Dear Friends,
I am trying to inflate View class from xml resource. Moreover i am
following all the conventions of Building Custom Components given on
Android developer site. I have defined View class as subclass of My
Activity class which is as follows:
public class MyApp extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
}
public static class MyAppView extends View {
Bitmap menu;
int menudemo[];
public MyAppView(Context context) {
super(context);
// TODO Auto-generated constructor stub
menudemo = new int[] {R.drawable.menu,R.drawable.icon};
}
@Override
public void onDraw(Canvas canvas) {
Resources res = getResources();
canvas.drawBitmap(BitmapFactory.decodeResource(res,
menudemo[0]),
0, 0, null);
System.gc();
invalidate();
}
}
}
My main.xml is as follows:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/
android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<view class="com.myapp.MyApp$MyAppView"
android:id="@+id/my"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
/>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello"
/>
</LinearLayout>
I do not know what is wrong with my coding, but when i am running this
application i am getting run time exception like:
03-25 12:28:50.842: ERROR/AndroidRuntime(1107): FATAL EXCEPTION: main
03-25 12:28:50.842: ERROR/AndroidRuntime(1107):
java.lang.RuntimeException: Unable to start activity
ComponentInfo{com.myapp/com.myapp.MyApp}:
android.view.InflateException: Binary XML file line #7: Error
inflating class com.myapp.MyApp$MyAppView
03-25 12:28:50.842: ERROR/AndroidRuntime(1107): at
android.app.ActivityThread.performLaunchActivity(ActivityThread.java:
2663)
03-25 12:28:50.842: ERROR/AndroidRuntime(1107): at
android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:
2679)
03-25 12:28:50.842: ERROR/AndroidRuntime(1107): at
android.app.ActivityThread.access$2300(ActivityThread.java:125)
03-25 12:28:50.842: ERROR/AndroidRuntime(1107): at
android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
03-25 12:28:50.842: ERROR/AndroidRuntime(1107): at
android.os.Handler.dispatchMessage(Handler.java:99)
03-25 12:28:50.842: ERROR/AndroidRuntime(1107): at
android.os.Looper.loop(Looper.java:123)
03-25 12:28:50.842: ERROR/AndroidRuntime(1107): at
android.app.ActivityThread.main(ActivityThread.java:4627)
03-25 12:28:50.842: ERROR/AndroidRuntime(1107): at
java.lang.reflect.Method.invokeNative(Native Method)
03-25 12:28:50.842: ERROR/AndroidRuntime(1107): at
java.lang.reflect.Method.invoke(Method.java:521)
03-25 12:28:50.842: ERROR/AndroidRuntime(1107): at
com.android.internal.os.ZygoteInit
$MethodAndArgsCaller.run(ZygoteInit.java:868)
03-25 12:28:50.842: ERROR/AndroidRuntime(1107): at
com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
03-25 12:28:50.842: ERROR/AndroidRuntime(1107): at
dalvik.system.NativeStart.main(Native Method)
03-25 12:28:50.842: ERROR/AndroidRuntime(1107): Caused by:
android.view.InflateException: Binary XML file line #7: Error
inflating class com.myapp.MyApp$MyAppView
03-25 12:28:50.842: ERROR/AndroidRuntime(1107): at
android.view.LayoutInflater.createView(LayoutInflater.java:503)
03-25 12:28:50.842: ERROR/AndroidRuntime(1107): at
android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:565)
03-25 12:28:50.842: ERROR/AndroidRuntime(1107): at
android.view.LayoutInflater.rInflate(LayoutInflater.java:618)
03-25 12:28:50.842: ERROR/AndroidRuntime(1107): at
android.view.LayoutInflater.inflate(LayoutInflater.java:407)
03-25 12:28:50.842: ERROR/AndroidRuntime(1107): at
android.view.LayoutInflater.inflate(LayoutInflater.java:320)
03-25 12:28:50.842: ERROR/AndroidRuntime(1107): at
android.view.LayoutInflater.inflate(LayoutInflater.java:276)
03-25 12:28:50.842: ERROR/AndroidRuntime(1107): at
com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:
198)
03-25 12:28:50.842: ERROR/AndroidRuntime(1107): at
android.app.Activity.setContentView(Activity.java:1647)
03-25 12:28:50.842: ERROR/AndroidRuntime(1107): at
com.myapp.MyApp.onCreate(MyApp.java:23)
03-25 12:28:50.842: ERROR/AndroidRuntime(1107): at
android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:
1047)
03-25 12:28:50.842: ERROR/AndroidRuntime(1107): at
android.app.ActivityThread.performLaunchActivity(ActivityThread.java:
2627)
03-25 12:28:50.842: ERROR/AndroidRuntime(1107): ... 11 more
03-25 12:28:50.842: ERROR/AndroidRuntime(1107): Caused by:
java.lang.NoSuchMethodException: MyAppView(Context,AttributeSet)
03-25 12:28:50.842: ERROR/AndroidRuntime(1107): at
java.lang.Class.getMatchingConstructor(Class.java:660)
03-25 12:28:50.842: ERROR/AndroidRuntime(1107): at
java.lang.Class.getConstructor(Class.java:477)
03-25 12:28:50.842: ERROR/AndroidRuntime(1107): at
android.view.LayoutInflater.createView(LayoutInflater.java:475)
03-25 12:28:50.842: ERROR/AndroidRuntime(1107): ... 21 more
03-25 12:28:50.882: WARN/ActivityManager(71): Force finishing
activity com.myapp/.MyApp
03-25 12:28:51.392: WARN/ActivityManager(71): Activity pause timeout
for HistoryRecord{441c18d0 com.myapp/.MyApp}
03-25 12:29:01.981: WARN/ActivityManager(71): Activity destroy timeout
for HistoryRecord{441c18d0 com.myapp/.MyApp}
03-25 12:33:50.912: INFO/Process(1107): Sending signal. PID: 1107 SIG:
9
Please help me to solve this RunTime Exception.
Thanks & Regards.
Atul Prakash Singh
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