package com.lyf.ai.myapplication;
import android.app.TabActivity;
import android.content.Intent;
import android.os.Bundle;
import android.view.Window;
import android.widget.CompoundButton;
import android.widget.RadioButton;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.TabHost;
public class MainActivity extends TabActivity implements OnCheckedChangeListener{
/*
声明全局变量
*/
private TabHost mTabHost;
private Intent mAIntent;
private Intent mBIntent;
private Intent mCIntent;
private Intent mDIntent;
private Intent mEIntent;
/*
在第一次创建活动时调用。
*/
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//标记为“无标题”功能,在屏幕顶部关闭标题。
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.maintabs);
//初始化各个tab标签对应的intent
this.mAIntent = new Intent(this,BiddingInformationActivity.class);
this.mBIntent = new Intent(this,BActivity.class);
this.mCIntent = new Intent(this,CActivity.class);
this.mDIntent = new Intent(this,DActivity.class);
this.mEIntent = new Intent(this,MoreActivity.class);
//为RadioGroup设置监听
((RadioButton) findViewById(R.id.radio_button0)).setOnCheckedChangeListener(this);
((RadioButton) findViewById(R.id.radio_button1)).setOnCheckedChangeListener(this);
((RadioButton) findViewById(R.id.radio_button2)).setOnCheckedChangeListener(this);
((RadioButton) findViewById(R.id.radio_button3)).setOnCheckedChangeListener(this);
((RadioButton) findViewById(R.id.radio_button4)).setOnCheckedChangeListener(this);
setupIntent();
}
/*
点击触发事件,
*/
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
if(isChecked){
switch (buttonView.getId()) {
case R.id.radio_button0:
this.mTabHost.setCurrentTabByTag("A_TAB");
break;
case R.id.radio_button1:
this.mTabHost.setCurrentTabByTag("B_TAB");
break;
case R.id.radio_button2:
this.mTabHost.setCurrentTabByTag("C_TAB");
break;
case R.id.radio_button3:
this.mTabHost.setCurrentTabByTag("D_TAB");
break;
case R.id.radio_button4:
this.mTabHost.setCurrentTabByTag("MORE_TAB");
break;
}
}
}
/*
为tabHost添加各个标签项
*/
private void setupIntent() {
this.mTabHost = getTabHost();
TabHost localTabHost = this.mTabHost;
localTabHost.addTab(buildTabSpec("A_TAB", R.string.main_home, R.mipmap.icon_1_n, this.mAIntent));
localTabHost.addTab(buildTabSpec("B_TAB", R.string.main_news, R.mipmap.icon_2_n, this.mBIntent));
localTabHost.addTab(buildTabSpec("C_TAB", R.string.main_manage_date, R.mipmap.icon_3_n, this.mCIntent));
localTabHost.addTab(buildTabSpec("D_TAB", R.string.main_friends, R.mipmap.icon_4_n, this.mDIntent));
localTabHost.addTab(buildTabSpec("MORE_TAB", R.string.more, R.mipmap.icon_5_n, this.mEIntent));
}
/*
自定义创建标签项的方法
@param tag 标签标识
@param resLabel 标签文字
@param resIcon 标签图片
*/
private TabHost.TabSpec buildTabSpec(String tag, int resLabel, int resIcon, final Intent content) {
return this.mTabHost.newTabSpec(tag).setIndicator(getString(resLabel),
getResources().getDrawable(resIcon)).setContent(content);
}
本人新手一 枚,代码看不懂,请求大神解释,或者给参考资料,谢谢大家的帮助!
主要问题有
(1)它是怎么默认开始页面的
(2)如果要跳转一个页面,我又应该怎么学 ,跳转页面后下面的导航栏还要存在