问题：当你的导航在TabActivity中 而子页面的一个button须要切换到当中的某一个导航页面

转载请注明出处:http://blog.csdn.net/x605940745

demo下载地址：http://download.csdn.net/detail/x605940745/7353695

package com.example.shows;

import android.app.TabActivity;

import android.content.BroadcastReceiver;

import android.content.Context;

import android.content.Intent;

import android.content.IntentFilter;

import android.os.Bundle;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.Button;

import android.widget.TabHost;

/**

 * 解决TabActivity中子页面不通过导航跳转到还有一个页面的问题

 * @author xionglh

 *

 */

@SuppressWarnings("deprecation")

public class MainActivity extends TabActivity implements OnClickListener {

	private Intent aIntent;

	private Intent bIntent;

	private TabHost host;

	private Button show1;

	private Button show2;

	@Override

	protected void onCreate(Bundle savedInstanceState) {

		super.onCreate(savedInstanceState);

		setContentView(R.layout.main);

		aIntent = new Intent(this, ActivityA.class);

		bIntent = new Intent(this, ActivityB.class);

		host = getTabHost();

		host.addTab(host.newTabSpec("a").setIndicator("a").setContent(aIntent));

		host.addTab(host.newTabSpec("b").setIndicator("b").setContent(bIntent));

		show1 = (Button) findViewById(R.id.bt_showa);

		show2 = (Button) findViewById(R.id.bt_showb);

		show1.setOnClickListener(this);

		show2.setOnClickListener(this);

		//注冊广播

		IntentFilter filter = new IntentFilter("com.example.shows.shows");

		TestRevice revice = new TestRevice();

		registerReceiver(revice, filter);

	}

	class TestRevice extends BroadcastReceiver {

		@Override

		public void onReceive(Context context, Intent intent) {

			//实现跳转

			host.setCurrentTabByTag("a");

		}

	}

	@Override

	public void onClick(View v) {

		switch (v.getId()) {

		case R.id.bt_showa:

			host.setCurrentTabByTag("a");

			break;

		case R.id.bt_showb:

			host.setCurrentTabByTag("b");

		default:

			break;

		}

	}

}

package com.example.shows;

import android.app.Activity;

import android.os.Bundle;

public class ActivityA extends Activity {

	@Override

	protected void onCreate(Bundle savedInstanceState) {

		// TODO Auto-generated method stub

		super.onCreate(savedInstanceState);

		setContentView(R.layout.a);

	}

}

package com.example.shows;

import android.app.Activity;

import android.content.Intent;

import android.os.Bundle;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.Button;

public class ActivityB extends Activity {

	private Button show;

	@Override

	protected void onCreate(Bundle savedInstanceState) {

		super.onCreate(savedInstanceState);

		setContentView(R.layout.b);

		show = (Button) findViewById(R.id.ss);

		show.setOnClickListener(new OnClickListener() {

			@Override

			public void onClick(View v) {

				// 发送广播

				Intent intent = new Intent("com.example.shows.shows");

				sendBroadcast(intent);

			}

		});

	}

}