如何通过Messenger发送来自应用的图片?
我想通过Messenger从我的应用发送图像。我一直在寻找,并且找到了适用于WhatsApp的答案。当我尝试将“ com.whatsapp”更改为“
com.facebook.orca”时,它停止工作。这是我的代码:
public void shareImageMessenger() { Bitmap adv = BitmapFactory.decodeResource(getResources(), R.drawable.koza);
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_1.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_1.jpg"));
share.setPackage("com.facebook.orca");
startActivity(Intent.createChooser(share, "Share Image"));
}
回答:
在此花费大量时间后:
ImageView imageView = findViewById(R.id.image);Bitmap bitmap = ((BitmapDrawable) imageView.getDrawable()).getBitmap();
//save the image now:
saveImage(bitmap);
//share it
send();
private static void saveImage(Bitmap finalBitmap) { String root = Environment.getExternalStorageDirectory().getAbsolutePath();
File myDir = new File(root + "/saved_images");
Log.i("Directory", "==" + myDir);
myDir.mkdirs();
String fname = "Image-test" + ".jpg";
File file = new File(myDir, fname);
if (file.exists()) file.delete();
try {
FileOutputStream out = new FileOutputStream(file);
finalBitmap.compress(Bitmap.CompressFormat.JPEG, 90, out);
out.flush();
out.close();
} catch (Exception e) {
e.printStackTrace();
}
}
public void send() { try {
File myFile = new File("/storage/emulated/0/saved_images/Image-test.jpg");
MimeTypeMap mime = MimeTypeMap.getSingleton();
String ext = myFile.getName().substring(myFile.getName().lastIndexOf(".") + 1);
String type = mime.getMimeTypeFromExtension(ext);
Intent sharingIntent = new Intent("android.intent.action.SEND");
sharingIntent.setType(type);
sharingIntent.putExtra("android.intent.extra.STREAM", Uri.fromFile(myFile));
startActivity(Intent.createChooser(sharingIntent, "Share using"));
} catch (Exception e) {
Toast.makeText(getBaseContext(), e.getMessage(), Toast.LENGTH_SHORT).show();
}
}
现在,发送后,如果您不想在存储中保存图像,可以将其删除。检查其他链接可以做到这一点。
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