可拖动的gridview控件的初级用法

1：导入依赖到自己工程下的gradle 

  compile '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
    <!-- 在SDCard中创建与删除文件权限 -->
    <uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS" />
    <!-- 往SDCard写入数据权限 -->
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

    <!-- 震动权限 -->

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

在XML文件里的代码如下:

 <android.support.design.widget.TabLayout

        android:id="@+id/mytab"

        app:tabMode="scrollable"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        />

    <ImageButton//这是跳转到频道管理的一个图片

        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" />

在MainActiyitv的代码如下:

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()));

                }

            }

        }

    }

}