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這篇文章主要介紹Android如何實現app自動更新,文中介紹的非常詳細,具有一定的參考價值,感興趣的小伙伴們一定要看完!
1.配置:
1.1 AndroidManifest.xml中添加權限和FileProvider:
<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 新建文件(路徑: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 網絡請求 implementation 'com.google.code.gson:gson:2.8.2'//gson implementation "org.permissionsdispatcher:permissionsdispatcher:4.3.1"//權限 annotationProcessor "org.permissionsdispatcher:permissionsdispatcher-processor:4.3.1"//權限
2.這里以點擊按鈕進行更新為例:
2.1 核心代碼:
private int version; /* 更新進度條 */ private ProgressBar mProgress; private AlertDialog mDownloadDialog; -------------------------------------------------------------------------------------------------------------------- //點擊按鈕,檢查權限,,,檢查更新的方法 @NeedsPermission({Manifest.permission.READ_EXTERNAL_STORAGE, Manifest.permission.WRITE_EXTERNAL_STORAGE, Manifest.permission.REQUEST_INSTALL_PACKAGES}) protected void checkUpdate() { showLoadingDialog("檢測更新中..."); version = AppUpdateUtil.getAppVersionCode(this);//檢查當前版本號 // 調用方法,,,接口的具體實現,接收傳過來的參數,再調自己的方法, requestAppUpdate(version, new DataRequestListener<UpdateAppBean>() { @Override public void success(UpdateAppBean data) { // 返回的json,getStatus為0時,去下載apk文件,這里是下載apk文件的方法 updateApp(data.getData().getApk_url()); } @Override public void fail(String msg) { // 返回的json,getStatus為1時,提示:"已是最新版本!" SToast(msg); dismissLoadingDialog(); } }); } //檢查版本號,第一次請求(post),,,UpdateAppBean根據服務器返回生成 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("服務器連接失敗"); dismissLoadingDialog(); } }); } //如果有新版本,提示有新的版本,然后下載apk文件 private void updateApp(String apk_url) { dismissLoadingDialog(); DialogUtils.getInstance().showDialog(this, "發現新的版本,是否下載更新?", new DialogUtils.DialogListener() { @Override public void positiveButton() { downloadApp(apk_url); } }); } //下載apk文件并跳轉(第二次請求,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); // 測試過這里必須用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) { // 構造軟件下載對話框 AlertDialog.Builder builder = new AlertDialog.Builder(mContext); builder.setTitle("正在更新"); // 給下載對話框增加進度條 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> { //請求成功 void success(T data); //請求失敗 void fail(String msg); }
接下來是工具類,來自github,參考, https://github.com/vondear/RxTool
2.3 AppUpdateUtil:
/** * 獲取App版本碼 * * @param context 上下文 * @return App版本碼 */ public static int getAppVersionCode(Context context) { return getAppVersionCode(context, context.getPackageName()); }
2.4 IntentUtil:
public class IntentUtil { /** * 獲取安裝App(支持7.0)的意圖 * * @param context * @param filePath * @return */ public static Intent getInstallAppIntent(Context context, String filePath) { //apk文件的本地路徑 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; }
2.5 FileUtil:
/** * 將文件轉換成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.遇到的問題
9.0手機authorities配置出錯,導致無法安裝, 解決辦法:
1.項目中使用了Androidx,AndroidManifest.xml的配置中就必須使用androidx的fileprovider
2.這里的authorities與FileUtil.java中的要一樣,我就是字母P大寫了導致錯誤
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