第三方完成频道管理

1.在app的build.gradle中添加

com.github.andyoom:draggrid:v1.0.1

2.在项目的build.gradle中添加

maven {url "https://jitpack.io"}

如下所示的位置：

allprojects {
    repositories {
        jcenter()
        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"/>

4.

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

public class MainActivity extends AppCompatActivity {

    private List list;

    private String jsonStr;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

    }

        //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("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(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(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);

            } }

    }

可以用gson解析如下所示

  gson.fromJson(jsonStr, new TypeToken<List<TypeBean>>() {}.getType())