动态添加RadioButton并切换Fragment

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公司项目中有这样一个需求，当从网络获取json数据并解析后，动态的添加按钮，点击时切换对应按钮下存储的各种数据。

如下图：

这里只是单单为了动态添加RadioButton而已，所以数据直接用Fragment替换，效果如下：

MainActivity：

package com.ut.radiobuttondynamicadd;import android.os.Bundle;import android.support.v4.app.Fragment;import android.support.v4.app.FragmentTransaction;import android.support.v7.app.AppCompatActivity;import android.util.Log;import android.widget.FrameLayout;import android.widget.LinearLayout;import android.widget.RadioButton;import android.widget.RadioGroup;import com.ut.radiobuttondynamicadd.factory.UserFragmentFactory;import butterknife.ButterKnife;import butterknife.InjectView;public class MainActivity extends AppCompatActivity implements RadioGroup.OnCheckedChangeListener {    @InjectView(R.id.radiogroup_single)    RadioGroup mRadioGroup;    @InjectView(R.id.fl_info_framlayout)    FrameLayout mFlInfoFramlayout;    //注意，因为是测试，所以这个数组个数不能超过自定义的UserFragment个数，原因什么的自己应该都明白    private String[] mStrContents = {"孙悟空","猪八戒","沙和尚","白龙马","唐僧"};    private RadioButton mFirstButton;//第一个按钮    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        ButterKnife.inject(this);        initRadioButton();    }    /**     * 动态添加RadioButton     */    private void initRadioButton() {        for (int i = 0; i < mStrContents.length; i++) {            RadioButton tempButton = new RadioButton(this);            tempButton.setBackgroundResource(R.drawable.main_radiobutton_bg_selector);// 设置RadioButton的背景图片            tempButton.setButtonDrawable(android.R.color.transparent);            // 设置按钮的样式            tempButton.setPadding(30, 0, 0, 0);                // 设置文字距离按钮四周的距离            tempButton.setText(mStrContents[i]);            if (i == 0) {                mFirstButton = tempButton;            }            mRadioGroup.addView(tempButton, LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);        }        mRadioGroup.setOnCheckedChangeListener(this);        if (mFirstButton != null) {            mFirstButton.setChecked(true);        }    }    @Override    public void onCheckedChanged(RadioGroup group, int checkedId) {        RadioButton rb = (RadioButton) findViewById(checkedId);        if (rb.isChecked()) {            for (int i = 0; i < mStrContents.length; i++) {                if (rb.getText().equals(mStrContents[i])) {                    Log.d("onCheckedChanged", "当前选中界面：" + i);                    changeFragment(UserFragmentFactory.createFragment(i));                }            }        }    }    private void changeFragment(Fragment targetFragment) {        getSupportFragmentManager().beginTransaction()                .replace(R.id.fl_info_framlayout, targetFragment, "fragment")                .setTransitionStyle(FragmentTransaction.TRANSIT_FRAGMENT_FADE)                .commit();    }}

以上基本上便是核心代码。

下面是关于Fragment：

MyBaseFragment：

package com.ut.radiobuttondynamicadd.fragment;import android.support.v4.app.Fragment;/** * Description: * Author：Giousa * Date：2016/4/29 * Email：giousa@chinayoutu.com */public class MyBaseFragment extends Fragment {}

UserFragment1：

package com.ut.radiobuttondynamicadd.fragment;import android.graphics.Color;import android.os.Bundle;import android.support.annotation.Nullable;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.TextView;/** * Description:我的界面 * Author：Giousa * Date：2016/4/28 * Email：giousa@chinayoutu.com */public class UserFragment1 extends MyBaseFragment {    @Nullable    @Override    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {        TextView textView = new TextView(getContext());        textView.setText("第一个界面");        textView.setTextColor(Color.RED);        return textView;    }}

剩下的同上。

存储Fragment的工厂类：

UserFragmentFactory

package com.ut.radiobuttondynamicadd.factory;import com.ut.radiobuttondynamicadd.fragment.MyBaseFragment;import com.ut.radiobuttondynamicadd.fragment.UserFragment1;import com.ut.radiobuttondynamicadd.fragment.UserFragment2;import com.ut.radiobuttondynamicadd.fragment.UserFragment3;import com.ut.radiobuttondynamicadd.fragment.UserFragment4;import com.ut.radiobuttondynamicadd.fragment.UserFragment5;import com.ut.radiobuttondynamicadd.fragment.UserFragment6;import com.ut.radiobuttondynamicadd.fragment.UserFragment7;import com.ut.radiobuttondynamicadd.fragment.UserFragment8;import java.util.HashMap;/** * Description: * Author：Giousa * Date：2016/4/29 * Email：giousa@chinayoutu.com */public class UserFragmentFactory {    private static HashMap<Integer, MyBaseFragment> hashMap = new HashMap<Integer, MyBaseFragment>();    public static MyBaseFragment createFragment(int arg0) {        //内存中如果已经有当前根据索引生成的fragment,复用之前的fragment对象,内存中没有索引指向的fragment对象,创建        MyBaseFragment fragment = hashMap.get(arg0);        if(fragment!=null){            return fragment;        }else{            switch (arg0) {                case 0:                    fragment = new UserFragment1();                    break;                case 1:                    fragment = new UserFragment2();                    break;                case 2:                    fragment = new UserFragment3();                    break;                case 3:                    fragment = new UserFragment4();                    break;                case 4:                    fragment = new UserFragment5();                    break;                case 5:                    fragment = new UserFragment6();                    break;                case 6:                    fragment = new UserFragment7();                    break;                case 7:                    fragment = new UserFragment8();                    break;            }            //集合将创建过的fragment,管理起来            hashMap.put(arg0, fragment);            return fragment;        }    }}

布局文件：

<?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:gravity="center"              android:orientation="vertical">    <RadioGroup        android:id="@+id/radiogroup_single"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:layout_below="@+id/iv_single"        android:orientation="horizontal"/>    <!--RadioButton实现点击切换Fragment-->    <FrameLayout        android:id="@+id/fl_info_framlayout"        android:layout_width="200dp"        android:layout_height="200dp"        android:background="#4400ffff"/></LinearLayout>

这里顺便补充一句，项目中我虽然采用了动态添加RadioButton，但是下面可以按钮点击左右切换数据的界面并非是用Fragment，而是使用ViewPager实现的。

~Demo下载~

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