CODEWITHSUNDEEP
androidandroid-intent
user2255598
user2255598

Reputation: 23

Android app doesn't launch the main activity and says app isnt installed

So im kinda new to android programming and i dont really know why i cant run the main activity when i have a permission tag under the activity. this is my code under the manifest file:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.lab08b_awahla"
android:versionCode="1"
android:versionName="1.0" >

<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="com.example.DANGEROUS_ACTION" />

<permission
    android:name="com.example.DANGEROUS_ACTION"
    android:label="permission"
    android:protectionLevel="dangerous" />

<uses-sdk
    android:minSdkVersion="8"
    android:targetSdkVersion="17" />

<application
    android:allowBackup="true"
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >
    <activity
        android:name="com.example.lab08b_awahla.MainActivity"
        android:label="@string/app_name"
        android:permission="com.example.DANGEROUS_ACTION" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
        <intent-filter>
            <action android:name="com.example.DANGEROUS_ACTION" />

            <category android:name="android.intent.category.DEFAULT" />
        </intent-filter>
    </activity>
</application>

</manifest>

Upvotes: 1

Views: 1380

Answers (2)

Code-Apprentice
Code-Apprentice

Reputation: 83517

According to the docs for the <activity> tag

android:permission
The name of a permission that clients must have to launch the activity or otherwise get it to respond to an intent. If a caller of startActivity() or startActivityForResult() has not been granted the specified permission, its intent will not be delivered to the activity.

This leads me to think that you misunderstand the use of this attribute.

Upvotes: 1

Marek R
Marek R

Reputation: 37512

This is obvious. If you are providing a security tag for activity anyone who wants to launch this activity has to have such privilege. Home screen app doesn't have (even don't known) your permission tag so this is a problem.

Upvotes: 3

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