漫画加载，频道管理(MainActivity)

最新推荐文章于 2021-05-25 20:19:09 发布

qq_39439715

最新推荐文章于 2021-05-25 20:19:09 发布

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本文介绍了一个基于Android平台的新闻阅读应用实现方案，重点讲解了使用TabLayout和ViewPager组件进行多频道切换的方法，并展示了如何通过ChannelActivity进行频道选择与定制。

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package com.example.zoukao3;

import android.content.Intent;
import android.content.SharedPreferences;
import android.support.design.widget.TabLayout;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.ListView;

import com.andy.library.ChannelActivity;
import com.andy.library.ChannelBean;

import java.util.ArrayList;
import java.util.List;

public class MainActivity extends AppCompatActivity {


    private TabLayout tablayout;
    private ViewPager viewpager;

    private List<ChannelBean> list = new ArrayList<>();
    private String jsonbeans;
    private SharedPreferences pre;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        tablayout = (TabLayout) findViewById(R.id.tablayout);
        viewpager = (ViewPager) findViewById(R.id.viewpager);
        viewpager.setAdapter(new Myadapter(getSupportFragmentManager()));
        tablayout.setupWithViewPager(viewpager);


    }


    public void getimag(View v) {
        //先获取一个oncilk的控件，放在main外
        // 1. 在app的gradle里面
        //compile 'com.github.andyoom:draggrid:v1.0.1'

        //    2.在项目的build.gradle中添加
        //        maven {url "https://jitpack.io"}放在  jcenter()下面


        pre = getSharedPreferences("channel", MODE_PRIVATE);
        jsonbeans = pre.getString("beans", null);
        if (jsonbeans == null) {
            lintList();
            ChannelActivity.startChannelActivity(this, list);
        } else {
            ChannelActivity.startChannelActivity(this, jsonbeans);
        }
    }

    private void lintList() {
        list.add(new ChannelBean("热点", true));
        list.add(new ChannelBean("视频", true));

        list.add(new ChannelBean("社会", false));
        list.add(new ChannelBean("娱乐", false));
        list.add(new ChannelBean("军事", false));
        list.add(new ChannelBean("图片", false));
        list.add(new ChannelBean("体育", false));
        list.add(new ChannelBean("汽车", false));
        list.add(new ChannelBean("国境", false));
    }


    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (requestCode == ChannelActivity.REQUEST_CODE && resultCode == ChannelActivity.RESULT_CODE) {
            jsonbeans = data.getStringExtra(ChannelActivity.RESULT_JSON_KEY);
            Log.e("onActivityResult", "onActivityResult: " + jsonbeans);
        }
    }

    @Override
    public void onBackPressed() {
        super.onBackPressed();
        SharedPreferences.Editor editor = pre.edit();
        editor.putString("beans", jsonbeans);
        editor.commit();
    }


}