几个Action属性和Data属性的特殊组合：

ACTION_VIEW content：//com.android.contacts/contacts/1：显示标识为1的联系人的信息
ACTION_EDIT content：//com.android.contacts/contacts/1：编辑标识为1的联系人的信息
ACTION_DIAL content：//com.android.contacts/contacts/1：显示向标识为1的联系人拨号的界面
ACTION_VIEW tel：123：显示向指定号码123拨号的界面
ACTION_DIAL tel：123：显示向指定号码123拨号的界面
ACTION_VIEW content：//contacts/people/：显示所有联系人列表的信息，通过这种组合可以方便地查看系统联系人

MainActivity.java

package com.hust.actiondataonsystemactivity;

import android.app.Activity;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;


public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Button brower=(Button) findViewById(R.id.button1);
        Button edit=(Button) findViewById(R.id.button2);
        Button call=(Button) findViewById(R.id.button3);
        //浏览网页
        brower.setOnClickListener(new OnClickListener(){

			@Override
			public void onClick(View v) {
				// TODO Auto-generated method stub
				Intent intent =new Intent();
                intent.setAction(Intent.ACTION_VIEW);
                intent.setData(Uri.parse("http://www.baidu.com"));
                startActivity(intent);
			}
        	
        });
        //编辑联系人页面
        edit.setOnClickListener(new OnClickListener(){

     			@Override
     			public void onClick(View v) {
     				// TODO Auto-generated method stub
     				Intent intent =new Intent();
                    intent.setAction(Intent.ACTION_EDIT);
                    intent.setData(Uri.parse("content://com.android.contacts/contacts/2"));
                    startActivity(intent);
     			}
             	
             });
        //拨号页面
        call.setOnClickListener(new OnClickListener(){

     			@Override
     			public void onClick(View v) {
     				// TODO Auto-generated method stub
     				Intent intent =new Intent();
                    intent.setAction(Intent.ACTION_DIAL);
                    intent.setData(Uri.parse("tel:02780108225"));
                    startActivity(intent);
     			}
             	
             });
    }

    @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);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();
        if (id == R.id.action_settings) {
            return true;
        }
        return super.onOptionsItemSelected(item);
    }
}