draggrid简单用法——实现频道管理

来源：互联网发布：手机淘宝怎么修改地址编辑：程序博客网时间：2024/06/02 06:37

1：导入依赖到自己工程下的gradle

com.github.andyoom:draggrid:v1.0.1

2.在项目的build.gradle中添加
allprojects {
repositories {
jcenter()
//下面这句才是加上的，上面的自带的
maven {url "https://jitpack.io"}
}
}

3.权限

<uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS" />

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

<uses-permission android:name="android.permission.VIBRATE"/>

4：在Activity下主要代码：

//按钮点击跳转到控制界面
public void button(View view){

if (list ==null){//判断集合中是否已有数据，没有则创建
list =new ArrayList<>();
//第一个是显示的条目，第二个参数是否显示
list.add(new ChannelBean("热点",true));
list.add(new ChannelBean("军事",true));
list.add(new ChannelBean("八卦",true));
list.add(new ChannelBean("游戏",true));
list.add(new ChannelBean("宠物",true));
list.add(new ChannelBean("汽车",false));
list.add(new ChannelBean("热卖",false));
list.add(new ChannelBean("外卖",false));
list.add(new ChannelBean("条目1",false));
list.add(new ChannelBean("条目2",false));
list.add(new ChannelBean("条目3",false));
list.add(new ChannelBean("条目4",false));
ChannelActivity.startChannelActivity(MainActivity.this, list);
}else if (jsonStr!=null){//当判断保存的字符串不为空的时候，直接加载已经有了的字符串
ChannelActivity.startChannelActivity(MainActivity.this,jsonStr);
}
}
});
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode==ChannelActivity.REQUEST_CODE&&resultCode==ChannelActivity.RESULT_CODE) {

jsonStr = data.getStringExtra(ChannelActivity.RESULT_JSON_KEY);
} }

上方参数中显示为true，将会在频道管理中，我的频道里。

显示为false的将会在其他频道显示

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权限：

<uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"></uses-permission><uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"></uses-permission><uses-permission android:name="android.permission.VIBRATE"></uses-permission><application    android:allowBackup="true"

布局：

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    xmlns:app="http://schemas.android.com/apk/res-auto"    android:id="@+id/activity_main"    android:layout_width="match_parent"    android:layout_height="match_parent"    tools:context="com.bwie.draggriddemo.MainActivity">    <android.support.design.widget.TabLayout        android:id="@+id/mytab"        app:tabMode="scrollable"        android:layout_width="match_parent"        android:layout_height="wrap_content"        />    <ImageButton        android:id="@+id/imgBtn"        android:src="@mipmap/add_recipients_normal"        android:layout_alignParentRight="true"        android:layout_alignParentTop="true"        android:layout_width="wrap_content"        android:layout_height="wrap_content" /></RelativeLayout>

MainActivity ：

public class MainActivity extends AppCompatActivity implements View.OnClickListener {    private TabLayout mMytab;    private ImageButton mImgBtn;    private ArrayList<ChannelBean> channelBeens;    String jsonStr = "";    private Gson gson;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        initView();        initData();    }    private void initData(){        //准备栏目数据        channelBeens = new ArrayList<ChannelBean>();        channelBeens.add(new ChannelBean("热点",true));        channelBeens.add(new ChannelBean("军事",true));        channelBeens.add(new ChannelBean("八卦",true));        channelBeens.add(new ChannelBean("游戏",true));        channelBeens.add(new ChannelBean("宠物",true));        channelBeens.add(new ChannelBean("汽车",true));        channelBeens.add(new ChannelBean("热卖",true));        channelBeens.add(new ChannelBean("外卖",true));        channelBeens.add(new ChannelBean("条目1",true));        channelBeens.add(new ChannelBean("条目2",true));        channelBeens.add(new ChannelBean("条目3",false));        channelBeens.add(new ChannelBean("条目4",false));        channelBeens.add(new ChannelBean("条目5",false));        channelBeens.add(new ChannelBean("条目6",false));        channelBeens.add(new ChannelBean("条目7",false));        channelBeens.add(new ChannelBean("条目8",false));        //把选择的栏目（true）数据配置给tablayout        for (int i=0;i<channelBeens.size();i++){            if(channelBeens.get(i).isSelect()){                mMytab.addTab(mMytab.newTab().setText(channelBeens.get(i).getName()));            }        }    }    private void initView() {        mMytab = (TabLayout) findViewById(R.id.mytab);        mImgBtn = (ImageButton) findViewById(R.id.imgBtn);        mImgBtn.setOnClickListener(this);    }    @Override    public void onClick(View v) {        switch (v.getId()) {            default:                break;            case R.id.imgBtn:                ChannelActivity.startChannelActivity(MainActivity.this,channelBeens);                break;        }    }    @Override    protected void onActivityResult(int requestCode, int resultCode, Intent data) {        super.onActivityResult(requestCode, resultCode, data);        if(requestCode == ChannelActivity.REQUEST_CODE && resultCode == ChannelActivity.RESULT_CODE){//为true表示是频道管理回调回来的            jsonStr = data.getStringExtra(ChannelActivity.RESULT_JSON_KEY);//得到栏目管理的结果            Toast.makeText(this,jsonStr,Toast.LENGTH_SHORT).show();            Log.i("main",jsonStr);            mMytab.removeAllTabs();//清空之前的栏目            //把新选择的栏目结果更新到tablayout上            gson = new Gson();            //进行json解析            Type type= new TypeToken<ArrayList<ChannelBean>>(){}.getType();            channelBeens = gson.fromJson(jsonStr,type);            //遍历结果，更新tablayout            for (int i=0;i<channelBeens.size();i++){                if(channelBeens.get(i).isSelect()){                    mMytab.addTab(mMytab.newTab().setText(channelBeens.get(i).getName()));                }            }        }    }}

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