I'm working on my final project ,please help me ,i have to submit it till end of next week im working on an app that filter incoming calls based of context, at first i want to take incoming number and pass to an Activity to search number on dataBase and return the result ,i dont know how to get variable from a broadcastReceiver and pass to it again ,i mean get and pass variable to just 1 broadcastReceiver so i decided to use 2 BroadCastReceiver ,on of them take the incoming number and pass to my mainclass and my mainCalss search incoming number on database and pass the result to filterCall broadcast class,but i faced with problem .please help me,tHX
This is my callActivity Broadcast class that take incoming number and pass to my Mainclass
public class CallblockingActivity extends BroadcastReceiver {
Context context = null;
private static final String TAG = "Phone call";
private ITelephony telephonyService;
String incommingNumber;
Intent intent;
String n;
@Override
public void onReceive(Context context, Intent intent) {
Log.v(TAG, "Receving....");
TelephonyManager telephony = (TelephonyManager)
context.getSystemService(Context.TELEPHONY_SERVICE);
try {
Class c = Class.forName(telephony.getClass().getName());
Method m = c.getDeclaredMethod("getITelephony");
m.setAccessible(true);
telephonyService = (ITelephony) m.invoke(telephony);
Bundle b = intent.getExtras();
incommingNumber = b.getString(TelephonyManager.EXTRA_INCOMING_NUMBER);
Log.v(TAG, incommingNumber);
Intent i = new Intent(context, Mainclass.class);
i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
i.putExtra("n",incommingNumber);
context.startActivity(i);
Log.v(TAG, incommingNumber);
}
catch (Exception e) {
e.printStackTrace();
}
}
}
And this is my mainClass that take incoming number from CallBlockingActivity broadcast class and search on database and return a boolean value
public class Mainclass extends Activity{
Context context = null;
Boolean isit= false;
String TAG;
public void onCreate(Bundle savedInstanceState) {
Log.v(TAG,"onCreate");
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Intent b= getIntent();
String incomiingnumber1= b.getStringExtra("n");
Log.v(TAG,incomiingnumber1 + "incomenuber from broadcast receiver");
DataBaseBON searching= new DataBaseBON(Mainclass.this);
searching.open();
isit= searching.searchnumber(incomiingnumber1);
String ss= new Boolean(isit).toString();
Toast.makeText(getApplicationContext(), ss, Toast.LENGTH_SHORT);
Log.v(TAG, ss+ "yeeeeeeees it is it");
searching.close();
// I think My problem is here
Intent in = new Intent(context, FilterCall.class);
Bundle bb = new Bundle();
bb.putString("keyvalue", "ss");
in.putExtras(bb);
startActivity(in);
}
}
And this is my Filter BroadcastClass that reject the call or set the phone on silent mode.
public class FilterCall extends BroadcastReceiver {
private ITelephony telephonyService;
String TAG;
@Override
public void onReceive(Context context, Intent intent) {
// TODO Auto-generated method stub
Log.v(TAG, "Filtering...");
TelephonyManager telephony = (TelephonyManager)
context.getSystemService(Context.TELEPHONY_SERVICE);
try {
Class c = Class.forName(telephony.getClass().getName());
Method m = c.getDeclaredMethod("getITelephony");
m.setAccessible(true);
telephonyService = (ITelephony) m.invoke(telephony);
String result = intent.getStringExtra("keyvalue");
if (result=="true") {
try {
telephonyService.silenceRinger();
telephonyService.endCall();
} catch (RemoteException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
catch (Exception e) {
e.printStackTrace();
}
}
}
I am faced with this problem:
08-05 16:58:50.468: W/IInputConnectionWrapper(1500): showStatusIcon on inactive InputConnection
08-05 16:58:50.958: V/(1500): Filtering...
08-05 16:58:51.118: V/Phone call(1500): Receving....
08-05 16:58:51.118: V/Phone call(1500): +60172214866
08-05 16:58:51.138: V/Phone call(1500): +60172214866
08-05 16:58:51.168: V/(1500): onCreate
08-05 16:58:51.248: V/(1500): +60172214866incomenuber from broadcast receiver
08-05 16:58:51.278: I/Database(1500): SQLiteDatabase open path: /data/data/com.vahid.davoudi/databases/databasebon.db
08-05 16:58:51.338: V/(1500): trueyeeeeeeees it is it
08-05 16:58:51.338: I/Database(1500): SQLiteDatabase close path: /data/data/com.vahid.davoudi/databases/databasebon.db
08-05 16:58:51.348: A/dalvikvm(1500): Exception!!! threadid=1: thread exiting with uncaught exception (group=0x4001d858)
08-05 16:58:51.388: E/AndroidRuntime(1500): FATAL EXCEPTION: main
08-05 16:58:51.388: E/AndroidRuntime(1500): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.vahid.davoudi/com.vahid.davoudi.Mainclass}: java.lang.NullPointerException
08-05 16:58:51.388: E/AndroidRuntime(1500): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2663)
08-05 16:58:51.388: E/AndroidRuntime(1500): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
08-05 16:58:51.388: E/AndroidRuntime(1500): at android.app.ActivityThread.access$2300(ActivityThread.java:125)
08-05 16:58:51.388: E/AndroidRuntime(1500): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
08-05 16:58:51.388: E/AndroidRuntime(1500): at android.os.Handler.dispatchMessage(Handler.java:99)
08-05 16:58:51.388: E/AndroidRuntime(1500): at android.os.Looper.loop(Looper.java:123)
08-05 16:58:51.388: E/AndroidRuntime(1500): at android.app.ActivityThread.main(ActivityThread.java:4627)
08-05 16:58:51.388: E/AndroidRuntime(1500): at java.lang.reflect.Method.invokeNative(Native Method)
08-05 16:58:51.388: E/AndroidRuntime(1500): at java.lang.reflect.Method.invoke(Method.java:521)
08-05 16:58:51.388: E/AndroidRuntime(1500): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:858)
08-05 16:58:51.388: E/AndroidRuntime(1500): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
08-05 16:58:51.388: E/AndroidRuntime(1500): at dalvik.system.NativeStart.main(Native Method)
08-05 16:58:51.388: E/AndroidRuntime(1500): Caused by: java.lang.NullPointerException
08-05 16:58:51.388: E/AndroidRuntime(1500): at android.content.ComponentName.<init>(ComponentName.java:75)
08-05 16:58:51.388: E/AndroidRuntime(1500): at android.content.Intent.<init>(Intent.java:2690)
08-05 16:58:51.388: E/AndroidRuntime(1500): at com.vahid.davoudi.Mainclass.onCreate(Mainclass.java:39)
08-05 16:58:51.388: E/AndroidRuntime(1500): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
08-05 16:58:51.388: E/AndroidRuntime(1500): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
08-05 16:58:51.388: E/AndroidRuntime(1500): ... 11 more
08-05 17:03:51.408: W/PrintK(1500): m.vahid.davoudi(1500) sends SIGKILL to m.vahid.davoudi(1500)
And this is my manifest
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.vahid.davoudi"
android:versionCode="1"
android:versionName="1.0" >
<uses-permission android:name="android.permission.MODIFY_PHONE_STATE" />
<uses-permission android:name="android.permission.CALL_PHONE" />
<uses-permission android:name="android.permission.READ_PHONE_STATE" />
<uses-sdk android:minSdkVersion="8" />
<application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name" >
<activity
android:name=".Mainclass"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
<activity
android:name=".CallBlockingOrginalActivity"
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=".ViewDatabase"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.VIEWDB" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
<receiver android:name=".CallblockingActivity">
<intent-filter >
<action android:name="android.intent.action.PHONE_STATE" />
</intent-filter>
</receiver>
<receiver android:name=".FilterCall">
<intent-filter android:priority="100" >
<action android:name="android.intent.action.PHONE_STATE" />
</intent-filter>
</receiver>
</application>
</manifest>
You have a nullPointerException at line 39 of Mainclass.java
It is possible that "b" returns null
Intent b = getIntent();
add
if(b != null) {
//code involving the use of b
}