apkmanager 优化

GoodMoney/app/src/main/java/com/mints/goodmoney/manager/DownloadApkManager.kt

@@ -104,13 +104,13 @@ object DownloadApkManager {
         PRDownloader.download(url, cachePath, apkName)
                 .build()
                 .setOnProgressListener { progress ->
-                    if (!activity!!.isFinishing()) {
+                    if (activity != null && !activity!!.isFinishing()) {
                         downloadProgressDialog?.setProgress(progress)
                     }
                 }
                 .start(object : OnDownloadListener {
                     override fun onDownloadComplete() {
-                        if (!activity!!.isFinishing()) {
+                        if (activity != null && !activity!!.isFinishing()) {
                             downloadProgressDialog?.dismiss()
                             try {
                                 mDownloadListener?.onDownloadSuccess(cachePath + apkName)
@@ -123,7 +123,7 @@ object DownloadApkManager {
                     }
 
                     override fun onError(error: Error) {
-                        if (!activity!!.isFinishing()) {
+                        if (activity != null && !activity!!.isFinishing()) {
                             downloadProgressDialog?.dismiss()
                             CacheUtil.clearAllCache(context)
                         }