频道

public class MainActivity extends AppCompatActivity {
    private List<ChannelBean> list;
    private String jsonStr;
    private TextView tv;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        tv = (TextView) findViewById(R.id.tv);
        tv.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(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("太阳花",false));
                    list.add(new ChannelBean("九三",false));
                    list.add(new ChannelBean("八嘎",false));
                    list.add(new ChannelBean("色昂",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);
        } }
}

频道管理
首先在项目的build下注册
allprojects {
    repositories {
        jcenter()
//下面这句才是加上的，上面的自带 的
        maven {url "https://jitpack.io"}
    }


}
然后在app下的build中导入依赖
 compile 'com.github.andyoom:draggrid:v1.0.1'


然后在main类中就可以使用了，只要用集合将数据添加就可以了