Fragment 选项卡

选项卡的主要的思路就是通过FragmentManager这个类来进行replace的方法的调用。替换需要的Fragment来显示。

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:orientation="vertical" >

    

   

        android:layout_width="fill_parent"

        android:layout_height="60dp"

        android:orientation="horizontal">

        

       

            android:id="@+id/left"

            android:layout_width="0dp"

            android:layout_height="fill_parent"

            android:layout_weight="1"

            android:text="左边"

            android:gravity="center"/>

        

       

            android:id="@+id/right"

            android:layout_width="0dp"

            android:layout_height="fill_parent"

            android:layout_weight="1"

            android:text="右边"

            android:gravity="center"/>

        

   

    

   

        android:id="@+id/content"

        android:layout_width="fill_parent"

        android:layout_height="fill_parent"

        android:orientation="vertical">

   

package com.demo.activity;

import android.os.Bundle;

import android.support.v4.app.FragmentActivity;

import android.support.v4.app.FragmentManager;

import android.support.v4.app.FragmentTransaction;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.TextView;

public class MainActivity extends FragmentActivity implements OnClickListener {

private TextView leftView, rightView;

private FragmentManager fragmentManager;

private FragmentTransaction ft;

@Override

protected void onCreate(Bundle arg0) {

super.onCreate(arg0);

setContentView(R.layout.main_activity);

leftView = (TextView)findViewById(R.id.left);

rightView = (TextView)findViewById(R.id.right);

leftView.setOnClickListener(this);

rightView.setOnClickListener(this);

fragmentManager = getSupportFragmentManager();

ft = fragmentManager.beginTransaction();

ft.replace(R.id.content, new FragmentLeft());

ft.commit();

}

@Override

public void onClick(View v) {

ft = fragmentManager.beginTransaction();

switch (v.getId()) {

case R.id.left:

leftView.setBackgroundResource(R.drawable.ic_launcher);

rightView.setBackgroundResource(R.drawable.an);

ft.replace(R.id.content, new FragmentLeft());

break;

case R.id.right:

rightView.setBackgroundResource(R.drawable.ic_launcher);

leftView.setBackgroundResource(R.drawable.an);

ft.replace(R.id.content, new FragmentRight());

break;

default:

break;

}

ft.commit();

}

}

package com.demo.activity;

import android.os.Bundle;

import android.support.v4.app.Fragment;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

public class FragmentLeft extends Fragment{

@Override

public View onCreateView(LayoutInflater inflater, ViewGroup container,

Bundle savedInstanceState) {

View view = inflater.inflate(R.layout.fragment_left, null);

return view;

}

}

package com.demo.activity;

import android.os.Bundle;

import android.support.v4.app.Fragment;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

public class FragmentRight extends Fragment{

@Override

public View onCreateView(LayoutInflater inflater, ViewGroup container,

Bundle savedInstanceState) {

View view = inflater.inflate(R.layout.fragment_right, null);

return view;

}

}