Android調用系統本身的分享功能

Intent shareIntent = new Intent(Intent.ACTION_SEND);
shareIntent.setType("text/plain");
shareIntent.putExtra(Intent.EXTRA_SUBJECT,"分享");
shareIntent.putExtra(Intent.EXTRA_TEXT,"快快下載天農助手，天農人自己的助手");
startActivity(Intent.createChooser(shareIntent,"分享到"));