android - twitter での画像とテキストの共有が機能しない

Question

これは以下の私のコードです.FrameLayoutはtwitterでJPEG画像として共有するために使用されます.これは私が試しているコードです.

sharesp=(Spinner)findViewById(R.id.spnrShare);
        sharesp.setAdapter(new MyShAdapter(MainActivity.this, R.layout.rowview, Sharestring));
        sharesp.setOnItemSelectedListener(new OnItemSelectedListener() {

            @Override
            public void onItemSelected(AdapterView<?> parent, View v,
                    int position, long arg3) {
                // TODO Auto-generated method stub
                selectitem=parent.getItemAtPosition(position).toString();
                selecetint=position;

                if(selectitem=="FaceBook" || selecetint==R.drawable.fbbtn){
                       shareFbook();

                }
                else if(selectitem=="Twitter" || selecetint==R.drawable.twitbtn){
                    shareTwitter();

                }
            }

            @Override
            public void onNothingSelected(AdapterView<?> arg0) {
                // TODO Auto-generated method stub

            }
        });


public void shareTwitter(){

         FrameLayout savFrame_layout=(FrameLayout)findViewById(R.id.frame);
        try {
            if(MainActivity.this.mainFrame_layout==null){
            MainActivity.this.mainFrame_layout.setDrawingCacheEnabled(true);
              MainActivity.this.mainFrame_layout.refreshDrawableState();
              MainActivity.this.mainFrame_layout.buildDrawingCache();

            MainActivity.this.bm_ImgFrame = mainFrame_layout.getDrawingCache();

        int i1=100000;
        Random random=new Random();
        i1=random.nextInt(i1);
           MainActivity.fname = "Quick_"+ i1 + ".jpg";

            String pathy=Environment.getExternalStorageDirectory()+File.separator+"/MYAnApps";
            MainActivity.this.rootFile=new File(pathy);

            MainActivity.this.sdImageMainDirectory = new File(MainActivity.this.rootFile + MainActivity.fname);
            FileOutputStream fileOutputStream = new FileOutputStream(MainActivity.this.sdImageMainDirectory);
            bm_ImgFrame.compress(CompressFormat.JPEG, 80, fileOutputStream);

            Uri uri = Uri.parse(MainActivity.this.sdImageMainDirectory.getAbsolutePath());

                Intent intent = new Intent(Intent.ACTION_SEND);
                intent.setType("/*");
                intent.setClassName("com.twitter.android", "com.twitter.android.PostActivity");
                intent.putExtra(Intent.EXTRA_TEXT, "MyAndroidApp: https://play.google.com/store/apps/details?id=com.example.MyApp");
                intent.putExtra(Intent.EXTRA_STREAM, Uri.fromFile(MainActivity.this.sdImageMainDirectory));
                startActivity(intent);            
            }
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }   

    }