Fragment底部栏快速创建

1：直接 复制粘贴就好    
 2： xml配置自己弄，图片文字资源自己弄
 3：每一页的逻辑，在每页的Fragment 自己写下就好




/**
* 主页面内容
* 
*/
public class MainActivity extends FragmentActivity implements View.OnClickListener {


// 定义4个Fragment对象
private FirstFragment fg1;
private SecondFragment fg2;
private ThirdFragment fg3;


// 帧布局对象，用来存放Fragment对象
private FrameLayout frameLayout;


// 定义每个选项中的相关控件
private RelativeLayout firstLayout;
private RelativeLayout secondLayout;
private RelativeLayout thirdLayout;


private ImageView firstImage;
private ImageView secondImage;
private ImageView thirdImage;


private TextView firstText;
private TextView secondText;
private TextView thirdText;




// 定义几个颜色
private int whirt = 0xFFFFFFFF;
private int gray = 0xFF7597B3;
private int dark = 0xff000000;


// 定义FragmentManager对象管理器
private FragmentManager fragmentManager;




@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.show_main_lay);


fragmentManager = getSupportFragmentManager();
initView(); // 初始化界面控件
setChioceItem(0); // 初始化页面加载时显示第一个选项卡
}


/**
* 初始化页面
*/
private void initView() {
// 初始化底部导航栏的控件
firstImage = (ImageView) findViewById(R.id.first_image);
secondImage = (ImageView) findViewById(R.id.second_image);
thirdImage = (ImageView) findViewById(R.id.third_image);




firstText = (TextView) findViewById(R.id.first_text);
secondText = (TextView) findViewById(R.id.second_text);
thirdText = (TextView) findViewById(R.id.third_text);




firstLayout = (RelativeLayout) findViewById(R.id.first_layout);
secondLayout = (RelativeLayout) findViewById(R.id.second_layout);
thirdLayout = (RelativeLayout) findViewById(R.id.third_layout);




firstLayout.setOnClickListener(MainActivity.this);
secondLayout.setOnClickListener(MainActivity.this);
thirdLayout.setOnClickListener(MainActivity.this);
}


@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.first_layout:
setChioceItem(0);
break;
case R.id.second_layout:
setChioceItem(1);
break;
case R.id.third_layout:
setChioceItem(2);
break;
default:
break;
}


}


/**
* 设置点击选项卡的事件处理
*
* @param index 选项卡的标号：0, 1, 2, 3
*/
private void setChioceItem(int index) {
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
clearChioce(); // 清空, 重置选项, 隐藏所有Fragment
hideFragments(fragmentTransaction);


switch (index) {
case 0:
// firstImage.setImageResource(R.drawable.XXXX); 需要的话自行修改
firstText.setTextColor(dark);
firstLayout.setBackgroundColor(gray);


// 如果fg1为空，则创建一个并添加到界面上
if (fg1 == null) {
fg1 = new FirstFragment();
fragmentTransaction.add(R.id.content, fg1);
} else {
// 如果不为空，则直接将它显示出来
fragmentTransaction.show(fg1);
}


break;


case 1:
// secondImage.setImageResource(R.drawable.XXXX);
secondText.setTextColor(dark);
secondLayout.setBackgroundColor(gray);


if (fg2 == null) {
fg2 = new SecondFragment();
fragmentTransaction.add(R.id.content, fg2);
} else {
fragmentTransaction.show(fg2);
}


break;


case 2:
// thirdImage.setImageResource(R.drawable.XXXX);
thirdText.setTextColor(dark);
thirdLayout.setBackgroundColor(gray);


if (fg3 == null) {
fg3 = new ThirdFragment();
fragmentTransaction.add(R.id.content, fg3);
} else {
fragmentTransaction.show(fg3);
}


break;


}


fragmentTransaction.commit(); // 提交


}


/**
* 当选中其中一个选项卡时，其他选项卡重置为默认
*/
private void clearChioce() {
// firstImage.setImageResource(R.drawable.XXX);
firstText.setTextColor(gray);
firstLayout.setBackgroundColor(whirt);


// secondImage.setImageResource(R.drawable.XXX);
secondText.setTextColor(gray);
secondLayout.setBackgroundColor(whirt);


// thirdImage.setImageResource(R.drawable.XXX);
thirdText.setTextColor(gray);
thirdLayout.setBackgroundColor(whirt);


}


/**
* 隐藏Fragment
*
* @param fragmentTransaction
*/
private void hideFragments(FragmentTransaction fragmentTransaction) {
if (fg1 != null) {
fragmentTransaction.hide(fg1);
}


if (fg2 != null) {
fragmentTransaction.hide(fg2);
}


if (fg3 != null) {
fragmentTransaction.hide(fg3);
}




}


}