問題記錄：Android設定寄送夾帶附件的E-mail時附件無法使用

問題起因：

基本上使用常見的方法如下

Intent i = new Intent(Intent.ACTION_SEND);

i.setType("image/jpeg");

i.putExtra(Intent.EXTRA_EMAIL  , new String[]{sendTarget});

i.putExtra(Intent.EXTRA_SUBJECT, sendSubject);

i.putExtra(Intent.EXTRA_TEXT   , sendText);

i.putExtra(Intent.EXTRA_STREAM, Uri.parse("file://"+ filePath));

try {

     curActivity.startActivity(Intent.createChooser(i, "Please select Email client"));

} catch (android.content.ActivityNotFoundException ex) {

    Toast.makeText(curActivity, "There are no email clients installed.", Toast.LENGTH_SHORT).show();

}

問題出於我給的是Internal Storage的路徑，所以基本上當其它的應用程式要取用檔案時有有存取權限問題

解決方式:

copy一份到External Storage再用copy檔的路徑即可

聽起來很簡單  但我還是被卡了

File externalPicPath = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES);

File dstFile = new File(externalPicPath, "picture.png");

try{

    FileInputStream in = new FileInputStream(filePath);

    FileOutputStream out = new FileOutputStream(dstFile);

    byte[] buf = new byte[1024];

    int len;

    while ((len = in.read(buf)) > 0) {

        out.write(buf, 0, len);

    }

    in.close();

    out.close();

}

catch(IOException e)

{

    Toast.makeText(curActivity, "I/O Error.", Toast.LENGTH_SHORT).show();

     return;

}