Android版本更新代码实现

 本文讲的是Android版本更新的实现代码

相关帮助文章：https://blog.csdn.net/JiYaRuo/article/details/106922141

   
    //1.从后台获取版本信息实体
    Version version = model.getModel();
    //2.后台最新的版本号
    int versionCode = Integer.valueOf(version.getVersionCode()); 
    //3.当前版本< 后台最新版本 --> 更新
    if (AppUtils.getVersionCode(getApplication()) < versionCode ) { 
        showUpdate(version);
    } else {
      //直接进入主页面
    }


   /**
     * 显示更新的dialog
     */
    private void showUpdate(final Version version) {
        Dialog dialogUpdate = null;
        AlertDialog.Builder builder = new AlertDialog.Builder(this)
                .setTitle("更新")
                .setMessage("发现新版本" + version.getVersionName() + (version.getOnlyAllowLatestAppVersion() == 1 ? " 请升级" : ",是否更新"))
//				.setMessage("发现新版本" + version.getVersionName() + " 请升级"+"\n"+"更新内容："+"\n"+version.getInfo())
                .setPositiveButton("确定", new DialogInterface.OnClickListener() {

                    @Override
                    public void onClick(DialogInterface arg0, int arg1) {
                        update(version);
                    }
                });
        dialogUpdate = builder.create();
        dialogUpdate.setCancelable(false);
        dialogUpdate.show();
    }


   /**
     * 下载安装包然后安装
     * OkHttpUtils.getInstance().download ： 安装的方法
     */
    private void update(Version version) {
        Tools.showWaitDialog(this, "下载中");
        OkHttpUtils.getInstance().download(version.getDownLoadUrl(), new DownloadListener(FileUtils.getFilePath() + "/indentity", version.getVersionName() + ".apk") {
            @Override
            public void onUISuccess(File file) {
                if (file != null) {
                    Tools.dismissWaitDialog();
                    //下载完成，开始安装
                    Uri uri = null;
                    Intent intent = new Intent(Intent.ACTION_VIEW);
                    try {
                        if (Build.VERSION.SDK_INT >= 24) {//7.0 Android N
                            //com.xxx.xxx.fileprovider为上述manifest中provider所配置相同
                            uri = FileProvider.getUriForFile(mContext, "自己的包名.fileprovider", file);
                            intent.setAction(Intent.ACTION_INSTALL_PACKAGE);
                            intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);//7.0以后，系统要求授予临时uri读取权限，安装完毕以后，系统会自动收回权限，该过程没有用户交互
                            intent.setDataAndType(uri, "application/vnd.android.package-archive");
                            startActivity(intent);
                        } else {
                              //7.0以下
                              AppUtils.installApk(getApplicationContext(), file);//storage/emulated/0/identity/file/indentity/2.0.7.apk
                        }
                    } catch (IllegalArgumentException e) {
                        e.printStackTrace();
                    }catch (ActivityNotFoundException e){
                        e.printStackTrace();
                    }catch (Exception e){
                        e.printStackTrace();
                    }
                } else {
                    ToastUtil.shortShowCustom(WelcomeActivity.this,"apk下载失败");
                }
            }
            @Override
            public void onUIFailure(Exception e) {
                ToastUtil.shortShowCustom(WelcomeActivity.this,"下载失败");
                Tools.dismissWaitDialog();
            }
            @Override
            public void onUIProgress(Progress progress) {
                int ps = (int) (((float) progress.getCurrentBytes() / progress.getTotalBytes()) * 100);
                Tools.showWaitDialog(WelcomeActivity.this, "下载中" + (ps + "%"));
            }
        });
    }

2.版本更新Bean类

package com.cmcc.app.entity;
import java.io.Serializable;

/**
 * Created by JiYaRuo.
 */
public class Version  implements Serializable {

    //版本名字
    private String versionName;
    //版本号
    private int versionCode;
    //是否强制更新
    private int onlyAllowLatestAppVersion;
    //apk下载地址
    private String downLoadUrl;
    //md5
    private String md5;
    // 更新内容
    private String info;
    //apk大小
    private long apkSize;


    public String getVersionName() {
        return versionName;
    }

    public void setVersionName(String versionName) {
        this.versionName = versionName;
    }

    public int getVersionCode() {
        return versionCode;
    }

    public void setVersionCode(int versionCode) {
        this.versionCode = versionCode;
    }

    public int getOnlyAllowLatestAppVersion() {
        return onlyAllowLatestAppVersion;
    }

    public void setOnlyAllowLatestAppVersion(int onlyAllowLatestAppVersion) {
        this.onlyAllowLatestAppVersion = onlyAllowLatestAppVersion;
    }

    public String getDownLoadUrl() {
        return downLoadUrl;
    }

    public void setDownLoadUrl(String downLoadUrl) {
        this.downLoadUrl = downLoadUrl;
    }

    public void setInfo(String info) {
        this.info = info;
    }

    public String getInfo() {
        return info;
    }
}

3.在清单文件中appliction下加入provider( 不加的话安卓7.0以上的手机安装完成后会闪退)

4.在res---xml---下新建文件，file_paths.xml

这样就可以完成更新啦！