Android应用未安装（APK）

Question

I tried porting one of my old simple Java apps to Android and exporting as an APK. It installs and runs fine on the Emulator, but when I attempt to install it on a real Android phone, it just says "Application not installed"

I am using the ADT for Eclipse plugin to export the APK.

I assume the issue must be with the manifest since the program won't even install nor launch (either that or the export process itself). I haven't tried doing it from the command line yet.... I've been avoiding it. I will try that if no one can find any problems with my manifest:

<?xml version="1.0" encoding="utf-8"?>
<manifest package="bg.java.mobile"
  android:installLocation="auto" android:versionCode="1" android:versionName="1.0" xmlns:android="http://schemas.android.com/apk/res/android">
    <application 
    android:icon="@drawable/icon" android:label="Heat Index" android:logo="@drawable/icon">
    <activity android:name="AppLauncher"
         android:label="@string/app_name" android:multiprocess="true" android:launchMode="singleInstance" android:screenOrientation="user">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    </application>
</manifest>

Answer 1

Have you enabled 'unknown sources' on your phone? (Settings->Applications) Else you can't install apk files. http://i.stack.imgur.com/Zqr5G.png