MainActivity如下:

package cn.testshare1;
import java.io.File;
import java.util.ArrayList;
import android.app.Activity;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
/**
 * Demo描述:
 * Android应用程序之间共享文字和图片
 * 
 * 参考资料:
 * http://www.vmeitime.com/post/2012-06-08/40027373105
 */
public class MainActivity extends Activity {
    private Button mTextButton;
    private Button mPictureButton;
    private Button mPicturesButton;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
		init();
	}
    private void init(){
    	mTextButton=(Button) findViewById(R.id.shareTextButton);
    	mTextButton.setOnClickListener(new ClickListenerImpl());
    	mPictureButton=(Button) findViewById(R.id.sharePicButton);
    	mPictureButton.setOnClickListener(new ClickListenerImpl());
    	mPicturesButton=(Button) findViewById(R.id.sharePicsButton);
    	mPicturesButton.setOnClickListener(new ClickListenerImpl());
    }

	private class ClickListenerImpl implements OnClickListener {
		@Override
		public void onClick(View view) {
			switch (view.getId()) {
			case R.id.shareTextButton:
				shareText("这是要分享的内容");
				break;
			case R.id.sharePicButton:
				sharePicture();
				break;
			case R.id.sharePicsButton:
				sharePictures();
				break;

			default:
				break;
			}

		}

	}
	
	//共享文字
	private void shareText(String string) {
		Intent intent = new Intent(Intent.ACTION_SEND);
		intent.putExtra(Intent.EXTRA_TEXT, string);
		intent.setType("text/plain");
		Intent.createChooser(intent,"共享文字");
		startActivity(intent);
	}
	
	//共享一张图片
	private void sharePicture(){
		Intent intent = new Intent();
		intent.setAction(Intent.ACTION_SEND);
		File file = new File(Environment.getExternalStorageDirectory()+File.separator+"test1.png");
		intent.putExtra(Intent.EXTRA_STREAM, Uri.fromFile(file));
		intent.setType("image/jpeg");
		Intent.createChooser(intent, "共享一张图片");
		startActivity(intent);
	}

	//共享多张图片
	private void sharePictures(){
		ArrayList<Uri> picturesUriArrayList=new ArrayList<Uri>();
		
		File pictureFile1=new File
		(Environment.getExternalStorageDirectory()+File.separator+"test1.png");
		File pictureFile2=new File
		(Environment.getExternalStorageDirectory()+File.separator+"test2.png");
		
		Uri pictureUri1=Uri.fromFile(pictureFile1);
		Uri pictureUri2=Uri.fromFile(pictureFile2);
		
		//不是很好的方式:
		//因为某些机型报错
		//Uri pictureUri1=Uri.parse("file:///mnt/sdcard/test1.png");
		//Uri pictureUri2=Uri.parse("file:///mnt/sdcard/test2.png");
		
		//错误的方式:
		//Uri pictureUri1=Uri.parse
		//(Environment.getExternalStorageDirectory()+File.separator+"test1.png");
		//Uri pictureUri2=Uri.parse
		//(Environment.getExternalStorageDirectory()+File.separator+"test2.png");
		
		picturesUriArrayList.add(pictureUri1);
		picturesUriArrayList.add(pictureUri2);
		
		Intent intent = new Intent();
		intent.setAction(Intent.ACTION_SEND_MULTIPLE);
	    intent.putParcelableArrayListExtra(Intent.EXTRA_STREAM, picturesUriArrayList); 
		intent.setType("image/jpeg");
		Intent.createChooser(intent, "共享多张图片");
		startActivity(intent);
	}

}

main.xml如下:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    >

    <Button
        android:id="@+id/shareTextButton"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="50dip"
        android:text="共享文字" 
     />
    <Button
        android:id="@+id/sharePicButton"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="150dip"
        android:text="共享一张图片" 
     />
    <Button
        android:id="@+id/sharePicsButton"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="250dip"
        android:text="共享多张图片" 
     />

</RelativeLayout>