sharing image with whatsapp in android

问题

I have image in assets folder and need to share it with whatsapp application

I tried this code , it keeps give me sharing failed try again ! what's wrong ?!

         Intent share = new Intent(Intent.ACTION_SEND);
      share.setType("image/*");
      share.setPackage("com.whatsapp"); 
    //  share.putExtra(Intent.EXTRA_STREAM, Uri.fromFile(new File("file:///assets/epic/adv.png"))); 
      share.putExtra(Intent.EXTRA_STREAM, Uri.parse("file:///assets/epic/adv.png"));
      this.startActivity(Intent.createChooser(share, "share_via"));

回答1:

You have several problems.

First, file:///assets/ is not a valid Uri on any version of Android. Your own application can refer to its own assets via file:///android_asset/.

Second, only you can access your own assets via file:///android_asset/ -- you cannot pass such a Uri to third-party apps. Either copy the file from assets into internal storage and use FileProvider, or you can try my StreamProvider and try to share the data straight out of assets/.

Third, there is no guarantee that com.whatsapp exists on the device, or that com.whatsapp will support ACTION_SEND of file:/// Uri values with a MIME type of image/*, and so you may crash with an ActivityNotFoundException.

Fourth, the user might want to share this image via some other means than WhatsApp. Please allow the user to share where the user wants, by removing the setPackage() call from your Intent.

回答2:

This code for share image via whatsapp worked fine for me .

public void shareImageWhatsApp() {

    Bitmap adv = BitmapFactory.decodeResource(getResources(), R.drawable.adv);
    Intent share = new Intent(Intent.ACTION_SEND);
    share.setType("image/jpeg");
    ByteArrayOutputStream bytes = new ByteArrayOutputStream();
    adv.compress(Bitmap.CompressFormat.JPEG, 100, bytes);
    File f = new File(Environment.getExternalStorageDirectory()
            + File.separator + "temporary_file.jpg");
    try {
        f.createNewFile();
        new FileOutputStream(f).write(bytes.toByteArray());
    } catch (IOException e) {
        e.printStackTrace();
    }
    share.putExtra(Intent.EXTRA_STREAM,
            Uri.parse( Environment.getExternalStorageDirectory()+ File.separator+"temporary_file.jpg"));
    if(isPackageInstalled("com.whatsapp",this)){
          share.setPackage("com.whatsapp"); 
          startActivity(Intent.createChooser(share, "Share Image"));

    }else{

        Toast.makeText(getApplicationContext(), "Please Install Whatsapp", Toast.LENGTH_LONG).show();
    }

}

private boolean isPackageInstalled(String packagename, Context context) {
    PackageManager pm = context.getPackageManager();
    try {
        pm.getPackageInfo(packagename, PackageManager.GET_ACTIVITIES);
        return true;
    } catch (NameNotFoundException e) {
        return false;
    }
}

回答3:

This worked for me

Bitmap imgBitmap=BitmapFactory.decodeResource(getResources(),R.drawable.image);
String imgBitmapPath= MediaStore.Images.Media.insertImage(getContentResolver(),imgBitmap,"title",null);
Uri imgBitmapUri=Uri.parse(imgBitmapPath);
Intent shareIntent=new Intent(Intent.ACTION_SEND);
shareIntent.setType("image/*");
shareIntent.putExtra(Intent.EXTRA_STREAM,imgBitmapUri);
startActivity(Intent.createChooser(shareIntent,"share image using"));

来源：https://stackoverflow.com/questions/24758375/sharing-image-with-whatsapp-in-android

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android

image