android框架的基本搭建

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context="com.zjly.androidkuangjia.MainActivity">

    <include layout="@layout/title_layout" />

    <FrameLayout
        android:id="@+id/frame_main"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="1" />

    <RadioGroup
        android:id="@+id/rg_main"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="#ccc"
        android:orientation="horizontal">

        <RadioButton
            android:id="@+id/rb_home"
            style="@style/RadioButton_Style"
            android:drawableTop="@drawable/home_drawabel_rb"
            android:text="首页" />

        <RadioButton
            android:id="@+id/rb_recycle"
            style="@style/RadioButton_Style"
            android:drawableTop="@drawable/recycle_drawabel_rb"
            android:text="回收" />

        <RadioButton
            android:id="@+id/rb_huanwu"
            style="@style/RadioButton_Style"
            android:drawableTop="@drawable/huanwu_drawabel_rb"
            android:text="换物" />

        <RadioButton
            android:id="@+id/rb_mine"
            style="@style/RadioButton_Style"
            android:drawableTop="@drawable/mine_drawabel_rb"
            android:text="我的" />

    </RadioGroup>
</LinearLayout>

android官方文档，Fragment包在FrameLayout中，建议用FrameLayout;

<?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="50dp"
    android:background="@color/colorGreen"
    android:gravity="center"
    android:orientation="horizontal">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="android框架基本搭建"
        android:textColor="#fff"
        android:textSize="18sp" />
</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:drawable="@drawable/icon_home" android:state_checked="false" />
    <item android:drawable="@drawable/icon_home_checked" android:state_checked="true" />
</selector>

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:drawable="@drawable/icon_huanwu" android:state_checked="false" />
    <item android:drawable="@drawable/icon_huanwu_checked" android:state_checked="true" />
</selector>

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:drawable="@drawable/icon_mine" android:state_checked="false" />
    <item android:drawable="@drawable/icon_mine_cheched" android:state_checked="true" />
</selector>

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:color="#000" android:state_checked="false" />
    <item android:color="@color/colorGreen" android:state_checked="true" />
</selector>

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:drawable="@drawable/icon_recycle" android:state_checked="false" />
    <item android:drawable="@drawable/icon_recycle_checked" android:state_checked="true" />
</selector>

package com.zjly.androidkuangjia;

import android.os.Bundle;
import android.support.annotation.IdRes;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentTransaction;
import android.widget.FrameLayout;
import android.widget.RadioGroup;

import java.util.ArrayList;
import java.util.List;

import butterknife.Bind;
import butterknife.ButterKnife;

public class MainActivity extends FragmentActivity {

    @Bind(R.id.frame_main)
    FrameLayout frameMain;
    @Bind(R.id.rg_main)
    RadioGroup rgMain;
    private List<Fragment> fragments;
    private int position;
    private Fragment mContent;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        ButterKnife.bind(this);
        initView();
        initEvent();
        rgMain.check(R.id.rb_home);
    }

    private void initEvent() {
        rgMain.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(RadioGroup radioGroup, @IdRes int i) {
                switch (i) {
                    case R.id.rb_home:
                        position = 0;
                        break;
                    case R.id.rb_recycle:
                        position = 1;
                        break;
                    case R.id.rb_huanwu:
                        position = 2;
                        break;
                    case R.id.rb_mine:
                        position = 3;
                        break;
                    default:
                        position = 0;
                        break;
                }
                Fragment toFragment = getFragment();
                switchFragment(mContent,toFragment);
            }
        });
    }

    private void switchFragment(Fragment fromFragment,Fragment toFragment) {
        if (fromFragment != toFragment) {
            mContent=toFragment;
            FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
            //判断有没有被添加
            if (!toFragment.isAdded()) {
                if (fromFragment != null) {
                    transaction.hide(fromFragment);
                }
                if (toFragment != null) {
                    transaction.add(R.id.frame_main, toFragment).commit();
                }
            } else {//已经被添加过
                //隐藏以前的
                if (fromFragment != null) {

                    transaction.hide(fromFragment);
                }
                //显示新的
                if (toFragment != null) {

                    transaction.show(toFragment).commit();
                }
            }
        }

    }

    private Fragment getFragment() {
        return fragments.get(position);
    }


    private void initView() {
        fragments = new ArrayList<>();
        fragments.add(new HomeFragment());
        fragments.add(new RecycleFragment());
        fragments.add(new HuanWuFragment());
        fragments.add(new MineFragment());
    }
}

package com.zjly.androidkuangjia;

import android.content.Context;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

/**
 * Created by Administrator on 2017/5/27.
 */

public abstract class BaseFragment extends Fragment {
    public Context mContext;

    @Override
    public void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        mContext = getActivity();
    }

    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        return initView();
    }

    @Override
    public void onActivityCreated(@Nullable Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);
        initData();
    }

    protected void initData() {

    }

    protected abstract View initView();


}

package com.zjly.androidkuangjia;

import android.graphics.Color;
import android.util.Log;
import android.view.Gravity;
import android.view.View;
import android.widget.TextView;

import static android.content.ContentValues.TAG;

/**
 * Created by Administrator on 2017/5/27.
 */

public class HomeFragment extends BaseFragment {
    @Override
    protected View initView() {
        Log.e(TAG, "HomeFragment初始化 ");
        TextView tv = new TextView(mContext);
        tv.setText("HomeFragment");
        tv.setTextSize(18);
        tv.setTextColor(Color.RED);
        tv.setGravity(Gravity.CENTER);
        return tv;
    }

    @Override
    protected void initData() {
        Log.e(TAG, "HomeFragment加载数据 ");
        super.initData();
    }
}

package com.zjly.androidkuangjia;

import android.graphics.Color;
import android.util.Log;
import android.view.Gravity;
import android.view.View;
import android.widget.TextView;

import static android.content.ContentValues.TAG;

/**
 * Created by Administrator on 2017/5/27.
 */

public class HuanWuFragment extends BaseFragment {
    @Override
    protected View initView() {
        Log.e(TAG, "HuanWuFragment ");
        TextView tv = new TextView(mContext);
        tv.setText("HuanWuFragment");
        tv.setTextSize(18);
        tv.setTextColor(Color.RED);
        tv.setGravity(Gravity.CENTER);
        return tv;
    }

    @Override
    protected void initData() {
        Log.e(TAG, "HuanWuFragment ");
        super.initData();
    }
}

package com.zjly.androidkuangjia;

import android.graphics.Color;
import android.util.Log;
import android.view.Gravity;
import android.view.View;
import android.widget.TextView;

import static android.content.ContentValues.TAG;

/**
 * Created by Administrator on 2017/5/27.
 */

public class RecycleFragment extends BaseFragment {
    @Override
    protected View initView() {
        Log.e(TAG, "RecycleFragment ");
        TextView tv = new TextView(mContext);
        tv.setText("RecycleFragment");
        tv.setTextSize(18);
        tv.setTextColor(Color.RED);
        tv.setGravity(Gravity.CENTER);
        return tv;
    }

    @Override
    protected void initData() {
        Log.e(TAG, "RecycleFragment ");
        super.initData();
    }
}

package com.zjly.androidkuangjia;

import android.graphics.Color;
import android.util.Log;
import android.view.Gravity;
import android.view.View;
import android.widget.TextView;

import static android.content.ContentValues.TAG;

/**
 * Created by Administrator on 2017/5/27.
 */

public class MineFragment extends BaseFragment {
    @Override
    protected View initView() {
        Log.e(TAG, "MineFragment ");
        TextView tv = new TextView(mContext);
        tv.setText("MineFragment");
        tv.setTextSize(18);
        tv.setTextColor(Color.RED);
        tv.setGravity(Gravity.CENTER);
        return tv;
    }

    @Override
    protected void initData() {
        Log.e(TAG, "MineFragment ");
        super.initData();
    }
}

android框架的基本搭建

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