currentPhotoPath);
uri = Uri.fromFile(f);
mediaScanIntent.setData(uri);
this.getActivity().sendBroadcast(mediaScanIntent);
SharedPreferences preferences =
PreferenceManager.getDefaultSharedPreferences(getActivity());
SharedPreferences.Editor editor = preferences.edit();
editor.putString("image", String.valueOf(uri));
editor.commit();
try {
Bitmap bitmap = MediaStore.Images.Media.getBitmap(getActivity().getContentResolver(), uri);
image.setImageBitmap(bitmap);
} catch (IOException e) {
e.printStackTrace();
}
}
private void onCaptureImageResult() {
Bitmap bitmap = getBitmapFromPath(currentPhotoPath, 200, 200);
image.setImageBitmap(bitmap);
compressBitMap(bitmap);
}
private void onSelectFromGalleryResult(Intent data) {
uri = data.getData();
String[] projection = {MediaStore.Images.Media.DATA};
Cursor cursor = getContext().getContentResolver().query(uri, projection, null, null, null);
if (cursor != null) {
int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
currentPhotoPath = cursor.getString(column_index);
uri = Uri.fromFile(new File(currentPhotoPath));
cursor.close();
} else {
currentPhotoPath = uri.getPath();
}
SharedPreferences preferences =
PreferenceManager.getDefaultSharedPreferences(getActivity());
SharedPreferences.Editor editor = preferences.edit();
editor.putString("image", String.valueOf(uri));
editor.commit();
try {
Bitmap bitmap = MediaStore.Images.Media.getBitmap(getActivity().getContentResolver(), uri);
image.setImageBitmap(bitmap);
} catch (IOException e) {
e.printStackTrace();
}
bm = BitmapFactory.decodeFile(currentPhotoPath);
compressBitMap(bm);
}
}
而这正是我想通过使用sharedprefenace
编辑代码
public class MainOptionPage extends AppCompatActivity implements NavigationView.OnNavigationItemSelectedListener{
private ImageView imgProfile;
RealmResults<MyColleagueModel> results;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
....
// Navigation view header
Intent intent = getIntent();
navigationHeader= navigationView.getHeaderView(0);
....
imgProfile = navigationHeader.findViewById(R.id.profile_image);
// load nav menu header data
loadNavHeader();
//setupDrawerContent(navigationView);
navigationView.setNavigationItemSelectedListener(this);
}
private void loadNavHeader() {
GlobalClass globalClass = new GlobalClass();
String mEmail = globalClass.getEmail_info();
Realm profileRealm;
profileRealm = Realm.getDefaultInstance();
results = profileRealm.where(MyColleagueModel.class).equalTo("mail", mEmail).findAll();
//fetching the data
results.load();
// name, website
String name=null;
String profile_image;
byte[] profile_byte = new byte[0];
// if(globalClass.readDatafromStorage().contains("ACTIVATE")) {
name = " ";
if (results.size() > 0) {
name = results.get(0).getName().toString();
}
profile_image = globalClass.getImage_urlpath();
profile_image = globalClass.getImage_urlpath();
SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(this);
String mImageUri = preferences.getString("image", null);
if (mImageUri != null) {
imgProfile.setImageURI(Uri.parse(mImageUri));
System.out.println("imageuri"+Uri.parse(mImageUri));
} else {
Glide.with(this).load(profile_image)
.thumbnail(0.5f)
.override(200, 200)
.diskCacheStrategy(DiskCacheStrategy.ALL)
.into(imgProfile);
Log.d("--LoginPage_NAME--", name);
}
txtName.setText(name);
txtWebsite.setText(mEmail);
Glide.with(this).load(profile_image)
.thumbnail(0.5f)
.override(200,200)
.diskCacheStrategy(DiskCacheStrategy.ALL)
.into(imgProfile);
// TODO: 11/9/17 set bitmap in imageview by removing below comment
}
尝试您已在ViewProfileFragment活性'SharedPreferences偏好= PreferenceManager.getDefaultSharedPreferences(本)做了相同的; String mImageUri = preferences.getString(“image”,null);'@ tamrezh21 – UltimateDevil
您不需要将图像传递给另一个活动,只需执行与从SharedPreference获取图像相同的操作即可。 – RajatN
@VikasTiwari我在主选项中编辑了代码,但仍然没有得到任何图片 – tamrezh21