Application crashes by installing APK while running from Android Studio works perfectly

Question

I recently updated Android Studio to 2.3 and SDK to 25. Now when I run application from Android Studio on my mobile or emulator it is working perfectly but when I generate APK or get APK from App and install on device it crashes.

apply plugin: 'com.android.application'
    android {
compileSdkVersion 25
buildToolsVersion "25.0.2"
defaultConfig {
    applicationId "lovestar.lycamobile"
    minSdkVersion 15
    targetSdkVersion 25
    versionCode 1
    versionName "1.0"
    testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
    release {
        minifyEnabled false
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
    }
}

}

dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
    exclude group: 'com.android.support', module: 'support-annotations'
})
compile 'com.android.support:appcompat-v7:25.2.0'
compile 'com.android.support.constraint:constraint-layout:1.0.2'
testCompile 'junit:junit:4.12'

}

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="lovestar.lycamobile">
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<application
    android:allowBackup="true"
    android:icon="@mipmap/lycalogo"
    android:label="@string/app_name"
    android:supportsRtl="true"
    android:theme="@style/AppTheme">
    <activity android:name="lovestar.lycamobile.MainActivity">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity android:name="lovestar.lycamobile.Lyca"></activity>
</application>

Answer 1

I faced this problem 2-3 days ago. It happens because of Instant Run Feature. Most recent code of App is not properly build on APK So rebuild APK from Android Studio Menu

To solve this:

1. Use Build APK option from Android Studio Menu and install in Mobile.

If Above Step does nothing See Step 2

2. Usually it's AndroidManifest.xml problem that does not have proper package name or activity with MAIN intent was not properly defined. That's easy fix.