打开AndroidMainfest，然后在应用程序标签中添加verionCode, versionName，并确保debug able等于false:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
package="...">

<application
    ...
    android:debuggable="false"
    android:versionCode="1"
    android:versionName="1.0"
    tools:ignore="HardcodedDebugMode">
    ...
</application>

然后打开构建。gradle (module:app)确保verionCode, versionName退出和minsdk <=您的移动sdk:

defaultConfig {
    ...
    minSdkVersion 19
    targetSdkVersion 28
    versionCode 1
    versionName "1.0"
   ...
}

查阅资料来源:https://developer.android.com/studio/publish/

https://developer.android.com/studio/publish/preparing &

https://developer.android.com/studio/publish/versioning &

和https://developer.android.com/studio/publish/app-signing

我也面临着同样的问题。 在我的应用程序中有服务。 即使在应用程序卸载后，服务仍在后台运行，在执行应用程序强制停止后，收到应用程序已卸载的消息。 然后我安装了应用程序，没有任何问题。

我遇到了类似的问题，这是因为我试图在使用相同apk的先前版本的手机上安装apk，而两个apk没有使用相同的证书进行签名。我的意思是，当我使用相同的证书时，我能够覆盖以前的安装，但当我在不同版本之间更改证书时，安装就不可能了。您是否使用相同的证书?

我也遇到了同样的问题，即App显示为正在安装，但当点击图标时不会启动。经过一些头部撞击，我发现我已经愚蠢地放置了' android:exported="false" '为我的主启动器活动在AndroidManifest文件....一旦我删除它，应用程序启动正常。

I had a similar situation.I was able to install app in debug mode using USB but not a signed version. I was able to install signed version on other phone, but not on my device. Numerous reasons and solutions did not help me. But one direction I got from a solution "uninstall for all users". What I did is to again install app in debug mode using USB connection, go to app details and "uninstall for all users" from right top 3 dots - to remove debug version. This looks like cleared all kinds of references. I usually do a normal uninstall.

现在我能够在设备上获得签名APK并成功安装。

确保考虑到以下建议:

Your build variants and Flavors should be same(App installed and new one), usually release Signature file must be the same(*.jks file) The version you set in build.gradle or AndroidManifest have greater value compared to current version(it is recommended to set version in build.gradle) URL is correct(doesn't have typo) and server is reachable(WebService/WebMethod/WIFI is running/available and ...) File downloaded completely File saved correctly into desired directory Setting for Data and Type in setDataAndType is correct