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) {
4000

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();
}
}