IUpdateProxy/XUpdate --- (update) ---> IUpdateChecker --->（Request the server to get the latest version information）---> IUpdateParser ---> (Parse the data returned by the server, and build the UpdateEntity）---> IUpdateProxy ---> (If there is no latest version, end it directly, otherwise proceed to the following process）

    ---Automatic mode---> IUpdateDownloader ---> （Download the latest app apk） ---> Install application

    ---Non automatic mode---> IUpdatePrompter ---> Prompt for version update

                                                        ---> click Update ---> IUpdateDownloader ---> （Download the latest app apk） ---> Jump to application installation UI

                                                        ---> Click cancel or ignore ---> End

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

dependencies {
  ...
  // androidx project
  implementation 'com.github.xuexiangjys:XUpdate:2.1.4'
}

dependencies {
  ...
  // support project
  implementation 'com.github.xuexiangjys:XUpdate:1.1.6'
}

XUpdate.get()
    .debug(true)
    .isWifiOnly(true)                                               // By default, only version updates are checked under WiFi
    .isGet(true)                                                    // The default setting uses Get request to check versions
    .isAutoMode(false)                                              // The default setting is non automatic mode
    .param("versionCode", UpdateUtils.getVersionCode(this))         // Set default public request parameters
    .param("appKey", getPackageName())
    .setOnUpdateFailureListener(new OnUpdateFailureListener() {     // Set listening for version update errors
        @Override
        public void onFailure(UpdateError error) {
            if (error.getCode() != CHECK_NO_NEW_VERSION) {          // Handling different errors
                ToastUtils.toast(error.toString());
            }
        }
    })
    .supportSilentInstall(true)                                     // Set whether silent installation is supported. The default is true
    .setIUpdateHttpService(new OKHttpUpdateHttpService())           // This must be set! Realize the network request function.
    .init(this);                                                    // This must be initialized

XUpdate.get().setILogger(new ILogger() {
    @Override
    public void log(int priority, String tag, String message, Throwable t) {
        // Realize the function of logging
    }
});

/**
 * The default file encryption calculation uses MD5 encryption
 *
 * @author xuexiang
 * @since 2019-09-06 14:21
 */
public class DefaultFileEncryptor implements IFileEncryptor {
    /**
     * Encrypted files
     *
     * @param file
     * @return
     */
    @Override
    public String encryptFile(File file) {
        return Md5Utils.getFileMD5(file);
    }

    /**
     * Verify that the file is valid (whether the encryption is consistent)
     *
     * @param encrypt The encrypted value, is considered to be valid if encrypt is empty.
     * @param file    File to be verified
     * @return Whether the document is valid
     */
    @Override
    public boolean isFileValid(String encrypt, File file) {
        return TextUtils.isEmpty(encrypt) || encrypt.equalsIgnoreCase(encryptFile(file));
    }
}

XUpdate.newBuild(getActivity())
        .updateUrl(mUpdateUrl)
        .update();

{
  "Code": 0,
  "Msg": "",
  "UpdateStatus": 1,
  "VersionCode": 3,
  "VersionName": "1.0.2",
  "ModifyContent": "1、优化api接口。\r\n2、添加使用demo演示。\r\n3、新增自定义更新服务API接口。\r\n4、优化更新提示界面。",
  "DownloadUrl": "https://raw.githubusercontent.com/xuexiangjys/XUpdate/master/apk/xupdate_demo_1.0.2.apk",
  "ApkSize": 2048,
  "ApkMd5": ""
}

XUpdate.newBuild(getActivity())
        .updateUrl(mUpdateUrl)
        .isAutoMode(true) // If you need to be completely unattended and update automatically, you need root permission【required for silent installation】
        .update();

XUpdate.newBuild(getActivity())
        .updateUrl(mUpdateUrl)
        .supportBackgroundUpdate(true)
        .update();

XUpdate.newBuild(getActivity())
        .updateUrl(mUpdateUrl)
        .promptThemeColor(ResUtils.getColor(R.color.update_theme_color))
        .promptButtonTextColor(Color.WHITE)
        .promptTopResId(R.mipmap.bg_update_top)
        .promptWidthRatio(0.7F)
        .update();

XUpdate.newBuild(getActivity())
        .updateUrl(mUpdateUrl3)
        .updateParser(new CustomUpdateParser()) // Set up a custom version update parser
        .update();

public class CustomUpdateParser implements IUpdateParser {
    @Override
    public UpdateEntity parseJson(String json) throws Exception {
        CustomResult result = JsonUtil.fromJson(json, CustomResult.class);
        if (result != null) {
            return new UpdateEntity()
                    .setHasUpdate(result.hasUpdate)
                    .setIsIgnorable(result.isIgnorable)
                    .setVersionCode(result.versionCode)
                    .setVersionName(result.versionName)
                    .setUpdateContent(result.updateLog)
                    .setDownloadUrl(result.apkUrl)
                    .setSize(result.apkSize);
        }
        return null;
    }
}

XUpdate.newBuild(getActivity())
        .updateUrl(mUpdateUrl3)
        .updateChecker(new DefaultUpdateChecker() {
            @Override
            public void onBeforeCheck() {
                super.onBeforeCheck();
                CProgressDialogUtils.showProgressDialog(getActivity(), "查询中...");
            }
            @Override
            public void onAfterCheck() {
                super.onAfterCheck();
                CProgressDialogUtils.cancelProgressDialog(getActivity());
            }
        })
        .updateParser(new CustomUpdateParser())
        .updatePrompter(new CustomUpdatePrompter(getActivity()))
        .update();


public class CustomUpdatePrompter implements IUpdatePrompter {

    private Context mContext;

    public CustomUpdatePrompter(Context context) {
        mContext = context;
    }

    @Override
    public void showPrompt(@NonNull UpdateEntity updateEntity, @NonNull IUpdateProxy updateProxy, @NonNull PromptEntity promptEntity) {
        showUpdatePrompt(updateEntity, updateProxy);
    }

    /**
     * Show custom version update prompter
     *
     * @param updateEntity
     * @param updateProxy
     */
    private void showUpdatePrompt(final @NonNull UpdateEntity updateEntity, final @NonNull IUpdateProxy updateProxy) {
        String updateInfo = UpdateUtils.getDisplayUpdateInfo(mContext, updateEntity);

        new AlertDialog.Builder(mContext)
                .setTitle(String.format("是否升级到%s版本？", updateEntity.getVersionName()))
                .setMessage(updateInfo)
                .setPositiveButton("升级", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        updateProxy.startDownload(updateEntity, new OnFileDownloadListener() {
                            @Override
                            public void onStart() {
                                HProgressDialogUtils.showHorizontalProgressDialog(mContext, "下载进度", false);
                            }

                            @Override
                            public void onProgress(float progress, long total) {
                                HProgressDialogUtils.setProgress(Math.round(progress * 100));
                            }

                            @Override
                            public boolean onCompleted(File file) {
                                HProgressDialogUtils.cancel();
                                return true;
                            }

                            @Override
                            public void onError(Throwable throwable) {
                                HProgressDialogUtils.cancel();
                            }
                        });
                    }
                })
                .setNegativeButton("暂不升级", null)
                .setCancelable(false)
                .create()
                .show();
    }

XUpdate.newBuild(getActivity())
        .apkCacheDir(PathUtils.getAppExtCachePath())  // Set the root directory of the download cache
        .build()
        .download(mDownloadUrl, new OnFileDownloadListener() {   // Set the download address and download listener
            @Override
            public void onStart() {
                HProgressDialogUtils.showHorizontalProgressDialog(getContext(), "下载进度", false);
            }

            @Override
            public void onProgress(float progress, long total) {
                HProgressDialogUtils.setProgress(Math.round(progress * 100));
            }

            @Override
            public boolean onCompleted(File file) {
                HProgressDialogUtils.cancel();
                ToastUtils.toast("apk下载完毕，文件路径：" + file.getPath());
                return false;
            }

            @Override
            public void onError(Throwable throwable) {
                HProgressDialogUtils.cancel();
            }
        });

_XUpdate.startInstallApk(getContext(), FileUtils.getFileByPath(PathUtils.getFilePathByUri(getContext(), data.getData()))); // Set the path where the file is located

-keep class com.xuexiang.xupdate.entity.** { *; }

// Note: if you use a custom API parser for parsing, you need to add confusion to your custom API entities. Here are the custom API entity obfuscation rules configured in this demo:
-keep class com.xuexiang.xupdatedemo.entity.** { *; }