功能[自动获取更新]: 检查本地是否有更新包,并作出相应的处理

Vera-Firefly · Sep 7, 2024 · a1baa38 · a1baa38
1 parent 7d53270
commit a1baa38
Show file tree

Hide file tree

Showing 2 changed files with 49 additions and 6 deletions.
diff --git a/app_pojavlauncher/src/main/java/com/firefly/feature/UpdateLauncher.java b/app_pojavlauncher/src/main/java/com/firefly/feature/UpdateLauncher.java
@@ -28,6 +28,8 @@
 import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
+import java.nio.file.Files;
+import java.nio.file.Path;
 
 public class UpdateLauncher {
     private static final String GITHUB_API = "https://api.github.com/repos/Vera-Firefly/Pojav-Glow-Worm/releases/latest";
@@ -46,7 +48,35 @@ public UpdateLauncher(Context context) {
         }
     }
 
-    public void checkForUpdates() {
+    public void checkCachedApk() {
+        File dir = context.getExternalFilesDir(Environment.DIRECTORY_DOWNLOADS);
+        File apkFile = new File(dir, "cache.apk");
+        File apkVersionFile = new File(dir, "apk_version");
+
+        if (apkFile.exists() && apkVersionFile.exists()) {
+            try {
+                String savedTagName = new String(java.nio.file.Files.readAllBytes(apkVersionFile.toPath()));
+                int savedVersionCode = Integer.parseInt(savedTagName.replaceAll("[^\\d]", ""));
+                if (savedVersionCode > localVersionCode) {
+                    installApk(apkFile);
+                } else {
+                    apkFile.delete();
+                    apkVersionFile.delete();
+                    checkForUpdates();
+                }
+            } catch (IOException | NumberFormatException e) {
+                e.printStackTrace();
+            }
+        } else if (apkFile.exists() || apkVersionFile.exists()) {
+            if (apkFile.exists()) apkFile.delete();
+            if (apkVersionFile.exists()) apkVersionFile.delete();
+            checkForUpdates();
+        } else {
+            checkForUpdates();
+        }
+    }
+
+    private void checkForUpdates() {
         new GetLatestReleaseTask().execute(GITHUB_API);
     }
 
@@ -126,20 +156,25 @@ private void showDownloadSourceDialog(String tagName, String versionName, String
 
                 if (apkUrl != null) {
                     dialog.dismiss();
-                    startDownload(apkUrl);
+                    startDownload(apkUrl, tagName);
                 }
             })
             .setNegativeButton(R.string.alertdialog_cancel, (dialog, id) -> dialog.cancel())
             .show();
     }
 
-    private void startDownload(String apkUrl) {
-        new DownloadApkTask().execute(apkUrl);
+    private void startDownload(String apkUrl, String tagName) {
+        new DownloadApkTask(tagName).execute(apkUrl);
     }
 
     private class DownloadApkTask extends AsyncTask<String, Integer, File> {
+        private String tagName;
         ProgressDialog progressDialog;
 
+        public DownloadApkTask(String tagName) {
+            this.tagName = tagName;
+        }
+
         @Override
         protected void onPreExecute() {
             progressDialog = new ProgressDialog(context);
@@ -159,7 +194,10 @@ protected File doInBackground(String... urls) {
             try {
                 Response response = client.newCall(request).execute();
                 if (response.isSuccessful()) {
-                    apkFile = new File(context.getExternalFilesDir(Environment.DIRECTORY_DOWNLOADS), "cache.apk");
+                    File dir = context.getExternalFilesDir(Environment.DIRECTORY_DOWNLOADS);
+                    apkFile = new File(dir, "cache.apk");
+                    File apkVersionFile = new File(dir, "apk_version");
+
                     InputStream inputStream = response.body().byteStream();
                     FileOutputStream outputStream = new FileOutputStream(apkFile);
                     byte[] buffer = new byte[1024];
@@ -173,6 +211,11 @@ protected File doInBackground(String... urls) {
                         publishProgress((int) ((totalBytesRead * 100) / totalBytes));
                     }
 
+                    FileOutputStream versionOutputStream = new FileOutputStream(apkVersionFile);
+                    versionOutputStream.write(tagName.getBytes());
+                    versionOutputStream.flush();
+                    versionOutputStream.close();
+
                     outputStream.flush();
                     outputStream.close();
                     inputStream.close();

diff --git a/app_pojavlauncher/src/main/java/net/kdt/pojavlaunch/LauncherActivity.java b/app_pojavlauncher/src/main/java/net/kdt/pojavlaunch/LauncherActivity.java
@@ -236,7 +236,7 @@ protected void onCreate(Bundle savedInstanceState) {
         mProgressLayout.observe(ProgressLayout.DOWNLOAD_VERSION_LIST);
         // 初始化并调用 UpdateLauncher 进行更新检查
         UpdateLauncher updateLauncher = new UpdateLauncher(this);
-        updateLauncher.checkForUpdates();
+        updateLauncher.checkCachedApk();
     }
 
     @Override