Fragment 学习

  看了都会的 

 





 

 



activity_main.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    tools:context="com.example.testfragment.MainActivity"

    tools:ignore="MergeRootFrame" >

   

    <fragment

        android:name="com.example.fragment.MyTitleFragment"

        android:id="@+id/fragment_title"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        />

   

    <fragment

        android:name="com.example.fragment.BottomFragment"

        android:id="@+id/fragment_bottom"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:layout_alignParentBottom="true"

        />

</RelativeLayout>

 

MainActivity.java

package com.example.testfragment;

import android.app.Activity;

import android.app.Fragment;

import android.os.Bundle;

import android.view.LayoutInflater;

import android.view.Menu;

import android.view.MenuItem;

import android.view.View;

import android.view.ViewGroup;

import android.view.Window;

public class MainActivity extends Activity {

 @Override

 protected void onCreate(Bundle savedInstanceState) {

  super.onCreate(savedInstanceState);

  this.requestWindowFeature(Window.FEATURE_NO_TITLE);

  View contentView = LayoutInflater.from(MainActivity.this).inflate(R.layout.activity_main,null);

  setContentView(contentView);

  // if (savedInstanceState == null) {

  // getFragmentManager().beginTransaction()

  // .add(R.id.container, new PlaceholderFragment()).commit();

  // }

 }

 @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);

 }

 /**

  * A placeholder fragment containing a simple view.

  */

 public static class PlaceholderFragment extends Fragment {

  public PlaceholderFragment() {

  }

  @Override

  public View onCreateView(LayoutInflater inflater, ViewGroup container,

    Bundle savedInstanceState) {

   View rootView = inflater.inflate(R.layout.fragment_main, null);

   return rootView;

  }

 }

 

mytitle_layout.xml

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:orientation="horizontal"

    android:background="#000000">

   

    <TextView

        android:layout_width="0dp"

        android:layout_height="wrap_content"

        android:layout_weight="1"

        android:text="第一个位置"

        android:textColor="#ffffff"

        android:gravity="center"

        />

     <TextView

        android:layout_width="0dp"

        android:layout_height="wrap_content"

        android:layout_weight="1"

        android:text="第二个位置"

        android:textColor="#ffffff"

        android:gravity="center"

        />

      <TextView

        android:layout_width="0dp"

        android:layout_height="wrap_content"

        android:layout_weight="1"

        android:text="第三个位置"

        android:textColor="#ffffff"

        android:gravity="center"

        />

</LinearLayout>

 

 

 MyTitleFragment.java

package com.example.fragment;

import com.example.testfragment.R;

import android.app.Activity;

import android.app.Fragment;

import android.os.Bundle;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

public class MyTitleFragment extends Fragment{

 

 @Override

 public void onAttach(Activity activity) {

  super.onAttach(activity);

  sys("onAttach()");

 }

 

 @Override

 public void onCreate(Bundle savedInstanceState) {

  super.onCreate(savedInstanceState);

  sys("onCreate()");

 }

 

 @Override

 public View onCreateView(LayoutInflater inflater, ViewGroup container,

   Bundle savedInstanceState) {

  sys("onCreateView()");

  

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

  

  return view;

 }

 

 @Override

 public void onActivityCreated(Bundle savedInstanceState) {

  super.onActivityCreated(savedInstanceState);

  sys("onActivityCreated()");

 }

 

 @Override

 public void onStart() {

  super.onStart();

  sys("onStart()");

 }

 

 @Override

 public void onResume() {

  super.onResume();

  sys("onResume()");

 }

 

 @Override

 public void onPause() {

  super.onPause();

  sys("onPause()");

 }

 

 @Override

 public void onStop() {

  super.onStop();

  sys("onStop()");

 }

 

 @Override

 public void onDestroyView() {

  super.onDestroyView();

  sys("onDestroyView()");

 }

 

 @Override

 public void onDestroy() {

  super.onDestroy();

  sys("onDestroy()");

 }

 

 @Override

 public void onDetach() {

  super.onDetach();

  sys("onDetach()");

 }

 

 

 private void sys(String s){

  System.out.println(s);

 }

}

 

bottom_layout.xml

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:orientation="horizontal"

    android:background="#000000">

   

   

    <TextView

        android:layout_width="0dp"

        android:layout_height="wrap_content"

        android:layout_weight="1"

        android:text="Tab_1"

        android:textColor="#ffffff"

        android:gravity="center"

        />

   

     <TextView

        android:layout_width="0dp"

        android:layout_height="wrap_content"

        android:layout_weight="1"

        android:text="Tab_2"

        android:textColor="#ffffff"

        android:gravity="center"

        />

    

      <TextView

        android:layout_width="0dp"

        android:layout_height="wrap_content"

        android:layout_weight="1"

        android:text="Tab_3"

        android:textColor="#ffffff"

        android:gravity="center"

        />

</LinearLayout>

 

BottomFragment.java

package com.example.fragment;

import com.example.testfragment.R;

import android.app.Activity;

import android.app.Fragment;

import android.os.Bundle;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

public class BottomFragment extends Fragment{

 

 @Override

 public void onAttach(Activity activity) {

  super.onAttach(activity);

 }

 

 @Override

 public void onCreate(Bundle savedInstanceState) {

  super.onCreate(savedInstanceState);

 }

 

 @Override

 public View onCreateView(LayoutInflater inflater, ViewGroup container,

   Bundle savedInstanceState) {

  View view = inflater.inflate(R.layout.bottom_layout, container, false);

  return view;

 }

 

 @Override

 public void onActivityCreated(Bundle savedInstanceState) {

  super.onActivityCreated(savedInstanceState);

 }

 

 @Override

 public void onStart() {

  super.onStart();

 }

 

 @Override

 public void onResume() {

  super.onResume();

 }

 

 @Override

 public void onStop() {

  super.onStop();

 }

 

 @Override

 public void onDestroyView() {

  super.onDestroyView();

 }

 

 @Override

 public void onDestroy() {

  super.onDestroy();

 }

 

 @Override

 public void onDetach() {

  super.onDetach();

 }

}