简单的完成了下

android/src/main/java/top/jerryyan/RN/A/VersionUpgrade/DownLoadBroadcastReceiver.java

@@ -0,0 +1,44 @@
+package top.jerryyan.RN.A.VersionUpgrade;
+
+import android.app.DownloadManager;
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+import android.content.SharedPreferences;
+import android.database.Cursor;
+import android.net.Uri;
+
+import java.io.File;
+
+public class DownLoadBroadcastReceiver extends BroadcastReceiver {
+    @Override
+    public void onReceive(Context context, Intent intent) {
+        long currentDownloadId = intent.getLongExtra(DownloadManager.EXTRA_DOWNLOAD_ID, -1);
+        SharedPreferences sPreferences = context.getSharedPreferences("jerry_rn_a_version_upgrade", 0);
+        long refernece = sPreferences.getLong("downloadId", 0);
+        if (currentDownloadId == refernece) {
+            DownloadManager downloadManager = (DownloadManager) context.getSystemService(Context.DOWNLOAD_SERVICE);
+            Intent install = new Intent(Intent.ACTION_VIEW);
+            DownloadManager.Query queryById = new DownloadManager.Query();
+            queryById.setFilterById(currentDownloadId);
+            Cursor downloadCursor = downloadManager.query(queryById);
+            String filePath = null;
+            if(downloadCursor.moveToFirst()){
+                if(downloadCursor.getInt(downloadCursor.getColumnIndex(DownloadManager.COLUMN_STATUS)) == DownloadManager.STATUS_SUCCESSFUL){
+                    int fileNameIdx = downloadCursor.getColumnIndex(DownloadManager.COLUMN_LOCAL_FILENAME);
+                    filePath = downloadCursor.getString(fileNameIdx);
+                }else{
+                    downloadManager.remove(currentDownloadId);
+                    downloadCursor.close();
+                    return;
+                }
+                downloadCursor.close();
+            }
+            if(filePath == null) return;
+            File file = new File(filePath);
+            install.setDataAndType(Uri.fromFile(file), "application/vnd.android.package-archive");
+            install.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+            context.getApplicationContext().startActivity(install);
+        }
+    }
+}

android/src/main/java/top/jerryyan/RN/A/VersionUpgrade/UpgradeModule.java

@@ -1,5 +1,16 @@
 package top.jerryyan.RN.A.VersionUpgrade;
 
+import android.app.Activity;
+import android.app.DownloadManager;
+import android.content.Context;
+import android.content.Intent;
+import android.content.SharedPreferences;
+import android.net.Uri;
+import android.os.Build;
+import android.os.Environment;
+import android.provider.Settings;
+
+import com.facebook.react.bridge.Callback;
 import com.facebook.react.bridge.ReactApplicationContext;
 import com.facebook.react.bridge.ReactContextBaseJavaModule;
 import com.facebook.react.bridge.ReactMethod;
@@ -9,10 +20,15 @@ import java.util.Map;
 
 public class UpgradeModule extends ReactContextBaseJavaModule {
     private final ReactApplicationContext reactContext;
+    private String downloadUrl;
+    private String title = "应用更新中";
+    private final Activity activity;
+
 
     public UpgradeModule(ReactApplicationContext reactContext) {
         super(reactContext);
         this.reactContext = reactContext;
+        this.activity = reactContext.getCurrentActivity();
     }
 
     @Override
@@ -25,4 +41,43 @@ public class UpgradeModule extends ReactContextBaseJavaModule {
         final Map<String, Object> constants = new HashMap<>();
         return constants;
     }
+
+    @ReactMethod
+    public void setDownloadUrl(String downloadUrl) {
+        this.downloadUrl = downloadUrl;
+    }
+
+    @ReactMethod
+    public void setTitle(String title) {
+        this.title = title;
+    }
+
+    private boolean _hasPermissionToInstall() {
+        return activity != null && (Build.VERSION.SDK_INT < Build.VERSION_CODES.O || activity.getPackageManager().canRequestPackageInstalls());
+    }
+
+    private void _requestInstallPermission() {
+        if (activity == null) return;
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+            Uri packageURI = Uri.parse("package:" + activity.getPackageName());
+            Intent intent = new Intent(Settings.ACTION_MANAGE_UNKNOWN_APP_SOURCES, packageURI);
+            (activity).startActivityForResult(intent, 2);
+        }
+    }
+
+    @ReactMethod
+    public void startDownload() {
+        if (activity == null) return;
+        if (!this._hasPermissionToInstall()) this._requestInstallPermission();
+        DownloadManager downloadManager = (DownloadManager) activity.getSystemService(Context.DOWNLOAD_SERVICE);
+        Uri uri = Uri.parse(downloadUrl);
+        DownloadManager.Request request = new DownloadManager.Request(uri);
+        request.setAllowedNetworkTypes(DownloadManager.Request.NETWORK_MOBILE | DownloadManager.Request.NETWORK_WIFI);
+        request.setMimeType("application/vnd.android.package-archive");
+        request.setTitle(this.title);
+        request.setDestinationInExternalFilesDir(activity, Environment.DIRECTORY_DOWNLOADS, "");
+        long downloadId = downloadManager.enqueue(request);
+        SharedPreferences sharedPreferences = activity.getSharedPreferences("jerry_rn_a_version_upgrade", 0);
+        sharedPreferences.edit().putLong("downloadId", downloadId).apply();
+    }
 }