Android MenuItem分享

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
 
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.app.Activity;
import android.content.Intent;
import android.view.ActionProvider;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.ShareActionProvider;
 
public class MainActivity extends Activity {
 
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }
 
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main,menu);
        // 获取菜单项
        MenuItem item = menu.findItem(R.id.action_fuck_share);
 
        // 获取provider 的对象
        /**
         * ShareActionProvider 分享动作的提供者
         */
        ShareActionProvider provider = (ShareActionProvider) item
                .getActionProvider();
 
        // 设置分享的意图
        Intent shareIntent = new Intent();
        shareText(provider,shareIntent);
 
        return true;
    }
 
    private void shareText(ShareActionProvider provider,Intent shareIntent) {
        // 隐式跳转
        shareIntent.setAction(Intent.ACTION_SEND);
        /**
         * 设置Intent的
         */
        shareIntent.putExtra(Intent.EXTRA_TEXT,"分享的内容");
 
        shareIntent.setType("text/*");
 
        provider.setShareIntent(shareIntent);
    }
 
    private void shareImage(ShareActionProvider provider,Intent shareIntent) {
        // 隐式跳转
        shareIntent.setAction(Intent.ACTION_SEND);
        // 目的： 将assets 的文件，放在sd上面，再分析sd卡的图片,注意：必须要写到sd才能共享出去
        try {
            // 获取Assets下面的img文件，得到一个输入流
            InputStream is = getAssets().open("beijin.jpeg");
            // 判断挂载，和权限
            if (!Environment.getExternalStorageState().equals(
                    Environment.MEDIA_MOUNTED)) {
                return;
            }
            //放在外部存储的根路径下
            File file = new File(Environment.getExternalStorageDirectory()
                    .getAbsolutePath()+File.separator+"img.jpg");
            //不存在就创建一个文件    
            if(!file.exists()){
                file.createNewFile();
            }
            FileOutputStream fos = new FileOutputStream(file);
             
            int len = 0;
            byte[] buff = new byte[1024];
            while((len=is.read(buff))!=-1){
                fos.write(buff,len);
            }
            fos.close();
            is.close();
 
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        //标识符，文件对应着的Uri
        Uri uri = Uri.fromFile(new File(Environment
                .getExternalStorageDirectory()
                .getAbsolutePath()+File.separator+"img.jpg"));
         
        /**
         * 设置Intent的
         */
        shareIntent.putExtra(Intent.EXTRA_STREAM,uri.toString());
 
        shareIntent.setType("image/*");
 
        provider.setShareIntent(shareIntent);
    }
 
}