Android MenuItem分享

2015/10/13 42145

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用隐式跳转手机所有有分享功能的应用。这里是简单的分享图片和文字。
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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, 0, 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);
    }
  
}