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Put string url data to bitmap [closed]

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I'm making a wallpaper application. In this full-screen image activity, this activity is getting data from previous activity by intent. Now I want to set the image(that comes from URL) as wallpaper. This code is not working.
public class PhotoFullPopupWindow extends AppCompatActivity {
Activity context;
Bitmap bitmap=null;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.full_screen_image_view);
ImageView fullScreenImageView = findViewById(R.id.FullScreenImageView);
final String url=getIntent().getStringExtra("url");
Glide.with(this)
.load(url)
.into(fullScreenImageView);
context=this;
bitmap = getBitmap(url);
Button setWallpaperButton = findViewById(R.id.setWallpaper);
setWallpaperButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
WallpaperManager wallpaperManager = WallpaperManager.getInstance(context);
try {
wallpaperManager.setBitmap(bitmap);
} catch (IOException ex) {
ex.printStackTrace();
}
}
});
}
public Bitmap getBitmap(String bitmapUrl) {
try {
URL URL = new URL(bitmapUrl);
return BitmapFactory.decodeStream(URL.openConnection().getInputStream());
}
catch(Exception ex) {
return null;
}
}
}

below is the code i used for setting the wallpaper
public void setWallpaper(String url) {
WallpaperManager myWallManager = WallpaperManager.getInstance(getApplicationContext());
Glide.with(this)
.asBitmap()
.load(url)
.into(new SimpleTarget<Bitmap>() {
#Override
public void onResourceReady(Bitmap resource, Transition<? super Bitmap> transition) {
Intent intent = new Intent(Intent.ACTION_ATTACH_DATA);
intent.setDataAndType(getLocalBitmapUri(resource), "image/*");
intent.putExtra("jpg", "image/*");
startActivity(Intent.createChooser(
intent, "Set as:"));
}
private Uri getLocalBitmapUri(Bitmap bmp) {
Uri bmpUri = null;
try {
File file = new File(getExternalFilesDir(Environment.DIRECTORY_PICTURES),
"OP_Wallpaper_" + System.currentTimeMillis() + ".png");
FileOutputStream out = new FileOutputStream(file);
bmp.compress(Bitmap.CompressFormat.PNG, 90, out);
out.close();
bmpUri = Uri.fromFile(file);
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return bmpUri;
}

Try this:
In your first activity, you should save the Bitmap to disk.
Then load it up in the next activity.
Make sure to recycle your bitmap in the first activity to prime it for garbage collection.
In Activity 1:
try {
//Write file
String filename = "bitmap.png";
FileOutputStream stream = this.openFileOutput(filename, Context.MODE_PRIVATE);
bmp.compress(Bitmap.CompressFormat.PNG, 100, stream);
//Cleanup
stream.close();
bmp.recycle();
//Pop intent
Intent in1 = new Intent(this, Activity2.class);
in1.putExtra("image", filename);
startActivity(in1);
} catch (Exception e) {
e.printStackTrace();
}
In Activity 2:
Bitmap bmp = null;
String filename = getIntent().getStringExtra("image");
try {
FileInputStream is = this.openFileInput(filename);
bmp = BitmapFactory.decodeStream(is);
is.close();
} catch (Exception e) {
e.printStackTrace();
}

Screenshot conversion to pdf file in android [duplicate]

This question already has answers here:
How I can convert a bitmap into PDF format in android [closed]
(3 answers)
Closed 2 months ago.
I am trying to convert an activity to pdf format.I have taken a screenshot of the same as a bitmap.PLease help me to convert that sreenshot to the required pdf file.Thank you.
Please provide the code.Thank you.

This is the code I used...
1) MainActivity
public class MainActivity extends Activity {
//Button btn_getpdf;
private LinearLayout linearLayout;
private Bitmap myBitmap;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// btn_getpdf = (Button) findViewById(R.id.button_pdf);
linearLayout = (LinearLayout) findViewById(R.id.linear1);
linearLayout.post(new Runnable() {
public void run() {
//take screenshot
myBitmap = captureScreen(linearLayout);
Toast.makeText(getApplicationContext(), "Screenshot captured..!", Toast.LENGTH_LONG).show();
try {
if (myBitmap != null) {
//save image to SD card
saveImage(myBitmap);
}
Toast.makeText(getApplicationContext(), "Screenshot saved..!", Toast.LENGTH_LONG).show();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
});
}
public Bitmap captureScreen(View v) {
Bitmap screenshot = null;
try {
if (v != null) {
screenshot = Bitmap.createBitmap(v.getMeasuredWidth(), v.getMeasuredHeight(), Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(screenshot);
v.draw(canvas);
}
} catch (Exception e) {
// Log.d("ScreenShotActivity", "Failed to capture screenshot because:" + e.getMessage());
}
return screenshot;
}
public void saveImage(Bitmap bitmap) throws IOException {
ByteArrayOutputStream bytes = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.PNG, 40, bytes);
File f = new File(root.getAbsolutePath() + "/DCIM/Camera/bitmap.jpg");
f.createNewFile();
FileOutputStream fo = new FileOutputStream(f);
fo.write(bytes.toByteArray());
fo.close();
}
}
2)WritePdfActivity
public class WritePdfActivity extends Activity
{
private static String FILE ="DCIM/Camera/GenPdf.pdf";
static Image image;
static ImageView img;
Bitmap bmp;
static Bitmap bt;
static byte[] bArray;
#Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
img=(ImageView)findViewById(R.id.imageView1);
try
{
Document document = new Document();
PdfWriter.getInstance(document, new FileOutputStream(FILE));
document.open();
addImage(document);
document.close();
}
catch (Exception e)
{
e.printStackTrace();
}
}
private static void addImage(DocumentsContract.Document document)
{
try
{
image = Image.getInstance(bArray); ///Here i set byte array..you can do bitmap to byte array and set in image...
}
catch (BadElementException e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
catch (MalformedURLException e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
catch (IOException e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
// image.scaleAbsolute(150f, 150f);
try
{
document.add(image);
} catch (DocumentException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}

Plz try this So question:
How I can convert a bitmap into PDF format in android
pdf-format-in-android/14393561#14393561
or also include itextpdf-5.3.2.jar in your project

#Swagatam Dutta use
File f = new File(Environment.getExternalStorageDirectory().getAbsolutePath() + "/DCIM/Camera/bitmap.jpg");

android activity screenshot how?

Hello Friends i'm making a app with webview
i want to take screenshot of my activity
Currnetly i'm using this code for capture image
public Bitmap takeScreenshot() {
View rootView = findViewById(android.R.id.content).getRootView();
rootView.setDrawingCacheEnabled(true);
return rootView.getDrawingCache();
}
And This for Save
public void saveBitmap(Bitmap bitmap) {
File imagePath = new File(Environment.getExternalStorageDirectory() + "/screenshot.png");
FileOutputStream fos;
try {
fos = new FileOutputStream(imagePath);
bitmap.compress(CompressFormat.JPEG, 100, fos);
fos.flush();
fos.close();
} catch (FileNotFoundException e) {
Log.e("GREC", e.getMessage(), e);
} catch (IOException e) {
Log.e("GREC", e.getMessage(), e);
}
}
It sometime Works and sometime not, i mean ,sometime i can see in gallery screenshot and sometime not
i want to if there is any option to show captured screenshot
Like whhen we press Vol+power button
Main problem is how can i show image when its taken
or know if its taken or not
Thanks in advance

This is a sample approach: save your image -> display result with dialog. And to make it available in Android Gallery, the file path should also be changed:
public void saveBitmap(Bitmap bitmap) {
File path = Environment.getExternalStoragePublicDirectory(
Environment.DIRECTORY_PICTURES);
File imagePath = new File(path, "screenshot.png");//now gallery can see it
FileOutputStream fos;
try {
fos = new FileOutputStream(imagePath);
bitmap.compress(CompressFormat.JPEG, 100, fos);
fos.flush();
fos.close();
displayResult(imagePath.getAbsolutePath())// here you display your result after saving
} catch (FileNotFoundException e) {
Log.e("GREC", e.getMessage(), e);
} catch (IOException e) {
Log.e("GREC", e.getMessage(), e);
}
}
Create another method call displayResult to see the result:
public void displayResult(String imagePath){
//LinearLayOut Setup
LinearLayout linearLayout= new LinearLayout(this);
linearLayout.setOrientation(LinearLayout.VERTICAL);
linearLayout.setLayoutParams(new LayoutParams(
LayoutParams.MATCH_PARENT,
LayoutParams.MATCH_PARENT));
//ImageView Setup
ImageView imageView = new ImageView(this);//you need control the context of Imageview
//Diaglog setup
final Dialog dialog = new Dialog(this);//you need control the context of this dialog
dialog.setContentView(imageView);
imageView.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
dialog.dismiss();
}
});
//Display result
imageView.setImageBitmap(BitmapFactory.decodeFile(imagePath));
dialog.show();
}

Other people have run into issues when trying to get a bitmap from a view's Drawing Cache.
Rather than trying to use the drawing cache, you can instead just get the bitmap directly from the view. Google's DynamicListView example uses the following function to do so.
/** Returns a bitmap showing a screenshot of the view passed in. */
private Bitmap getBitmapFromView(View v) {
Bitmap bitmap = Bitmap.createBitmap(v.getWidth(), v.getHeight(), Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas (bitmap);
v.draw(canvas);
return bitmap;
}

Can we get rootview of all the application on screen in order to takea screen shot in android xamarin

Can we get rootview of all the applications on screen in order to take a screenshot?

You need to Xamarinify that code:
private void CaptureScreen()
{
View rootView = Window.DecorView.RootView;
rootView.DrawingCacheEnabled = true;
Bitmap myBitmap = rootView.DrawingCache;
SaveBitmap(myBitmap); // ...........
}
private void SaveBitmap(Bitmap bitmap)
{
File dir = new Java.IO.File(Android.OS.Environment.GetExternalStoragePublicDirectory(Android.OS.Environment.DirectoryPictures).Path);
if (!dir.Exists()) dir.Mkdirs();
System.IO.Stream fos = new System.IO.FileStream(dir.Path + #"/pic.jpg", System.IO.FileMode.Create);
try
{
bitmap.Compress(
Android.Graphics.Bitmap.CompressFormat.Png, 100, fos);
fos.Flush();
fos.Close();
}
catch (FileNotFoundException e)
{
}
catch (IOException e)
{
}
}
This is far from production ready code but gives you the idea

Try this for get rootview -
getWindow().getDecorView().findViewById(android.R.id.content)
Hope this helps you!!

Android, Saving and loading a bitmap in cache from different activities

I have i bitmap that needs to show in a new activity, so i cahe it and in the opened activity i try to load it but i get a nullPointerException. Here i save the image :
File cacheDir = getBaseContext().getCacheDir();
File f = new File(cacheDir, "pic");
try {
FileOutputStream out = new FileOutputStream(
f);
pic.compress(
Bitmap.CompressFormat.JPEG,
100, out);
out.flush();
out.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
Intent intent = new Intent(
AndroidActivity.this,
OpenPictureActivity.class);
startActivity(intent);
and then in the new activity i try to open it :
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
File cacheDir = getBaseContext().getCacheDir();
File f = new File(cacheDir, "pic");
FileInputStream fis = null;
try {
fis = new FileInputStream(f);
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Bitmap bitmap = BitmapFactory.decodeStream(fis);
ImageView viewBitmap = (ImageView) findViewById(R.id.icon2);
viewBitmap.setImageBitmap(bitmap);
setContentView(R.layout.open_pic_layout);

Just check your code:
ImageView viewBitmap = (ImageView) findViewById(R.id.icon2);
viewBitmap.setImageBitmap(bitmap);
setContentView(R.layout.open_pic_layout);
You have written findViewById() before setting Content View. Its wrong.
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
setContentView(R.layout.open_pic_layout);
// do your operations here
}