Develop Reference

i have image view page and i want to add a button to share image from ImageView

i tried the code in ViewPictureActivity.java to share image but i got many errors Below:
public class ViewPictureActivity extends AppCompatActivity {
private static final String KEY_PICTURES = "pics";
private static final String KEY_REQUESTED_POS = "requestedPos";
private ArrayList<Integer> imageIDs;
private int currentPosition = -1;
private ImageView galleryPicture;
Bitmap bitmap;
private File imagePath;
#SuppressWarnings("unchecked")
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_view_picture);
initToolbar();
galleryPicture = (ImageView) findViewById(R.id.galleryImage);
imageIDs = (ArrayList<Integer>) getIntent().getSerializableExtra(KEY_PICTURES);
currentPosition = getIntent().getIntExtra(KEY_REQUESTED_POS, 0);
changePicture(currentPosition);
final ImageButton previousItemButton = findViewById(R.id.previous_item_button);
previousItemButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View v1) {
if (imageIDs != null && imageIDs.size() > 0 && currentPosition > 0) {
changePicture(--currentPosition);
}
}
});
final ImageButton nextItemButton = findViewById(R.id.next_item_button);
nextItemButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View v1) {
if (imageIDs != null && imageIDs.size() > 0 && imageIDs.size() > currentPosition + 1) {
changePicture(++currentPosition);
} else {
Toast.makeText(getApplicationContext(), "No more pictures", Toast.LENGTH_SHORT).show();
}
}
});
final ImageButton btnshare = findViewById(R.id.btnShare);
btnshare.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
OutputStream output;
FrameLayout fm = (FrameLayout) findViewById(R.id.frm2);
Calendar cal = Calendar.getInstance();
Bitmap bitmap = Bitmap.createBitmap(fm.getWidth(),
fm.getHeight(), Config.ARGB_8888);
Canvas b = new Canvas(bitmap);
fm.draw(b);
File filepath = Environment.getExternalStorageDirectory();
File dir = new File(filepath.getAbsolutePath()
+ "/D_Envitation/");
dir.mkdir();
String imagename = "image" + cal.getTimeInMillis() + ".png";
// Create a name for the saved image
File file = new File(dir, imagename);
// Show a toast message on successful save
Toast.makeText(ViewPictureActivity.this, "Image Saved to SD Card",
Toast.LENGTH_SHORT).show();
try {
output = new FileOutputStream(file);
// Compress into png format image from 0% - 100%
bitmap.compress(Bitmap.CompressFormat.PNG, 100, output);
output.flush();
output.close();
}
catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Uri screenshotUri = Uri.fromFile(file);
Intent share = new Intent(Intent.ACTION_SEND);
share.setType("image/png");
share.putExtra(Intent.EXTRA_STREAM, screenshotUri);
startActivity(Intent.createChooser(share, "Share With"));
}
});
}
private void initToolbar() {
if (getResources().getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT) {
Toolbar displayActToolbar = findViewById(R.id.simple_toolbar);
setSupportActionBar(displayActToolbar);
}
}
private void changePicture(int arrayPosition) {
//galleryPicture.setLayoutParams(new LinearLayout.LayoutParams(500,500));
//galleryPicture.setScaleType(ImageView.ScaleType.CENTER_CROP);
galleryPicture.setImageResource(imageIDs.get(arrayPosition));
}
// starter - to control passing and reading Extra in the same class
public static void start(Context context, ArrayList<Integer> imageIDs, int requestedPos) {
Intent starter = new Intent(context, ViewPictureActivity.class);
starter.putExtra(KEY_PICTURES, imageIDs);
starter.putExtra(KEY_REQUESTED_POS, requestedPos);
context.startActivity(starter);
//Log.d("ViewPictureActivity", "after start");
}
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.hal9000.gridgallery, PID: 23639
android.os.FileUriExposedException: file:///storage/emulated/0/D_Envitation/image1558562487343.png exposed beyond app through ClipData.Item.getUri()
at android.os.StrictMode.onFileUriExposed(StrictMode.java:1958)
at android.net.Uri.checkFileUriExposed(Uri.java:2348)
at android.content.ClipData.prepareToLeaveProcess(ClipData.java:941)
at android.content.Intent.prepareToLeaveProcess(Intent.java:9735)
at android.content.Intent.prepareToLeaveProcess(Intent.java:9741)
at android.content.Intent.prepareToLeaveProcess(Intent.java:9720)
at android.app.Instrumentation.execStartActivity(Instrumentation.java:1609)
at android.app.Activity.startActivityForResult(Activity.java:4472)
at android.support.v4.app.FragmentActivity.startActivityForResult(FragmentActivity.java:767)
at android.app.Activity.startActivityForResult(Activity.java:4430)
at android.support.v4.app.FragmentActivity.startActivityForResult(FragmentActivity.java:754)
at android.app.Activity.startActivity(Activity.java:4791)
at android.app.Activity.startActivity(Activity.java:4759)
at com.hal9000.gridgallery.ViewPictureActivity$3.onClick(ViewPictureActivity.java:139)
at android.view.View.performClick(View.java:6256)
at android.view.View$PerformClick.run(View.java:24701)
at android.os.Handler.handleCallback(Handler.java:789)
at android.os.Handler.dispatchMessage(Handler.java:98)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6541)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:767)

you can share an image with another app without saved into mobile
public void OnClickShare(View view){
Bitmap bitmap =getBitmapFromView(YourView);
try {
File file = new File(this.getExternalCacheDir(),"logicchip.png");
FileOutputStream fOut = new FileOutputStream(file);
bitmap.compress(Bitmap.CompressFormat.PNG, 100, fOut);
fOut.flush();
fOut.close();
file.setReadable(true, false);
//start share image with intent
final Intent intent = new Intent(android.content.Intent.ACTION_SEND);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
intent.putExtra(Intent.EXTRA_STREAM, Uri.fromFile(file));
intent.setType("image/png");
startActivity(Intent.createChooser(intent, "Share image via"));
} catch (Exception e) {
e.printStackTrace();
}
}
and this method to get Bitmap from ImageView
// can replace parmeter with ImageView in your state
private Bitmap getBitmapFromView(View view) {
Bitmap returnedBitmap = Bitmap.createBitmap(view.getWidth(), view.getHeight(),Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(returnedBitmap);
//or use #getDrawable with ImageView
Drawable bgDrawable =view.getBackground();
if (bgDrawable!=null) {
//has background drawable, then draw it on the canvas
bgDrawable.draw(canvas);
} else{
//does not have background drawable, then draw white background on the canvas
canvas.drawColor(Color.WHITE);
}
view.draw(canvas);
return returnedBitmap;
}
I hope this help and don't forget to read the comment in the code to know what you want

Android Share sliding image on whatsapp using intent from viewPager using glide

I am working on online gallery app, in a fragment Dialog images from specific displaying as a viewPager.
But the main problem i am unable to share a particular image on whatsapp because I am finding difficulty to get imageViewPreview.
Here is the code for loading image in viewPager
public class MyViewPagerAdapter extends PagerAdapter {
private LayoutInflater layoutInflater;
public MyViewPagerAdapter() {
}
#Override
public Object instantiateItem(ViewGroup container, int position) {
layoutInflater = (LayoutInflater) getActivity().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View view = layoutInflater.inflate(R.layout.image_fullscreen_preview, container, false);
final ImageView imageViewPreview = (ImageView) view.findViewById(R.id.image_preview);
Image image = images.get(position);
Glide.with(getActivity()).load(image.getLarge())
.thumbnail(0.5f)
.crossFade()
.diskCacheStrategy(DiskCacheStrategy.ALL)
.into(imageViewPreview);
container.addView(view);
return view;
}
Now i am trying to get image from imageViewPreview from
whatsappShare.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Log.e(TAG, "Click working");
//shareImage();
// ImageView imageWhatsapp = (ImageView) view.findViewById(R.id.image_preview);
Uri bmpUri = getLocalBitmapUri(imageViewPreview);
if (bmpUri != null) {
// Construct a ShareIntent with link to image
Intent shareIntent = new Intent();
shareIntent.setAction(Intent.ACTION_SEND);
shareIntent.putExtra(Intent.EXTRA_STREAM, bmpUri);
shareIntent.setType("image/*");
shareIntent.setPackage("com.whatsapp");
shareIntent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
// Launch sharing dialog for image
startActivity(Intent.createChooser(shareIntent, "Share Image"));
} else {
// ...sharing failed, handle error
Log.e(TAG, "ERROR" + bmpUri);
}
}
});
My getLocalBitmapUri() methos is as follow:
public Uri getLocalBitmapUri(ImageView imageViewPreview) {
// Extract Bitmap from ImageView drawable
Drawable drawable = imageViewPreview.getDrawable();
Bitmap bmp = null;
if (drawable instanceof BitmapDrawable) {
bmp = ((BitmapDrawable) imageViewPreview.getDrawable()).getBitmap();
} else {
return null;
}
// Store image to default external storage directory
Uri bmpUri = null;
try {
File file = new File(Environment.getExternalStoragePublicDirectory(
Environment.DIRECTORY_DOWNLOADS), "share_image_" + System.currentTimeMillis() + ".png");
file.getParentFile().mkdirs();
FileOutputStream out = new FileOutputStream(file);
Log.e(TAG, "popopo: " + file);
bmp.compress(Bitmap.CompressFormat.PNG, 90, out);
out.close();
bmpUri = Uri.fromFile(file);
} catch (IOException e) {
e.printStackTrace();
}
return bmpUri;
}
But the problem is I am getting **NULL** from getLocalBitmapUri() method.
please guide me the get imageViewPreview.

i had faced sacreate this method, few time ago i used it and work, i forgot who given this snippet.
public Bitmap drawableToBitmap (Drawable drawable) {
Bitmap bitmap = null;
if (drawable instanceof BitmapDrawable) {
BitmapDrawable bitmapDrawable = (BitmapDrawable) drawable;
if(bitmapDrawable.getBitmap() != null) {
return bitmapDrawable.getBitmap();
}
}
if(drawable.getIntrinsicWidth() <= 0 || drawable.getIntrinsicHeight() <= 0) {
bitmap = Bitmap.createBitmap(1, 1, Bitmap.Config.ARGB_8888); // Single color bitmap will be created of 1x1 pixel
} else {
bitmap = Bitmap.createBitmap(drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight(), Bitmap.Config.ARGB_8888);
}
Canvas canvas = new Canvas(bitmap);
drawable.setBounds(0, 0, canvas.getWidth(), canvas.getHeight());
drawable.draw(canvas);
return bitmap;
}
at your getLocalBitmapUri()
public Uri getLocalBitmapUri(ImageView imageViewPreview) {
// Extract Bitmap from ImageView drawable
Drawable drawable = imageViewPreview.getDrawable();
Bitmap bmp = drawableToBitmap(imageViewPreview);
//...................
try {
File file = new File(Environment.getExternalStoragePublicDirectory(
Environment.DIRECTORY_DOWNLOADS), "share_image_" + System.currentTimeMillis() + ".png");
file.getParentFile().mkdirs();
if(!file.exist()) file.createNewFile();
//..............

Set wallpaper fit to screen error for bitmap drawable

I am trying to make wallpaper fit to screen in above API 23, but somehow I am getting an error for bitmap drawable. Error is "android.graphics.drawable.TransitionDrawable cannot be cast to android.graphics.drawable.BitmapDrawable".
Same code I have for API 22 and it is working perfect. Help me out.
Here is my code.
case R.id.action_wallpaper:
progressBar.setVisibility(View.VISIBLE);
BitmapDrawable drawable1 = (BitmapDrawable) image.getDrawable();
temp = drawable1.getBitmap();
// Drawable d = image.getDrawable();
String s = "image";
// temp = ((BitmapDrawable)d).getBitmap();
FileOutputStream out =
null;
try {
out = openFileOutput(s, Context.MODE_PRIVATE);
} catch (FileNotFoundException e) {
e.printStackTrace();
}
temp.compress(Bitmap.CompressFormat.PNG, 90, out);
setWallpaper();
progressBar.setVisibility(View.GONE);
break;
void setWallpaper() {
BitmapDrawable drawable = (BitmapDrawable) image.getDrawable();
// Bitmap bitmap = drawable.getBitmap();
Bitmap icon = drawable.getBitmap();
ByteArrayOutputStream bytes = new ByteArrayOutputStream();
icon.compress(Bitmap.CompressFormat.JPEG, 100, bytes);
File f = new File(Environment.getExternalStorageDirectory()
+ File.separator + "wallpaper.jpg");
try {
f.createNewFile();
FileOutputStream fo = new FileOutputStream(f);
fo.write(bytes.toByteArray());
} catch (IOException e) {
e.printStackTrace();
}
Toast.makeText(getApplicationContext(), "Wallpaper Set",
Toast.LENGTH_SHORT).show();
Thread th = new Thread() {
public void run() {
// temp = image.getDrawingCache();
DisplayMetrics metrics = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(metrics);
int height = metrics.heightPixels;
int width = metrics.widthPixels;
// Bitmap tempbitMap =
// BitmapFactory.decodeResource(getResources(), R.drawable.img);
Bitmap bitmap = Bitmap.createScaledBitmap(temp, width, height,
true);
WallpaperManager wallpaperManager = WallpaperManager
.getInstance(WallpaperActivity.this);
wallpaperManager.setWallpaperOffsetSteps(1, 1);
wallpaperManager.suggestDesiredDimensions(width, height);
try {
wallpaperManager.setBitmap(bitmap);
} catch (IOException e) {
e.printStackTrace();
}
handler.post(new Runnable() {
#Override
public void run() {
}
});

How to save an image attached to the image view?

I am using a Glide library for loading remote URLs into ImageView's.
I want to save the image from this ImageView to gallery. (I don't want to make another network call again to download the same image).
How we can achieve this?

Glide.with(yourApplicationContext))
.load(youUrl)
.asBitmap()
.into(new SimpleTarget<Bitmap>(myWidth, myHeight) {
#Override
public void onResourceReady(Bitmap bitmap, GlideAnimation anim) {
//set bitmap to imageview and save
}
};

BitmapDrawable drawable = (BitmapDrawable) imageView.getDrawable();
Bitmap bitmap = drawable.getBitmap();
ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
Bitmap scaledBitmap = Bitmap.createScaledBitmap(bitmap, 200, 200, false);
scaledBitmap.compress(Bitmap.CompressFormat.JPEG, 60, byteArrayOutputStream);
String fileName = "image.jpeg";
File file = new File("your_directory_path/"
+ fileName);
try {
file.createNewFile();
// write the bytes in file
FileOutputStream fileOutputStream = new FileOutputStream(file);
fileOutputStream.write(byteArrayOutputStream.toByteArray());
// remember close the FileOutput stream
fileOutputStream.close();
ToastHelper.show(getString(R.string.qr_code_save));
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
ToastHelper.show("Error");
}
Note : If your drawble is not always an instanceof BitmapDrawable
Bitmap bitmap;
if (mImageView.getDrawable() instanceof BitmapDrawable) {
bitmap = ((BitmapDrawable) mImageView.getDrawable()).getBitmap();
} else {
Drawable d = mImageView.getDrawable();
bitmap = Bitmap.createBitmap(d.getIntrinsicWidth(), d.getIntrinsicHeight(), Bitmap.Config.ARGB_8888);
}
Try this

I haven't try this way. But i think this match your problem. Put this code on onBindViewHolder of your RecyclerView adapter.
Glide.with(yourApplicationContext))
.load(youUrl)
.asBitmap()
.into(new SimpleTarget<Bitmap>(myWidth, myHeight) {
#Override
public void onResourceReady(Bitmap bitmap, GlideAnimation anim) {
//Set bitmap to your ImageView
imageView.setImageBitmap(bitmap);
viewHolder.saveButton.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View arg0) {
//Save bitmap to gallery
saveToGallery(bitmap);
}
});
}
};

This might help you
public void saveBitmap(ImageView imageView) {
Bitmap bitmap = ((GlideBitmapDrawable) imageView.getDrawable()).getBitmap();
String root = Environment.getExternalStorageDirectory().toString();
File myDir = new File(root + "/My Images");
myDir.mkdirs();
Random generator = new Random();
int n = 10000;
n = generator.nextInt(n);
String fname = "Image-" + n + ".jpg";
File file = new File(myDir, fname);
if (file.exists()) file.delete();
try {
FileOutputStream out = new FileOutputStream(file);
bitmap.compress(Bitmap.CompressFormat.JPEG, 90, out);
out.flush();
out.close();
} catch (Exception ex) {
//ignore
}
}

the type getIntent() is undefined for adapter

I am getting a byteArray from another activity via Intent like this:
if (view == null) {
view = new ImageView(mContext);
}
Bundle extras = getIntent().getExtras();
byte[] byteArray = extras.getByteArray("picture");
Bitmap default_b = BitmapFactory.decodeByteArray(byteArray, 0, byteArray.length);
view.setImageBitmap(default_b);
view.setImageResource(drawables.get(position));
view.setScaleType(ImageView.ScaleType.CENTER_CROP);
view.setLayoutParams(new android.widget.GridView.LayoutParams(70, 70));
view.setTag(String.valueOf(position));
return view;
But I get the error that getIntent() is undefined for the type GridViewAdapter (this is in my base adapter class for a gridView)
I create the intent here:
Intent intent = new Intent(v.getContext(), GridViewAdapter.class);
intent.putExtra("picture", byteArray);
v.getContext().startActivity(intent);
How can I fix this error?
ADDED:
Here is my full part where I create the intent:
Log.d("AppInfoAdapter", "Data Set To Display");
addCheckbox
.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if (addCheckbox.isChecked()) {
System.out.println("Checked");
PackageManager pm = mContext.getPackageManager();
Drawable icon = null;
try {
icon = pm
.getApplicationIcon(entry.activityInfo.packageName);
} catch (NameNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Drawable default_icon = pm.getDefaultActivityIcon();
if (icon instanceof BitmapDrawable
&& default_icon instanceof BitmapDrawable) {
BitmapDrawable icon_bd = (BitmapDrawable) icon;
Bitmap icon_b = icon_bd.getBitmap();
BitmapDrawable default_bd = (BitmapDrawable) pm
.getDefaultActivityIcon();
Bitmap default_b = default_bd.getBitmap();
if (icon_b == default_b) {
// It's the default icon
scaleDownBitmap(default_b, 100, v.getContext());
Log.d("AppInfoAdapter", "Scale Bitmap Chosen");
ByteArrayOutputStream stream = new ByteArrayOutputStream();
default_b.compress(Bitmap.CompressFormat.PNG, 100, stream);
byte[] byteArray = stream.toByteArray();
Log.d("AppInfoAdapter", "Scale Bitmap to Array");
Intent intent = new Intent(v.getContext(), GridViewAdapter.class);
intent.putExtra("picture", byteArray);
v.getContext().startActivity(intent);
Log.d("AppInfoAdapter", "Intent started to send Bitmap");
}
}
} else {
System.out.println("Un-Checked");
}
}
});

Pass your Activity context to the Adapter constructor
there you can access your intent like this
((Activity)mContext).getIntent()

getIntent() is used to get the Intent used to start an Activity. Since you aren't in an Activity then there is no Intent to "get" and getIntent(), as it says, is not a function of the Adapter class.
Use that code in the Activity that calls the Adapter class and pass the data needed to that class

Here we go:
Intent intent = ((Activity) context).getIntent();
int value = intent.getIntExtra("myvalue", 0);