小例子demo(RadioGroup+Fragment软件框架的搭建)总结

最新推荐文章于 2019-06-16 14:59:13 发布

澹泊

最新推荐文章于 2019-06-16 14:59:13 发布

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分类专栏： Android_Study

本文链接：https://blog.youkuaiyun.com/fangjingjingll/article/details/80433507

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本文介绍了一种在Android应用中实现图标和文字切换效果的方法，并展示了如何通过XML样式简化布局文件，同时提供了Fragment基类的实现方式及一些实用的Fragment管理技巧。

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谷粒学院视频：

http://www.gulixueyuan.com/my/course/134/summary

http://www.gulixueyuan.com/course/explore/android?subCategory=AndroidCuttingEdge

1.图标check点击：

android:drawableTop="@drawable/rb_common_frame_drawable_selector"

rb_common_frame_drawable_selector.xml:

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

</selector>

2.文字check点击：

<item name="android:textColor">@drawable/bottom_textcolor_drawable_selector</item>

bottom_textcolor_drawable_selector.xml：

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_checked="false" android:color="#363636"/>
    <item android:state_checked="true" android:color="#3097FD"/>
</selector>

3.xml中相同的部分使用style:

 <RadioButton
            android:id="@+id/rb_common_frame"
            style="@style/bottom_tag_style"
            android:drawableTop="@drawable/rb_common_frame_drawable_selector"
            android:text="常用框架" />

        <RadioButton
            android:id="@+id/rb_thirdparty"
            style="@style/bottom_tag_style"
            android:drawableTop="@drawable/rb_thirdparty_drawable_selector"
            android:text="第三方" />

style:

  <style name="bottom_tag_style">
        <item name="android:layout_width">wrap_content</item>
        <item name="android:layout_height">wrap_content</item>
        <item name="android:layout_weight">1</item>

        <item name="android:button">@android:color/transparent</item>
        <item name="android:drawablePadding">3dp</item>
        <item name="android:gravity">center</item>


        <item name="android:textColor">@drawable/bottom_textcolor_drawable_selector</item>
        <item name="android:textSize">10sp</item>
    </style>

4.Alt+Shift+M : 代码--->方法

5. Fragment基类：BaseFragment

package com.venusjj.base;

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 2018/5/24.
 */

public abstract class BaseFragment extends Fragment {

    protected 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();
    }

    protected abstract View initView();

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

    protected void initData(){

    }
}

6.防止fragment横竖屏切换，导致重复加载：

android:configChanges="orientation|screenSize|keyboardHidden"

7.获取当前的fragment:

  private BaseFragment getFragment() {
        BaseFragment fragment=mBaseFragment.get(position);
        return fragment;
    }

8.显示当前的fragment,防止重复加载;

 /**
     *   性能优化
     * @param from
     * @param to
     */
    private void switchFrament(Fragment from, Fragment to) {
        if(from!=to){
            mContent=to;
            FragmentTransaction ft=getSupportFragmentManager().beginTransaction();
            if(!to.isAdded()){
                if(from!=null){
                    ft.hide(from);
                }
                if(to!=null){
                    ft.add(R.id.fl_content,to).commit();
                }
            }else{
                if(from!=null){
                    ft.hide(from);
                }
                if(to!=null){
                    ft.show(to).commit();
                }
            }
        }
    }