Hi,
I have the following code in Oncreate of my activity:
************************************************************************************
static String linkUrl = "http://www.google.com/";;
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
PowerManager pm = (PowerManager) getSystemService
(Context.POWER_SERVICE);
PowerManager.WakeLock wl = pm.newWakeLock
(PowerManager.SCREEN_DIM_WAKE_LOCK, "My Tag");
wl.acquire();
try {
URL connectURL = new URL(linkUrl);
HttpURLConnection conn = (HttpURLConnection)
connectURL.openConnection();
DataInputStream dis = new DataInputStream
(conn.getInputStream
());
byte[] data = new byte[1024];
int len = dis.read(data, 0, 1024);
dataText = new String(data, 0, len);
}
catch(Exception e)
{
Log.e(TAG, "Exception");
return;
}
TextView bodyText = (EditText) findViewById
(R.id.android_fetchtext);
bodyText.setText(dataText);
setContentView(R.layout.notes_fetch);
wl.release();
}
************************************************************************************
I declared the following permissions in manifest:
************************************************************************************
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.WAKE_LOCK"/>
************************************************************************************
Here is my xml layout file:
************************************************************************************
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/
android"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<ListView android:id="@+id/android:fetchlist"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
<TextView android:id="@+id/android:fetchtext"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
</LinearLayout>
************************************************************************************
Problem is, application goes to force close with following error:
************************************************************************************
10-19 22:11:49.404: DEBUG/FetchData(715): Entered OnCreate
10-19 22:11:49.413: DEBUG/FetchData(715): Set URL
10-19 22:11:49.435: DEBUG/FetchData(715): HttpURLConnection
10-19 22:11:49.464: DEBUG/FetchData(715): DIS
10-19 22:11:56.013: DEBUG/FetchData(715): Read
--------------------------------
10-19 22:11:59.191: WARN/ActivityManager(574): Launch timeout has
expired, giving up wake lock!
----------------------------------
10-19 22:11:59.307: WARN/ActivityManager(574): Activity idle timeout
for HistoryRecord{438d4478 com.android.demo.notepad3/.FetchData}
-----------------------------------
10-19 22:12:01.455: DEBUG/AndroidRuntime(715): Shutting down VM
10-19 22:12:01.455: WARN/dalvikvm(715): threadid=3: thread exiting
with uncaught exception (group=0x4001aa28)
10-19 22:12:01.465: ERROR/AndroidRuntime(715): Uncaught handler:
thread main exiting due to uncaught exception
10-19 22:12:01.834: ERROR/AndroidRuntime(715):
java.lang.RuntimeException: Unable to start activity ComponentInfo
{com.android.demo.notepad3/com.android.demo.notepad3.FetchData}:
java.lang.NullPointerException
10-19 22:12:01.834: ERROR/AndroidRuntime(715): at
android.app.ActivityThread.performLaunchActivity(ActivityThread.java:
2401)
10-19 22:12:01.834: ERROR/AndroidRuntime(715): at
android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:
2417)
10-19 22:12:01.834: ERROR/AndroidRuntime(715): at
android.app.ActivityThread.access$2100(ActivityThread.java:116)
10-19 22:12:01.834: ERROR/AndroidRuntime(715): at
android.app.ActivityThread$H.handleMessage(ActivityThread.java:1794)
10-19 22:12:01.834: ERROR/AndroidRuntime(715): at
android.os.Handler.dispatchMessage(Handler.java:99)
10-19 22:12:01.834: ERROR/AndroidRuntime(715): at
android.os.Looper.loop(Looper.java:123)
10-19 22:12:01.834: ERROR/AndroidRuntime(715): at
android.app.ActivityThread.main(ActivityThread.java:4203)
10-19 22:12:01.834: ERROR/AndroidRuntime(715): at
java.lang.reflect.Method.invokeNative(Native Method)
10-19 22:12:01.834: ERROR/AndroidRuntime(715): at
java.lang.reflect.Method.invoke(Method.java:521)
10-19 22:12:01.834: ERROR/AndroidRuntime(715): at
com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run
(ZygoteInit.java:791)
10-19 22:12:01.834: ERROR/AndroidRuntime(715): at
com.android.internal.os.ZygoteInit.main(ZygoteInit.java:549)
10-19 22:12:01.834: ERROR/AndroidRuntime(715): at
dalvik.system.NativeStart.main(Native Method)
10-19 22:12:01.834: ERROR/AndroidRuntime(715): Caused by:
java.lang.NullPointerException
10-19 22:12:01.834: ERROR/AndroidRuntime(715): at
com.android.demo.notepad3.FetchData.onCreate(FetchData.java:97)
10-19 22:12:01.834: ERROR/AndroidRuntime(715): at
android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:
1123)
10-19 22:12:01.834: ERROR/AndroidRuntime(715): at
android.app.ActivityThread.performLaunchActivity(ActivityThread.java:
2364)
10-19 22:12:01.834: ERROR/AndroidRuntime(715): ... 11 more
10-19 22:12:02.124: INFO/Process(574): Sending signal. PID: 715 SIG: 3
10-19 22:12:02.134: INFO/dalvikvm(715): threadid=7: reacting to signal
3
10-19 22:12:02.134: ERROR/dalvikvm(715): Unable to open stack trace
file '/data/anr/traces.txt': Permission denied
10-19 22:12:02.675: INFO/ARMAssembler(574): generated
scanline__00000077:03515104_00001001_00000000 [ 64 ipp] (84 ins) at
[0x2447f0:0x244940] in 3552128 ns
************************************************************************************
Any help is deeply appreciated.
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