java - app crashes on real device due to udev rule error -
error shown follows:
com.android.ddmlib.adbcommandrejectedexception: insufficient permissions device: verify
enter code hereudev rules. see [http://developer.android.com/tools/device.html] more information. error while installing apk
the java code mainactivity shown below:
import android.manifest; import android.location.location; import android.support.v4.app.activitycompat; import android.support.v7.app.appcompatactivity; import android.os.bundle; import android.text.textutils; import android.view.view; import android.widget.button; import android.widget.edittext; import android.widget.textview; public class mainactivity extends appcompatactivity { edittext t1; edittext t2; textview textview; button calc; float lat1; float lon1; @override protected void oncreate(bundle savedinstancestate) { super.oncreate(savedinstancestate); setcontentview(r.layout.activity_main2); t1 = (edittext) findviewbyid(r.id.edittext1); t2 = (edittext) findviewbyid(r.id.edittext2); calc = (button) findviewbyid(r.id.button); textview = (textview) findviewbyid(r.id.textview); activitycompat.requestpermissions(mainactivity.this,new string[] {manifest.permission.access_fine_location},123); calc.setonclicklistener(new view.onclicklistener() { @override public void onclick(view view) { if(textutils.isempty(t1.gettext())) { lat1 = 0; } else { lat1 = float.parsefloat(t1.gettext().tostring()); } if(textutils.isempty(t2.gettext())) { lon1 =0; } else { lon1 = float.parsefloat(t2.gettext().tostring()); } float latt1 = (float) math.toradians(lat1); float lng1 = (float) math.toradians(lon1); geotracker tracker = new geotracker(getapplicationcontext()); location loc = tracker.getlocation(); if(loc !=null) { float latt2 = (float) loc.getlatitude(); float lng2 = (float) loc.getlongitude(); float dlon = lng2 - lng1; float dlat = latt2 - latt1; float = (float) (math.pow((math.sin(dlat / 2)), 2) + math.cos(latt1) * math.cos(latt2) * math.pow(math.sin(dlon / 2), 2)); float c = (float) (2 * math.atan2(math.sqrt(a), math.sqrt(1 - a))); float dist = (float) (6371 * c); textview.settext(" distance :"+ float.tostring(dist)); } } }); } } the geotracker class shown below:
package com.example.vishnu.location; import android.manifest; import android.content.context; import android.content.intent; import android.content.pm.packagemanager; import android.location.location; import android.location.locationlistener; import android.location.locationmanager; import android.os.bundle; import android.provider.settings; import android.support.v4.content.contextcompat; import android.widget.toast; /** * created vishnu-c on 8/13/17. */ public class geotracker implements locationlistener { context context; public geotracker(context c){ context = c; } public location getlocation(){ if(contextcompat.checkselfpermission(context, manifest.permission.access_fine_location) != packagemanager.permission_granted){ toast.maketext(context,"permission not granted",toast.length_short).show(); } locationmanager locationmanager =(locationmanager)context.getsystemservice(context.location_service); boolean isgpsenabled = locationmanager.isproviderenabled(locationmanager.gps_provider); if(isgpsenabled){ locationmanager.requestlocationupdates(locationmanager.gps_provider,6000,6,this); location loc = locationmanager.getlastknownlocation(locationmanager.gps_provider); return loc; } else{ toast.maketext(context,"please enable gps",toast.length_short).show(); } return null; } @override public void onlocationchanged(location location) { } @override public void onstatuschanged(string s, int i, bundle bundle) { } @override public void onproviderenabled(string s) { } @override public void onproviderdisabled(string s) { intent intent = new intent(settings.action_location_source_settings); } } the xml code shown below:
<?xml version="1.0" encoding="utf-8"?> <relativelayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" tools:context="com.example.vishnu.location.main2activity"> <button android:id="@+id/button" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerhorizontal="true" android:layout_centervertical="true" android:text="calculate" tools:layout_editor_absolutex="147dp" tools:layout_editor_absolutey="272dp" /> <edittext android:id="@+id/edittext1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignparentleft="true" android:layout_alignparentstart="true" android:layout_alignparenttop="true" android:layout_marginleft="70dp" android:layout_marginstart="70dp" android:layout_margintop="91dp" android:ems="10" android:inputtype="numbersigned|numberdecimal" android:hint="enter target lattitude" /> <edittext android:id="@+id/edittext2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignend="@+id/edittext1" android:layout_alignright="@+id/edittext1" android:layout_below="@+id/edittext1" android:layout_margintop="15dp" android:ems="10" android:inputtype="numbersigned|numberdecimal" android:hint="enter target longitude" /> <textview android:id="@+id/textview" android:layout_width="match_parent" android:layout_height="50dp" android:layout_alignparenttop="true" android:layout_margintop="32dp" /> </relativelayout> android manifest shown below:
<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.example.vishnu.location"> <uses-permission android:name="android.permission.access_fine_location" /> <application android:allowbackup="true" android:icon="@mipmap/ic_launcher" android:label="@string/app_name" android:roundicon="@mipmap/ic_launcher_round" android:supportsrtl="true" android:theme="@style/apptheme"> <activity android:name="mainactivity"> <intent-filter> <action android:name="android.intent.action.main" /> <category android:name="android.intent.category.launcher" /> </intent-filter> </activity> </application> </manifest>
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