调用android自带分享功能，分享图片文字等信息。

/**
 * 调用系统的分享功能
 * Created by admin on 15-4-13.
 */
publicclass ShareActivity extendsActivity {
    @Override
    protectedvoid onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.share_layout);
 
    }
 
    //分享文字
    publicvoid shareText(View view) {
        Intent shareIntent = newIntent();
        shareIntent.setAction(Intent.ACTION_SEND);
        shareIntent.putExtra(Intent.EXTRA_TEXT,"This is my Share text.");
        shareIntent.setType("text/plain");
 
        //设置分享列表的标题，并且每次都显示分享列表
        startActivity(Intent.createChooser(shareIntent,"分享到"));
    }
 
    //分享单张图片
    publicvoid shareSingleImage(View view) {
        String imagePath = Environment.getExternalStorageDirectory() + File.separator + "test.jpg";
        //由文件得到uri
        Uri imageUri = Uri.fromFile(newFile(imagePath));
        Log.d("share","uri:"+ imageUri);  //输出：file:///storage/emulated/0/test.jpg
 
        Intent shareIntent = newIntent();
        shareIntent.setAction(Intent.ACTION_SEND);
        shareIntent.putExtra(Intent.EXTRA_STREAM, imageUri);
        shareIntent.setType("image/*");
        startActivity(Intent.createChooser(shareIntent,"分享到"));
    }
 
    //分享多张图片
    publicvoid shareMultipleImage(View view) {
        ArrayList uriList = newArrayList<>();
 
        String path = Environment.getExternalStorageDirectory() + File.separator;
        uriList.add(Uri.fromFile(newFile(path+"australia_1.jpg")));
        uriList.add(Uri.fromFile(newFile(path+"australia_2.jpg")));
        uriList.add(Uri.fromFile(newFile(path+"australia_3.jpg")));
 
        Intent shareIntent = newIntent();
        shareIntent.setAction(Intent.ACTION_SEND_MULTIPLE);
        shareIntent.putParcelableArrayListExtra(Intent.EXTRA_STREAM, uriList);
        shareIntent.setType("image/*");
        startActivity(Intent.createChooser(shareIntent,"分享到"));
    }
}