Fragment案例

Fragment也是常用的在Android中,之前只是总结了下知识点,今天写了个例子,对只是巩固了下,下面是例子:
这里写图片描述
MainActivity.class

package com.example.fragmentdemo1;

import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.ImageView;
import android.widget.LinearLayout;

import com.example.fragment.A;

public class MainActivity extends FragmentActivity implements OnClickListener{

    private LinearLayout ll3,ll2,ll4,ll1;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        ll1 = (LinearLayout) findViewById(R.id.ll1);
        ll1.setOnClickListener(this);

        ll2 = (LinearLayout) findViewById(R.id.ll2);
        ll2.setOnClickListener(this);


        ll3 = (LinearLayout) findViewById(R.id.ll3);
        ll3.setOnClickListener(this);

        ll4 = (LinearLayout) findViewById(R.id.ll4);
        ll4.setOnClickListener(this);
        onClick(ll1);

    }
    private A fgA,fgB,fgC,fgD;
    @Override
    public void onClick(View v) {
        ImageView icon;
        switch (v.getId()) {
        case R.id.ll1:{
            if(R.id.ll1 != curFragMent){
                this.resetIconBackground();
                curFragMent = R.id.ll1;
                icon = (ImageView) ll1.findViewById(R.id.iv1);
                icon.setBackgroundResource(R.drawable.icon);
                if(fgD == null){
                    fgD = new A();

                }
                getFragmentManager().beginTransaction().replace(R.id.fl_main/*fl_drivingcar_main*/,fgD).commit();
            }
            break;
        }
        case R.id.ll2:{
            if(R.id.ll2 != curFragMent){
                this.resetIconBackground();
                curFragMent = R.id.ll2;
                icon = (ImageView) ll2.findViewById(R.id.iv2);
                icon.setBackgroundResource(R.drawable.icon);
                if(fgC == null){
                    fgC = new A(2);
                }
                getFragmentManager().beginTransaction().replace(R.id.fl_main/*fl_drivingcar_main*/,fgC).commit();
            }
            break;
        }
        case R.id.ll3:{//消息
            if(R.id.ll3 != curFragMent){
                this.resetIconBackground();
                curFragMent = R.id.ll3;
                icon = (ImageView) ll3.findViewById(R.id.iv3);
                icon.setBackgroundResource(R.drawable.icon);
                if(fgA == null){
                    fgA = new A(3);
                }
                //                  fgA.enableTitleListener();\
                getFragmentManager().beginTransaction().replace(R.id.fl_main/*fl_drivingcar_main*/,fgA).commit();
            }
            break;
        }
        case R.id.ll4:{
            if(R.id.ll4 != curFragMent){
                this.resetIconBackground();
                curFragMent = R.id.ll4;
                icon = (ImageView) ll4.findViewById(R.id.iv4);
                icon.setBackgroundResource(R.drawable.icon);
                if(fgB == null){
                    fgB = new A(4);
                }
                getFragmentManager().beginTransaction().replace(R.id.fl_main/*fl_drivingcar_main*/, fgB).commit();
            }
            break;
        }
        }
    }
    private int curFragMent = 0;
    private void resetIconBackground(){
        ImageView icon;
        switch (curFragMent) {
        case R.id.ll1:{
            icon = (ImageView) ll1.findViewById(R.id.iv1);
            icon.setBackgroundResource(R.drawable.ic_launcher);
            break;
        }
        case R.id.ll2:{
            icon = (ImageView) ll2.findViewById(R.id.iv2);
            icon.setBackgroundResource(R.drawable.ic_launcher);
            break;
        }
        case R.id.ll3:{
            icon = (ImageView) ll3.findViewById(R.id.iv3);
            icon.setBackgroundResource(R.drawable.ic_launcher);
            break;
        }
        case R.id.ll4:{
            icon = (ImageView) ll4.findViewById(R.id.iv4);
            icon.setBackgroundResource(R.drawable.ic_launcher);
            break;
        }
        }
    }

}

A.class

package com.example.fragment;

import android.app.Fragment;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

import com.example.fragmentdemo1.R;

public class A extends Fragment{
    int tv_type;
    TextView tv;


    public A() {
    }
    public A(int tv_type) {
        this.tv_type = tv_type;
    }
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        View view=inflater.inflate(R.layout.activity_content, null);
        tv=(TextView) view.findViewById(R.id.tv_type);
        tv.setText(tv_type+"");
        return view;
    }

}

activity_bottom.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="77dp"
    android:orientation="vertical" >
    <View
        android:layout_width="match_parent"
        android:layout_height="1dp"
        android:background="#D3D3D3" />
    <LinearLayout
        android:baselineAligned="false"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="#ECECEC"
        android:orientation="horizontal"
        android:paddingBottom="10dp"
        android:paddingTop="10dp" >
        <LinearLayout
            android:id="@+id/ll1"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:gravity="center_horizontal"
            android:orientation="vertical" >
            <ImageView
                android:id="@+id/iv1"

                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:background="@drawable/ic_launcher" />
            <TextView
                android:clickable="false"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"/>
        </LinearLayout>
        <LinearLayout
            android:id="@+id/ll2"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:gravity="center_horizontal"
            android:orientation="vertical" >
            <RelativeLayout
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:gravity="center" >
                <ImageView
                    android:id="@+id/iv2"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:background="@drawable/ic_launcher" />
                <!-- <TextView
                    android:id="@+id/msg_number"
                    android:clickable="false"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:background="@drawable/ic_launcher"
                    android:layout_alignBaseline="@id/message_icon"
                    android:gravity="center"
                    android:layout_marginLeft="15dp"
                    android:textSize="8sp"/> -->
            </RelativeLayout>
            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="222"/>
        </LinearLayout>

        <LinearLayout
            android:id="@+id/ll3"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:gravity="center_horizontal"
            android:orientation="vertical" >
            <ImageView
                android:id="@+id/iv3"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:background="@drawable/ic_launcher" />
            <TextView
                android:clickable="false"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="不错"/>
        </LinearLayout>
        <LinearLayout
            android:id="@+id/ll4"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:gravity="center_horizontal"
            android:orientation="vertical" >
            <ImageView
                android:id="@+id/iv4"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:background="@drawable/ic_launcher" />
            <TextView
                android:clickable="false"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="444"/>
        </LinearLayout>
    </LinearLayout>
</LinearLayout>

activity_content.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:gravity="center">
    <TextView 
        android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="我是内容"/>
    <TextView 
        android:id="@+id/tv_type"
        android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="我是标识"/>

</LinearLayout>

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">

    <include
        android:layout_width="match_parent"
        android:layout_height="57dp"
        layout="@layout/activity_title"
        android:layout_alignParentTop="true" />

    <FrameLayout
        android:id="@+id/fl_main"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

    <include
        android:layout_width="match_parent"
        android:layout_height="57dp"
        layout="@layout/activity_bottom"
        android:layout_alignParentBottom="true" />

</RelativeLayout>

activity_title.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="6dp"
    android:orientation="vertical" >

    <TextView
        android:id="@+id/tv_title"
        android:layout_width="wrap_content"
        android:layout_height="12dp"
        android:text="111" />

</LinearLayout>
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