AlertDialog弹框apk版本升级

最新推荐文章于 2021-05-25 21:23:43 发布

原创最新推荐文章于 2021-05-25 21:23:43 发布 · 548 阅读

CC 4.0 BY-SA版权

本文介绍了一个具体的Android应用开发案例，包括如何使用XUtils3.0进行网络请求、数据解析及文件下载等操作，并展示了自定义适配器实现列表视图的全过程。

<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS" />
<uses-permission android:name="android.permission.WRITE_INTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_INTERNAL_STORAGE" />

public class Uris {

    public static final String uri = "http://mapp.qzone.qq.com/cgi-bin/mapp/mapp_subcatelist_qq?yyb_cateid=-10&categoryName=%E8%85%BE%E8%AE%AF%E8%BD%AF%E4%BB%B6&pageNo=1&pageSize=20&type=app&platform=touch&network_type=unknown&resolution=412x732";
}

引用xutils3.0的包

public class MyApplicalion extends Application {
    //初始化xUtils
    @Override
    public void onCreate() {
        super.onCreate();
        x.Ext.init(this);
    }
}

在清单文件中添加Application

public class MyAdapter extends BaseAdapter {

    private List<AppBean> mList;
    private Context mContext;

    public MyAdapter(List<AppBean> list, Context context) {
        mList = list;
        mContext = context;
    }

    @Override
    public int getCount() {
        return mList.size();
    }

    @Override
    public Object getItem(int position) {
        return mList.get(position);
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {

        ViewHolder holder;
        if (convertView == null){
            convertView = View.inflate(mContext, R.layout.item,null);
            holder = new ViewHolder();
            holder.mTextView = (TextView) convertView.findViewById(R.id.title_text);
            convertView.setTag(holder);
        }else
            holder = (ViewHolder) convertView.getTag();

        holder.mTextView.setText(mList.get(position).getName());
        return convertView;
    }

    class ViewHolder{
        TextView mTextView;
    }
}

public class MainActivity extends AppCompatActivity {

    private XListView lv;
    private List<AppBean> list = new ArrayList<AppBean>();
    private String path = Environment.getExternalStorageDirectory()+ File.separator;
    private ProgressDialog progressdialog;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        this.requestWindowFeature(Window.FEATURE_NO_TITLE);
        setContentView(R.layout.activity_main);
        initView();
        initData();
    }

    private void initView() {

        lv = (XListView) findViewById(R.id.lv);
    }

    private void initData() {
        RequestParams params = new RequestParams(Uris.uri);
        x.http().get(params, new Callback.CommonCallback<String>() {
            @Override
            public void onSuccess(String result) {
                String s = result.substring(0,result.length()-1);
                Gson gson = new Gson();
                Bean bean = gson.fromJson(s, Bean.class);
                list = bean.getApp();
                lv.setAdapter(new MyAdapter(list, MainActivity.this));

                lv.setOnItemClickListener(new AdapterView.OnItemClickListener() {
                    @Override
                    public void onItemClick(AdapterView<?> parent, View view, final int position, long id) {
                      new AlertDialog.Builder(MainActivity.this)
                              .setTitle("网络选择")
                              .setIcon(R.mipmap.ic_launcher)
                              .setSingleChoiceItems(new String[]{"wifi", "手机流量"}, 0, new DialogInterface.OnClickListener() {
                                  @Override
                                  public void onClick(DialogInterface dialog, int which) {
                                      switch (which){
                                          case 0:
                                              new AlertDialog.Builder(MainActivity.this)
                                                      .setTitle("版本更新")
                                                      .setMessage("现在检查到新版本，是否更新?")
                                                      .setNegativeButton("取消", new DialogInterface.OnClickListener() {
                                                          @Override
                                                          public void onClick(DialogInterface dialog, int which) {
                                                              dialog.dismiss();
                                                          }
                                                      })
                                                      .setPositiveButton("确定", new DialogInterface.OnClickListener() {
                                                          @Override
                                                          public void onClick(DialogInterface dialog, int which) {
                                                              progressdialog = new ProgressDialog(MainActivity.this);
                                                              RequestParams params = new RequestParams(list.get(position).getUrl());
                                                              params.setSaveFilePath(path+list.get(position).getName()+".apk");
                                                              x.http().post(params, new ProgressCallback<File>() {
                                                                  @Override
                                                                  public void onSuccess(File result) {
                                                                      Toast.makeText(MainActivity.this,"下载成功",Toast.LENGTH_SHORT).show();
                                                                      Intent intent = new Intent(Intent.ACTION_VIEW);
                                                                      intent.setDataAndType(Uri.fromFile(result),"application/vnd.android.package-archive");
                                                                      startActivity(intent);
                                                                  }

                                                                  @Override
                                                                  public void onError(Throwable ex, boolean isOnCallback) {
                                                                      Toast.makeText(MainActivity.this,"下载失败"+ex.getMessage(),Toast.LENGTH_SHORT).show();
                                                                      Log.i("rjz",ex.getMessage());
                                                                      if (ex instanceof HttpException) { //网络错误
                                                                          HttpException httpEx = (HttpException) ex;
                                                                          int responseCode = httpEx.getCode();
                                                                          String responseMsg = httpEx.getMessage();
                                                                          String errorResult = httpEx.getResult();
                                                                          //...
                                                                      } else { //其他错误
                                                                          //...
                                                                      }
                                                                  }

                                                                  @Override
                                                                  public void onCancelled(CancelledException cex) {

                                                                  }

                                                                  @Override
                                                                  public void onFinished() {

                                                                  }

                                                                  @Override
                                                                  public void onWaiting() {

                                                                  }

                                                                  @Override
                                                                  public void onStarted() {

                                                                  }

                                                                  @Override
                                                                  public void onLoading(long total, long current, boolean isDownloading) {
                                                                      progressdialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
                                                                      progressdialog.setMessage("下载中");
                                                                      progressdialog.show();
                                                                      progressdialog.setMax((int) total);
                                                                      progressdialog.setProgress((int) current);
                                                                  }
                                                              });

                                                          }
                                                      })
                                                      .show();
                                              break;
                                          case 1:
                                              Intent intent = new Intent(Settings.ACTION_WIFI_SETTINGS);
                                              startActivity(intent);
                                              break;

                                      }
                                  }
                              }).show();

                    }
                });
            }


            @Override
            public void onError(Throwable ex, boolean isOnCallback) {

            }

            @Override
            public void onCancelled(CancelledException cex) {

            }

            @Override
            public void onFinished() {

            }
        });
    }

}