Which is the better way to define permission in android? - android

I want to start my activity ON_BOOT_COMPLETED. Now i am facing one strange problem.
If i specify boot permission outside of Receiver tag, outside of application tag. Activity gets started. following
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="16" />
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name="com.example.broadcaststaticdemo.MainActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<receiver android:name="com.example.broadcaststaticdemo.StartAppOnBoot" >
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
<category android:name="android.intent.category.HOME" />
</intent-filter>
If i specify permission inside receiver tag my activity does not get started.
following
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.broadcaststaticdemo"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="16" />
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name="com.example.broadcaststaticdemo.MainActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<receiver android:name="com.example.broadcaststaticdemo.StartAppOnBoot"
android:permission="android.permission.RECEIVE_BOOT_COMPLETED" >
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
<category android:name="android.intent.category.HOME" />
</intent-filter>
While i have used the second approach (permission inside receiver tag) in my other application it is working completely fine. So i am confused what is difference between specifying permission at application level and receiver level. I have seen android documentation where they have mentioned
The name of a permission that broadcasters must have to send a message to the broadcast receiver. If this attribute is not set, the permission set by the element's permission attribute applies to the broadcast receiver. If neither attribute is set, the receiver is not protected by a permission. which mean we can specify any where. Any help will be appriciated


When you use <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" /> it gives your application the ability to talk to interfaces that require the RECEIVE_BOOT_COMPLETE permission.
But when you assign the attribute android:permission in <receiver> you are stating that anything that interfaces with your broadcast receiver requires the permission RECEIVE_BOOT_COMPLETE. More info about it is here http://developer.android.com/guide/topics/manifest/receiver-element.html#prmsn.

Related

Service in binded Jar doesn't come up without "RECEIVE_BOOT_COMPLETED"

I have an App that uses a Service that I've added by a Bindable Jar.
Current state:
this Jar has an own Manifest (see below), when I don't touch anything on this Manifest everything works as it should.
Problem:
This Jar lets on Deployment to Device always its launer AppIcon on Device.
So my App leaves finaly two launcher icons, the one desired and the other from the Jar.
My Approach was to delete follow Part from Manifest:
android:theme="#style/AppTheme">
<activity
android:name=".ScanDemoActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
Doing this the App Crashed on BootUp with Error: BootReceiver not found ...
Deleting the next few Lines:
<receiver android:name="com.company.scandemo.BootReceiver">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED"/>
<category android:name="android.intent.category.HOME"/>
</intent-filter>
</receiver>
caused started correctly on bootUp, but the Service didn't come up on BOOT_COMPLETED, when I start the App via Launcher icon everything worked.
Wished Behaviour:
I want the Main App to leave only one launch Icon and startup correctly on Boot
Here is the Manifest:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.company.scandemo"
android:versionCode="1"
android:versionName="2.2" >
<uses-sdk
android:minSdkVersion="17"
android:targetSdkVersion="17" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
<uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme">
<activity
android:name=".ScanDemoActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<service android:name="com.company.scandemo.FloatingService" />
<receiver android:name="com.company.scandemo.BootReceiver">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED"/>
<category android:name="android.intent.category.HOME"/>
</intent-filter>
</receiver>
</application>
</manifest>

Permissions doesn't show when installing an app

I have an app on the app store and in the manifest file I have two permissions, but when I go to install the app on a phone or tablet it says the app doesn't require any special permissions. My manifest file is below. Why does it says there are no special permissions when there is?
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.howlinapps.battery.level"
android:versionCode="6"
android:versionName="1.05" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="18" />
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
<uses-permission android:name="com.android.alarm.permission.SET_ALARM" />
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name" >
<activity
android:name="com.howlinapps.battery.level.MainActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<action android:name="android.intent.action.ACTION_POWER_CONNECTED" />
<action android:name="android.intent.action.ACTION_POWER_DISCONNECTED" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name="com.howlinapps.battery.level.About"
android:theme="#android:style/Theme.Dialog" >
</activity>
<receiver android:name="com.howlinapps.battery.level.MyBroadcastReceiver" >
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
</intent-filter>
</receiver>
<service
android:name="MyService"
android:icon="#drawable/ic_launcher"
android:label="Battery level service" >
</service>
</application>
</manifest>

The permissions show up on the Play Store Web site. They are not showing up in the Play Store app for some reason. So long as your app is working -- meaning that you are getting the permissions -- this would appear to be a bug in the Play Store app and, therefore, is not your problem.

"No Launcher Activity found!" while launching a service on startup

I wrote a simple Service which should be invoked on startup.
I don't haver (or need) any activities to be invoked on startup, but only that service.
Here is my manifest - what am I doing wrong?
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.servicelistening"
android:versionCode="1"
android:versionName="1.0">
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="17" />
<uses-permission android:name="android.permission.READ_PHONE_STATE" />
<uses-permission android:name="android.permission.CALL_PHONE"/>
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<receiver android:name=".Index" >
<intent-filter>
<action android:name="android.intent.action.PHONE_STATE"/>
<action android:name="android.view.InputMethod" />
</intent-filter>
</receiver>
<receiver android:name=".StartupReceiver">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
<category android:name="android.intent.category.HOME"/>
</intent-filter>
</receiver>
<service android:name=".OnOffService" android:enabled="true"></service>
</application>
</manifest>

The “No Launcher Activity found!” message is not something that should throw you off, since you already know that no launcher activity is found. You can simply ignore this error. To launch your service, broadcast the intent that is needed, and your code will run. If you want, you can add a simple test activity that will test this - but really,
no further action is required.

can broadcast receveir work even when my app is closed

I am building a simple sms app , i want to open my app automaticaly when ever a new sms is received? is it even possible?
i am using broadcast receiver for this
what changes should i made in manifest?
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.message"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk android:minSdkVersion="15" />
<application
android:icon="#drawable/ic_launcher"
android:label="#string/app_name" >
<activity
android:name=".MessageActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
<receiver android:name=".SmsReceiver" >
<intent-filter>
<action android:name="android.provider.Telephony.SMS_RECEIVED" />
</intent-filter>
</receiver>
</activity>
<activity android:name=".Reply" >
</activity>
</application>
<uses-permission android:name="android.permission.READ_SMS" />
<uses-permission android:name="android.permission.SEND_SMS" />
<uses-permission android:name="android.permission.RECEIVE_SMS" />
</manifest>

you should move the receiver outside from the activity like this:
<application
android:icon="#drawable/ic_launcher"
android:label="#string/app_name" >
<activity
android:name=".MessageActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".Reply" >
</activity>
<receiver android:name=".SmsReceiver" >
<intent-filter>
<action android:name="android.provider.Telephony.SMS_RECEIVED" />
</intent-filter>
</receiver>
</application>

Under Android 3.0 and later, your broadcast is not guaranteed to be received unless the user has opened your application. The application does not have to remain opened, just to have been started once. This is caused by a flag (FLAG_EXCLUDE_STOPPED_PACKAGES) which is now part of most system broadcasts, which says the broadcast should not start a stopped application.

This was already answered in How to make android launch an application on received specific sms to keep it short: it is possible with BroadcastReceiver.

Can't Start App (Widget Behaviour)

I have made my own sms app with a reciver.
Now the emulator doesn'T start the app when run it via eclipse.
On my phone i can't press open after installing and the App Drawer doens't show my app.
the behaviour is like a widget
MY Manifest:
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.korn.websms"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk android:minSdkVersion="8" />
<application
android:icon="#drawable/ic_launcher"
android:label="#string/app_name" >
<activity
android:name=".WebSMSActivity"
android:label="#string/app_name" >
</activity>
<receiver android:name=".SmsReceiver" android:exported="true" >
<intent-filter android:priority="999">
<action android:name="android.provider.Telephony.SMS_RECEIVED" />
</intent-filter>
</receiver>
</application>
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.SEND_SMS"/>
<uses-permission android:name="android.permission.RECEIVE_SMS"/>
<uses-permission android:name="android.permission.READ_SMS"/>
<uses-permission android:name="android.permission.READ_CONTACTS"/>
</manifest>

you haven't declared a Main and Launcher activity that would be launched when the app is installed.
this should be declared within your main activity
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>

You are missing a couple of lines from your manifest if you are looking to launch your app from an icon on the screen...
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
The first one (MAIN) means that this activity is the entry point of the application, when you launch the application, this activity is created.
The second one (LAUNCHER) means that it should show up in the Launcher as a top level app.

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