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Android在线版本更新总结

Android在线版本更新总结

作者: townof1997 | 来源:发表于2019-06-21 14:44 被阅读123次

    步骤:
    1.配置:
    1.1 AndroidManifest.xml中添加权限和FileProvider:代码如下:

    <uses-permission android:name="android.permission.INTERNET"/>
        <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
        <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
        <uses-permission android:name="android.permission.REQUEST_INSTALL_PACKAGES" />
    ----------------------------------------------------------------------------------------------------------------------------------------------
    <provider
                android:name="androidx.core.content.FileProvider"
                android:authorities="com.fengzhi.wuyemanagement.fileprovider"
                android:grantUriPermissions="true"
                android:exported="false">
                <meta-data
                    android:name="android.support.FILE_PROVIDER_PATHS"
                    android:resource="@xml/file_paths" />
            </provider>
    

    1.2 在res文件夹下新建xml文件夹创建file_paths文件(路径:res\xml\file_paths.xml):

    <paths>
        <external-path path="." name="external_storage_root" />
    </paths>
    

    1.3 (app的)build.gradle:

    implementation "com.lzy.net:okgo:3.0.4"//okgo 网络请求
        implementation 'com.google.code.gson:gson:2.8.2'//gson
        implementation "org.permissionsdispatcher:permissionsdispatcher:4.3.1"//权限
        annotationProcessor "org.permissionsdispatcher:permissionsdispatcher-processor:4.3.1"//权限
    

    2.这里以点击按钮进行更新为例:
    2.1 核心代码:

       private int version;
        /* 更新进度条 */
        private ProgressBar mProgress;
        private AlertDialog mDownloadDialog;
    
    --------------------------------------------------------------------------------------------------------------------
    
        //点击按钮,检查权限,,,检查更新的方法
        @NeedsPermission({Manifest.permission.READ_EXTERNAL_STORAGE,
                Manifest.permission.WRITE_EXTERNAL_STORAGE,
                Manifest.permission.REQUEST_INSTALL_PACKAGES})
        protected void checkUpdate() {
            showLoadingDialog("检测更新中...");
            version = AppUpdateUtil.getAppVersionCode(this);//检查当前版本号
    //      调用方法,,,接口的具体实现,接收传过来的参数,再调自己的方法,
            requestAppUpdate(version, new DataRequestListener<UpdateAppBean>() {
                @Override
                public void success(UpdateAppBean data) {
    //                返回的json,getStatus为0时,去下载apk文件,这里是下载apk文件的方法
                    updateApp(data.getData().getApk_url());
                }
    
                @Override
                public void fail(String msg) {
    //                返回的json,getStatus为1时,提示:"已是最新版本!"
                    SToast(msg);
                    dismissLoadingDialog();
                }
            });
        }
    
        //检查版本号,第一次请求(post),,,UpdateAppBean根据服务器返回生成
        private void requestAppUpdate(int version, final DataRequestListener<UpdateAppBean> listener) {
            OkGo.<String>post(Const.HOST_URL + Const.UPDATEAPP).params("version", version).execute(new StringCallback() {
                @Override
                public void onSuccess(Response<String> response) {
                    Gson gson = new Gson();
                    UpdateAppBean updateAppBean = gson.fromJson(response.body(), UpdateAppBean.class);
                    if (updateAppBean.getStatus() == 0) {
                        listener.success(updateAppBean);
                    } else {
                        listener.fail(updateAppBean.getMsg());
                    }
                }
    
                @Override
                public void onError(Response<String> response) {
                    listener.fail("服务器连接失败");
                    dismissLoadingDialog();
                }
            });
        }
    
        //如果有新版本,提示有新的版本,然后下载apk文件
        private void updateApp(String apk_url) {
            dismissLoadingDialog();
            DialogUtils.getInstance().showDialog(this, "发现新的版本,是否下载更新?",
                    new DialogUtils.DialogListener() {
                @Override
                public void positiveButton() {
                    downloadApp(apk_url);
                }
            });
        }
    
        //下载apk文件并跳转(第二次请求,get)
        private void downloadApp(String apk_url) {
            OkGo.<File>get(apk_url).tag(this).execute(new FileCallback() {
                @Override
                public void onSuccess(Response<File> response) {
                    String filePath = response.body().getAbsolutePath();
                    Intent intent = IntentUtil.getInstallAppIntent(mContext, filePath);
    //                测试过这里必须用startactivity,不能用stratactivityforresult
                    mContext.startActivity(intent);
                    dismissLoadingDialog();
                    mDownloadDialog.dismiss();
                    mDownloadDialog=null;
                }
    
                @Override
                public void downloadProgress(Progress progress) {
    //                        showDownloadDialog();
    //                        mProgress.setProgress((int) (progress.fraction * 100));
                    if (mDownloadDialog == null) {
                        // 构造软件下载对话框
                        AlertDialog.Builder builder = new AlertDialog.Builder(mContext);
                        builder.setTitle("正在更新");
                        // 给下载对话框增加进度条
                        final LayoutInflater inflater = LayoutInflater.from(mContext);
                        View v = inflater.inflate(R.layout.item_progress, null);
                        mProgress = (ProgressBar) v.findViewById(R.id.update_progress);
                        builder.setView(v);
                        mDownloadDialog = builder.create();
                        mDownloadDialog.setCancelable(false);
                        mDownloadDialog.show();
                    }
                    mProgress.setProgress((int) (progress.fraction * 100));
                }
            });
        }
    

    2.2 DataRequestListener:

    public interface DataRequestListener<T> {
        //请求成功
        void success(T data);
        //请求失败
        void fail(String msg);
    }
    

    接下来是工具类,来自github,参考,https://github.com/vondear/RxTool

    2.3 AppUpdateUtil:2.4 IntentUtil:2.5 FileUtil:

     /**
         * 获取App版本码
         *
         * @param context 上下文
         * @return App版本码
         */
        public static int getAppVersionCode(Context context) {
            return getAppVersionCode(context, context.getPackageName());
        }
    
    public class IntentUtil {
    
        /**
         * 获取安装App(支持7.0)的意图
         *
         * @param context
         * @param filePath
         * @return
         */
        public static Intent getInstallAppIntent(Context context, String filePath) {
            //apk文件的本地路径
            File apkfile = new File(filePath);
            if (!apkfile.exists()) {
                return null;
            }
            Intent intent = new Intent(Intent.ACTION_VIEW);
            Uri contentUri = FileUtil.getUriForFile(context, apkfile);
            intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
                intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
            }
            intent.setDataAndType(contentUri, "application/vnd.android.package-archive");
            return intent;
        }
    
    /**
         * 将文件转换成uri(支持7.0)
         *
         * @param mContext
         * @param file
         * @return
         */
        public static Uri getUriForFile(Context mContext, File file) {
            Uri fileUri = null;
            if (Build.VERSION.SDK_INT >= 24) {
                fileUri = FileProvider.getUriForFile(mContext, mContext.getPackageName() + ".fileprovider", file);
            } else {
                fileUri = Uri.fromFile(file);
            }
            return fileUri;
        }
    

    3.遇到的问题
    9.0手机authorities配置出错,导致无法安装,
    解决办法:


    error_img.jpg

    1.项目中使用了Androidx,AndroidManifest.xml的配置中就必须使用androidx的fileprovider

    2.这里的authorities与FileUtil.java中的要一样,我就是字母P大写了导致错误


    error_2.jpg

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