I am working on android GCM to display some notification. It works fine. But when I add a code that could enable me to start the Home activity upon clicking the notification, it crashes. If I remove the PendingIntent It works fine but with no action.
Below is the code I am using
public class GcmMessageHandler extends GcmListenerService {
public static final int MESSAGE_NOTIFICATION_ID = 435345;
Intent intent = new Intent(GcmMessageHandler.this, HomeActivity.class);
int requestID = (int) System.currentTimeMillis(); //unique requestID to differentiate between various notification with same NotifId
int flags = PendingIntent.FLAG_CANCEL_CURRENT; // cancel old intent and create new one
PendingIntent pIntent = PendingIntent.getActivity(this, requestID, intent, flags);
#Override
public void onMessageReceived(String from, Bundle data) {
String message = data.getString("message");
createNotification(from, message);
}
// Creates notification based on title and body received
private void createNotification(String title, String body) {
Context context = getBaseContext();
NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(context)
.setSmallIcon(R.mipmap.ic_launcher)
.setContentTitle(title)
.setContentText(body)
.setContentIntent(pIntent);
mBuilder.setAutoCancel(true);
NotificationManager mNotificationManager = (NotificationManager) context
.getSystemService(Context.NOTIFICATION_SERVICE);
mNotificationManager.notify(MESSAGE_NOTIFICATION_ID, mBuilder.build());
}
}
and below is the error log I am getting.
04-14 23:24:59.165 14201-14201/abenakebe.yournet.com.abenakebe E/AndroidRuntime: FATAL EXCEPTION: main
04-14 23:24:59.165 14201-14201/abenakebe.yournet.com.abenakebe E/AndroidRuntime: Process: abenakebe.yournet.com.abenakebe, PID: 14201
04-14 23:24:59.165 14201-14201/abenakebe.yournet.com.abenakebe E/AndroidRuntime: java.lang.RuntimeException: Unable to instantiate service abenakebe.yournet.com.abenakebe.utils.GcmMessageHandler: java.lang.NullPointerException: Attempt to invoke virtual method 'android.content.ContentResolver android.content.Context.getContentResolver()' on a null object reference
04-14 23:24:59.165 14201-14201/abenakebe.yournet.com.abenakebe E/AndroidRuntime: at android.app.ActivityThread.handleCreateService(ActivityThread.java:3623)
04-14 23:24:59.165 14201-14201/abenakebe.yournet.com.abenakebe E/AndroidRuntime: at android.app.ActivityThread.access$2000(ActivityThread.java:198)
04-14 23:24:59.165 14201-14201/abenakebe.yournet.com.abenakebe E/AndroidRuntime: at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1759)
04-14 23:24:59.165 14201-14201/abenakebe.yournet.com.abenakebe E/AndroidRuntime: at android.os.Handler.dispatchMessage(Handler.java:102)
04-14 23:24:59.165 14201-14201/abenakebe.yournet.com.abenakebe E/AndroidRuntime: at android.os.Looper.loop(Looper.java:145)
04-14 23:24:59.165 14201-14201/abenakebe.yournet.com.abenakebe E/AndroidRuntime: at android.app.ActivityThread.main(ActivityThread.java:6837)
04-14 23:24:59.165 14201-14201/abenakebe.yournet.com.abenakebe E/AndroidRuntime: at java.lang.reflect.Method.invoke(Native Method)
04-14 23:24:59.165 14201-14201/abenakebe.yournet.com.abenakebe E/AndroidRuntime: at java.lang.reflect.Method.invoke(Method.java:372)
04-14 23:24:59.165 14201-14201/abenakebe.yournet.com.abenakebe E/AndroidRuntime: at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1404)
04-14 23:24:59.165 14201-14201/abenakebe.yournet.com.abenakebe E/AndroidRuntime: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1199)
04-14 23:24:59.165 14201-14201/abenakebe.yournet.com.abenakebe E/AndroidRuntime: Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'android.content.ContentResolver android.content.Context.getContentResolver()' on a null object reference
04-14 23:24:59.165 14201-14201/abenakebe.yournet.com.abenakebe E/AndroidRuntime: at android.content.ContextWrapper.getContentResolver(ContextWrapper.java:101)
04-14 23:24:59.165 14201-14201/abenakebe.yournet.com.abenakebe E/AndroidRuntime: at android.app.PendingIntent.getActivity(PendingIntent.java:286)
04-14 23:24:59.165 14201-14201/abenakebe.yournet.com.abenakebe E/AndroidRuntime: at android.app.PendingIntent.getActivity(PendingIntent.java:252)
04-14 23:24:59.165 14201-14201/abenakebe.yournet.com.abenakebe E/AndroidRuntime: at abenakebe.yournet.com.abenakebe.utils.GcmMessageHandler.<init>(GcmMessageHandler.java:25)
04-14 23:24:59.165 14201-14201/abenakebe.yournet.com.abenakebe E/AndroidRuntime: at java.lang.reflect.Constructor.newInstance(Native Method)
04-14 23:24:59.165 14201-14201/abenakebe.yournet.com.abenakebe E/AndroidRuntime: at java.lang.Class.newInstance(Class.java:1684)
04-14 23:24:59.165 14201-14201/abenakebe.yournet.com.abenakebe E/AndroidRuntime: at android.app.ActivityThread.handleCreateService(ActivityThread.java:3620)
04-14 23:24:59.165 14201-14201/abenakebe.yournet.com.abenakebe E/AndroidRuntime: at android.app.ActivityThread.access$2000(ActivityThread.java:198)
04-14 23:24:59.165 14201-14201/abenakebe.yournet.com.abenakebe E/AndroidRuntime: at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1759)
04-14 23:24:59.165 14201-14201/abenakebe.yournet.com.abenakebe E/AndroidRuntime: at android.os.Handler.dispatchMessage(Handler.java:102)
04-14 23:24:59.165 14201-14201/abenakebe.yournet.com.abenakebe E/AndroidRuntime: at android.os.Looper.loop(Looper.java:145)
04-14 23:24:59.165 14201-14201/abenakebe.yournet.com.abenakebe E/AndroidRuntime: at android.app.ActivityThread.main(ActivityThread.java:6837)
04-14 23:24:59.165 14201-14201/abenakebe.yournet.com.abenakebe E/AndroidRuntime: at java.lang.reflect.Method.invoke(Native Method)
04-14 23:24:59.165 14201-14201/abenakebe.yournet.com.abenakebe E/AndroidRuntime: at java.lang.reflect.Method.invoke(Method.java:372)
04-14 23:24:59.165 14201-14201/abenakebe.yournet.com.abenakebe E/AndroidRuntime: at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1404)
04-14 23:24:59.165 14201-14201/abenakebe.yournet.com.abenakebe E/AndroidRuntime: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1199)
You should move this two things at least to onCreate() or onMessageReceived()
Intent intent = new Intent(GcmMessageHandler.this, HomeActivity.class);
PendingIntent pIntent = PendingIntent.getActivity(this, requestID, intent, flags);
It crashes because this doesn't have Context before onCreate was called.
SHould be like this:
public class GcmMessageHandler extends GcmListenerService {
public static final int MESSAGE_NOTIFICATION_ID = 435345;
Intent intent;
int requestID = (int) System.currentTimeMillis(); //unique requestID to differentiate between various notification with same NotifId
int flags = PendingIntent.FLAG_CANCEL_CURRENT; // cancel old intent and create new one
PendingIntent pIntent;
#Override
public void onMessageReceived(String from, Bundle data) {
String message = data.getString("message");
intent = new Intent(GcmMessageHandler.this, HomeActivity.class);
pIntent = PendingIntent.getActivity(this, requestID, intent, flags);
createNotification(from, message);
}
// Creates notification based on title and body received
private void createNotification(String title, String body) {
Context context = getBaseContext();
NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(context)
.setSmallIcon(R.mipmap.ic_launcher)
.setContentTitle(title)
.setContentText(body)
.setContentIntent(pIntent);
mBuilder.setAutoCancel(true);
NotificationManager mNotificationManager = (NotificationManager) context
.getSystemService(Context.NOTIFICATION_SERVICE);
mNotificationManager.notify(MESSAGE_NOTIFICATION_ID, mBuilder.build());
}
}
Okay, so i finally got my button to start my new activity from the main activity. now, the problem i have is that when the new activity starts, the avd gives me an error saying "unfortunately, yourApp has stopped working". I tried for hours to detect the problem untill i began to comment some part of the new activity's code and then finally, i found it. keep in mind, that almost all the variables i used in the new activity also had common names and ids to those in the mainActivity, but this should not be the problem since i am not passing anything through both activities...at least not now. The problem was from the spinners. their declaration worked fine...i guess, the findViewByid method gave no problem, the arrayAdapter also gave no problems but i noticed that the app only shuts down when i remove the comments from the onItemSelectedListener and the setAdapters methods. i don't know why this happens. i used the same code for the mainActivity and it works perfectly. Dunno if i overloaded the onCreate method but as i said earlier, it works fine in the mainActivity. the new activity code for th onCreate method is given below...the other parts of the code works fine.
public class firstYearSecondSemester2 extends Activity implements AdapterView.OnItemSelectedListener {
private String[] grades;
public Spinner spinner0, spinner1, spinner2, spinner3, spinner4, spinner5, spinner6, spinner7, spinner8;
private double[] grade_values = {0.0, 5.0, 4.0, 3.0, 2.0, 1.0, 0.0};
//private Spinner gpa_grade0, gpa_grade1, gpa_grade2, gpa_grade3, gpa_grade4, gpa_grade5;
private double gpa_grade_0, gpa_grade_1, gpa_grade_2, gpa_grade_3, gpa_grade_4, gpa_grade_5, gpa_grade_6, gpa_grade_7, gpa_grade_8;
private TextView gpa, gpa_credits0, gpa_credits1, gpa_credits2, gpa_credits3, gpa_credits4,gpa_credits5, gpa_credits6, gpa_credits7,gpa_credits8;
private int gpa_credits_0, gpa_credits_1, gpa_credits_2, gpa_credits_3, gpa_credits_4, gpa_credits_5, gpa_credits_6, gpa_credits_7, gpa_credits_8;
public int[] spinner_ids;
public int spinner_check;
public int spinner_index;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_first_year_second_semester2);
spinner_ids = new int[9];
spinner_check = 0;
spinner_index = 0;
gpa = (TextView) findViewById(R.id.gpa_results_text);
grades = getResources().getStringArray(R.array.grades);
gpa_credits0 = (TextView) findViewById(R.id.gpa_credits_0);
gpa_credits1 = (TextView) findViewById(R.id.gpa_credits_1);
gpa_credits2 = (TextView) findViewById(R.id.gpa_credits_2);
gpa_credits3 = (TextView) findViewById(R.id.gpa_credits_3);
gpa_credits4 = (TextView) findViewById(R.id.gpa_credits_4);
gpa_credits5 = (TextView) findViewById(R.id.gpa_credits_5);
gpa_credits6 = (TextView) findViewById(R.id.gpa_credits_6);
gpa_credits7 = (TextView) findViewById(R.id.gpa_credits_7);
gpa_credits8 = (TextView) findViewById(R.id.gpa_credits_8);
spinner0 = (Spinner) findViewById(R.id.gradeSpinner0);
spinner1 = (Spinner) findViewById(R.id.gradeSpinner1);
spinner2 = (Spinner) findViewById(R.id.gradeSpinner2);
spinner3 = (Spinner) findViewById(R.id.gradeSpinner3);
spinner4 = (Spinner) findViewById(R.id.gradeSpinner4);
spinner5 = (Spinner) findViewById(R.id.gradeSpinner5);
spinner6 = (Spinner) findViewById(R.id.gradeSpinner6);
spinner7 = (Spinner) findViewById(R.id.gradeSpinner7);
spinner8 = (Spinner) findViewById(R.id.gradeSpinner8);
ArrayAdapter<String> each_grade = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, grades);
each_grade.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinner0.setAdapter(new NothingSelectedSpinnerAdapter(each_grade, R.layout.contact_spinner_row_nothing_selected,/* R.layout.contact_spinner_nothing_selected_dropdown, // Optional*/this));
spinner1.setAdapter(new NothingSelectedSpinnerAdapter(each_grade, R.layout.contact_spinner_row_nothing_selected,/* R.layout.contact_spinner_nothing_selected_dropdown, // Optional*/this));
spinner2.setAdapter(new NothingSelectedSpinnerAdapter(each_grade, R.layout.contact_spinner_row_nothing_selected,/* R.layout.contact_spinner_nothing_selected_dropdown, // Optional*/this));
spinner3.setAdapter(new NothingSelectedSpinnerAdapter(each_grade, R.layout.contact_spinner_row_nothing_selected,/* R.layout.contact_spinner_nothing_selected_dropdown, // Optional*/this));
spinner4.setAdapter(new NothingSelectedSpinnerAdapter(each_grade, R.layout.contact_spinner_row_nothing_selected,/* R.layout.contact_spinner_nothing_selected_dropdown, // Optional*/this));
spinner5.setAdapter(new NothingSelectedSpinnerAdapter(each_grade, R.layout.contact_spinner_row_nothing_selected,/* R.layout.contact_spinner_nothing_selected_dropdown, // Optional*/this));
spinner6.setAdapter(new NothingSelectedSpinnerAdapter(each_grade, R.layout.contact_spinner_row_nothing_selected,/* R.layout.contact_spinner_nothing_selected_dropdown, // Optional*/this));
spinner7.setAdapter(new NothingSelectedSpinnerAdapter(each_grade, R.layout.contact_spinner_row_nothing_selected,/* R.layout.contact_spinner_nothing_selected_dropdown, // Optional*/this));
spinner8.setAdapter(new NothingSelectedSpinnerAdapter(each_grade, R.layout.contact_spinner_row_nothing_selected,/* R.layout.contact_spinner_nothing_selected_dropdown, // Optional*/this));
spinner0.setOnItemSelectedListener(firstYearSecondSemester2.this);
spinner1.setOnItemSelectedListener(firstYearSecondSemester2.this);
spinner2.setOnItemSelectedListener(firstYearSecondSemester2.this);
spinner3.setOnItemSelectedListener(firstYearSecondSemester2.this);
spinner4.setOnItemSelectedListener(firstYearSecondSemester2.this);
spinner5.setOnItemSelectedListener(firstYearSecondSemester2.this);
spinner6.setOnItemSelectedListener(firstYearSecondSemester2.this);
spinner7.setOnItemSelectedListener(firstYearSecondSemester2.this);
spinner8.setOnItemSelectedListener(firstYearSecondSemester2.this);
}
Logcat Messages
04-14 02:21:16.260 1772-1772/com.daftnerds.juliusugochukwu.cgpa4 D/dalvikvm﹕ Not late-enabling CheckJNI (already on)
04-14 02:21:16.830 1772-1772/com.daftnerds.juliusugochukwu.cgpa4 I/dalvikvm﹕ Could not find method android.view.ViewGroup.onNestedScrollAccepted, referenced from method android.support.v7.internal.widget.ActionBarOverlayLayout.onNestedScrollAccepted
04-14 02:21:16.830 1772-1772/com.daftnerds.juliusugochukwu.cgpa4 W/dalvikvm﹕ VFY: unable to resolve virtual method 11350: Landroid/view/ViewGroup;.onNestedScrollAccepted (Landroid/view/View;Landroid/view/View;I)V
04-14 02:21:16.830 1772-1772/com.daftnerds.juliusugochukwu.cgpa4 D/dalvikvm﹕ VFY: replacing opcode 0x6f at 0x0000
04-14 02:21:16.830 1772-1772/com.daftnerds.juliusugochukwu.cgpa4 I/dalvikvm﹕ Could not find method android.view.ViewGroup.onStopNestedScroll, referenced from method android.support.v7.internal.widget.ActionBarOverlayLayout.onStopNestedScroll
04-14 02:21:16.830 1772-1772/com.daftnerds.juliusugochukwu.cgpa4 W/dalvikvm﹕ VFY: unable to resolve virtual method 11356: Landroid/view/ViewGroup;.onStopNestedScroll (Landroid/view/View;)V
04-14 02:21:16.830 1772-1772/com.daftnerds.juliusugochukwu.cgpa4 D/dalvikvm﹕ VFY: replacing opcode 0x6f at 0x0000
04-14 02:21:16.830 1772-1772/com.daftnerds.juliusugochukwu.cgpa4 I/dalvikvm﹕ Could not find method android.support.v7.internal.widget.ActionBarOverlayLayout.stopNestedScroll, referenced from method android.support.v7.internal.widget.ActionBarOverlayLayout.setHideOnContentScrollEnabled
04-14 02:21:16.830 1772-1772/com.daftnerds.juliusugochukwu.cgpa4 W/dalvikvm﹕ VFY: unable to resolve virtual method 9044: Landroid/support/v7/internal/widget/ActionBarOverlayLayout;.stopNestedScroll ()V
04-14 02:21:16.830 1772-1772/com.daftnerds.juliusugochukwu.cgpa4 D/dalvikvm﹕ VFY: replacing opcode 0x6e at 0x000e
04-14 02:21:16.910 1772-1772/com.daftnerds.juliusugochukwu.cgpa4 I/dalvikvm﹕ Could not find method android.content.res.TypedArray.getChangingConfigurations, referenced from method android.support.v7.internal.widget.TintTypedArray.getChangingConfigurations
04-14 02:21:16.910 1772-1772/com.daftnerds.juliusugochukwu.cgpa4 W/dalvikvm﹕ VFY: unable to resolve virtual method 368: Landroid/content/res/TypedArray;.getChangingConfigurations ()I
04-14 02:21:16.910 1772-1772/com.daftnerds.juliusugochukwu.cgpa4 D/dalvikvm﹕ VFY: replacing opcode 0x6e at 0x0002
04-14 02:21:16.910 1772-1772/com.daftnerds.juliusugochukwu.cgpa4 I/dalvikvm﹕ Could not find method android.content.res.TypedArray.getType, referenced from method android.support.v7.internal.widget.TintTypedArray.getType
04-14 02:21:16.910 1772-1772/com.daftnerds.juliusugochukwu.cgpa4 W/dalvikvm﹕ VFY: unable to resolve virtual method 390: Landroid/content/res/TypedArray;.getType (I)I
04-14 02:21:16.910 1772-1772/com.daftnerds.juliusugochukwu.cgpa4 D/dalvikvm﹕ VFY: replacing opcode 0x6e at 0x0002
04-14 02:21:17.150 1772-1772/com.daftnerds.juliusugochukwu.cgpa4 D/dalvikvm﹕ GC_FOR_ALLOC freed 140K, 8% free 3075K/3340K, paused 0ms, total 5ms
04-14 02:21:17.150 1772-1772/com.daftnerds.juliusugochukwu.cgpa4 I/dalvikvm-heap﹕ Grow heap (frag case) to 4.195MB for 1127532-byte allocation
04-14 02:21:17.210 1772-1781/com.daftnerds.juliusugochukwu.cgpa4 D/dalvikvm﹕ GC_FOR_ALLOC freed 13K, 7% free 4163K/4444K, paused 3ms, total 4ms
04-14 02:21:18.930 1772-1772/com.daftnerds.juliusugochukwu.cgpa4 I/Choreographer﹕ Skipped 103 frames! The application may be doing too much work on its main thread.
04-14 02:21:18.930 1772-1772/com.daftnerds.juliusugochukwu.cgpa4 D/gralloc_goldfish﹕ Emulator without GPU emulation detected.
04-14 02:27:17.189 1772-1772/com.daftnerds.juliusugochukwu.cgpa4 I/Choreographer﹕ Skipped 60 frames! The application may be doing too much work on its main thread.
04-14 02:27:17.309 1772-1772/com.daftnerds.juliusugochukwu.cgpa4 D/dalvikvm﹕ GC_FOR_ALLOC freed 168K, 7% free 4507K/4796K, paused 2ms, total 2ms
04-14 02:29:34.831 2264-2264/com.daftnerds.juliusugochukwu.cgpa4 D/gralloc_goldfish﹕ Emulator without GPU emulation detected.
Now, once i click the button to start the new activity, this happens
04-14 02:30:40.562 2264-2264/com.daftnerds.juliusugochukwu.cgpa4 D/AndroidRuntime﹕ Shutting down VM
04-14 02:30:40.562 2264-2264/com.daftnerds.juliusugochukwu.cgpa4 W/dalvikvm﹕ threadid=1: thread exiting with uncaught exception (group=0xb0d3cb20)
04-14 02:30:40.602 2264-2264/com.daftnerds.juliusugochukwu.cgpa4 E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: com.daftnerds.juliusugochukwu.cgpa4, PID: 2264
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.daftnerds.juliusugochukwu.cgpa4/com.daftnerds.juliusugochukwu.cgpa4.firstYearSecondSemester2}: java.lang.NullPointerException
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2195)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)
at android.app.ActivityThread.access$800(ActivityThread.java:135)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5017)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.NullPointerException
at com.daftnerds.juliusugochukwu.cgpa4.firstYearSecondSemester2.onCreate(firstYearSecondSemester2.java:76)
at android.app.Activity.performCreate(Activity.java:5231)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2159)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)
at android.app.ActivityThread.access$800(ActivityThread.java:135)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5017)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
at dalvik.system.NativeStart.main(Native Method)
change line with
spinner0.setAdapter(new NothingSelectedSpinnerAdapter(each_grade,R.layout.contact_spinner_row_nothing_selected,this));
and clean your project once.
Omg...found the problem. Truly it was line 76. Please don't be annoyed. I initially had 9 spinners in the main activity and 7 in the new activity. I copied the main activity spinner codes and pasted in the new activity. So when it gets to the 8th spinner (line 76), it gives an error since that spinner is not available in the layout. Thanks for all the help suggested guys...really appreciate them.
Every time I click on the button, the app crashes. I have trouble finding the bug, but I'm sure it has to do something with either the onClickListener, or the onClick function.
Note: I'm using Parse API for some back end stuff. But I highly doubt it has anything to do with any of the Parse stuff.
Here's what my code looks like:
public class SignUpActivity extends Activity {
protected EditText mUserName;
protected EditText mPassword;
protected EditText mEmail;
protected Button mSignUpButton;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);
setContentView(R.layout.activity_sign_up);
mUserName = (EditText) findViewById(R.id.usernameField);
mPassword = (EditText) findViewById(R.id.passwordField);
mEmail = (EditText) findViewById(R.id.emailField);
mSignUpButton = (Button) findViewById(R.id.signupButton);
mSignUpButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
String username = mUserName.getText().toString();
String password = mPassword.getText().toString();
String email = mEmail.getText().toString();
username = username.trim();
password = password.trim();
email = email.trim();
if(username.isEmpty() || password.isEmpty() || email.isEmpty()){
AlertDialog.Builder builder = new AlertDialog.Builder(SignUpActivity.this);
builder.setMessage(R.string.signup_error_message)
.setTitle(R.string.signup_error_title)
.setPositiveButton(android.R.string.ok, null);
AlertDialog dialog = builder.create();
dialog.show();
}
else{
setProgressBarIndeterminateVisibility(true);
ParseUser newUser = new ParseUser();
newUser.setUsername(username);
newUser.setPassword(password);
newUser.setEmail(email);
newUser.signUpInBackground(new SignUpCallback() {
#Override
public void done(ParseException e) {
setProgressBarIndeterminateVisibility(false);
if(e == null){
// success
Intent intent = new Intent(SignUpActivity.this, MainActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK);
startActivity(intent);
}
else{
AlertDialog.Builder builder = new AlertDialog.Builder(SignUpActivity.this);
builder.setMessage(e.getMessage())
.setTitle(R.string.signup_error_title)
.setPositiveButton(android.R.string.ok, null);
AlertDialog dialog = builder.create();
dialog.show();
}
}
});
}
}
});
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.sign_up, menu);
return true;
}
}
Here's my Log Cat:
04-14 14:19:05.881: E/AndroidRuntime(1156): FATAL EXCEPTION: main 04-14 14:19:05.881:
E/AndroidRuntime(1156): Process: com.ebad.ribbit, PID: 1156 04-14 14:19:05.881:
E/AndroidRuntime(1156): java.lang.NullPointerException 04-14 14:19:05.881:
E/AndroidRuntime(1156): at com.ebad.ribbit.SignUpActivity$1.onClick(SignUpActivity.java:40) 04-14 14:19:05.881:
E/AndroidRuntime(1156): at android.view.View.performClick(View.java:4438) 04-14 14:19:05.881:
E/AndroidRuntime(1156): at android.view.View$PerformClick.run(View.java:18422) 04-14 14:19:05.881:
E/AndroidRuntime(1156): at android.os.Handler.handleCallback(Handler.java:733) 04-14 14:19:05.881:
E/AndroidRuntime(1156): at android.os.Handler.dispatchMessage(Handler.java:95) 04-14 14:19:05.881:
E/AndroidRuntime(1156): at android.os.Looper.loop(Looper.java:136) 04-14 14:19:05.881:
E/AndroidRuntime(1156): at android.app.ActivityThread.main(ActivityThread.java:5017) 04-14 14:19:05.881:
E/AndroidRuntime(1156): at java.lang.reflect.Method.invokeNative(Native Method) 04-14 14:19:05.881:
E/AndroidRuntime(1156): at java.lang.reflect.Method.invoke(Method.java:515) 04-14 14:19:05.881:
E/AndroidRuntime(1156): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779) 04-14 14:19:05.881:
E/AndroidRuntime(1156): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595) 04-14 14:19:05.881:
E/AndroidRuntime(1156): at dalvik.system.NativeStart.main(Native Method)
EDIT:
As requested, here is line 40:
String username = mUserName.getText().toString();
EDIT 2:
Here is the log cat after adding Log.i(TAG, mUserName == null ? "mUserName is null" : mUserName.getText() == null ? "mUserName.getText() is null" : "nothing is null"); :
04-14 15:21:47.955: E/AndroidRuntime(1318): FATAL EXCEPTION: main
04-14 15:21:47.955: E/AndroidRuntime(1318): Process: com.ebad.ribbit, PID: 1318
04-14 15:21:47.955: E/AndroidRuntime(1318): java.lang.NullPointerException
04-14 15:21:47.955: E/AndroidRuntime(1318): at com.ebad.ribbit.SignUpActivity$1.onClick(SignUpActivity.java:43)
04-14 15:21:47.955: E/AndroidRuntime(1318): at android.view.View.performClick(View.java:4438)
04-14 15:21:47.955: E/AndroidRuntime(1318): at android.view.View$PerformClick.run(View.java:18422)
04-14 15:21:47.955: E/AndroidRuntime(1318): at android.os.Handler.handleCallback(Handler.java:733)
04-14 15:21:47.955: E/AndroidRuntime(1318): at android.os.Handler.dispatchMessage(Handler.java:95)
04-14 15:21:47.955: E/AndroidRuntime(1318): at android.os.Looper.loop(Looper.java:136)
04-14 15:21:47.955: E/AndroidRuntime(1318): at android.app.ActivityThread.main(ActivityThread.java:5017)
04-14 15:21:47.955: E/AndroidRuntime(1318): at java.lang.reflect.Method.invokeNative(Native Method)
04-14 15:21:47.955: E/AndroidRuntime(1318): at java.lang.reflect.Method.invoke(Method.java:515)
04-14 15:21:47.955: E/AndroidRuntime(1318): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
04-14 15:21:47.955: E/AndroidRuntime(1318): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
04-14 15:21:47.955: E/AndroidRuntime(1318): at dalvik.system.NativeStart.main(Native Method)
EDIT 3:
Upon Request, here is my activity_sign_up.xml:
<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"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
tools:context=".SignUpActivity" >
<EditText
android:id="#+id/userNameField"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:hint="#string/username_hint"
android:ems="10" >
<requestFocus />
</EditText>
<EditText
android:id="#+id/passwordField"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="#+id/userNameField"
android:ems="10"
android:hint="#string/password_hint"
android:inputType="textPassword" />
<EditText
android:id="#+id/emailField"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="#+id/passwordField"
android:ems="10"
android:hint="#string/email_hint"
android:inputType="textEmailAddress" />
<Button
android:id="#+id/signupButton"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignLeft="#+id/emailField"
android:layout_below="#+id/emailField"
android:layout_marginTop="50dp"
android:text="#string/sign_up_button_label" />
</RelativeLayout>
Do this please:
#Override
public void onClick(View v) {
if(mUserName != null && mPassword != null && mEmail != null && mUserName.getText() != null && mPassword.getText() != null && mEmail.getText() != null)
{
Your original code here.
}
}
Update:
Typo
mUserName = (EditText) findViewById(R.id.usernameField); should be userNameField?
<EditText android:id="#+id/userNameField" ...
If mUsername is null, calling getText() on it will cause a NullPointerException. You should check that it's not null before doing this. Try changing to the following:
if(mUserName == null || mPassword == null || mEmail == null){
AlertDialog.Builder builder = new AlertDialog.Builder(SignUpActivity.this);
builder.setMessage(R.string.signup_error_message)
.setTitle(R.string.signup_error_title)
.setPositiveButton(android.R.string.ok, null);
AlertDialog dialog = builder.create();
dialog.show();
}
String username = mUserName.getText().toString();
String password = mPassword.getText().toString();
String email = mEmail.getText().toString();
username = username.trim();
password = password.trim();
email = email.trim();
Try
AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
https://developer.android.com/guide/topics/ui/dialogs.html
Also make sure that SignUpActivity is declared in the app manifest. I guess make sure that all activities are set up in the manifest.
EDIT 1
If line 40 is the issue, then
mUserName is null
or
mUserName.getText() is null. So create a couple checks before hand and also add some debug logs to just verify that they are not null.
Make sure that R.layout.activity_sign_up has usernameField as an id. Also make sure in any other app/res/layout folders (ie layout-v14), that all R.layout.activity_sign_up has the edittext as well.
If this errors occurred in your line 40, that means your are getting null from your EditText.
Try it in every place you are getting a string. At least it will save you from getting null pointer exception from EditText.
String username = String.valueOf(mUserName.getText());
String password = String.valueOf(mPassword.getText());
String email = String.valueOf(mEmail.getText());
I am trying to create an application that sends a file to a server. The application consists of one button that when clicked, will upload a file to a server. Here is the code that I have so far:
public class MainActivity extends Activity implements OnClickListener {
final String TAG = "sendButton";
final String TAG2 = "messageButton";
TextView messageText;
Button uploadButton;
int serverResponseCode = 0;
String result = null;
String url = "http://192.168.1.18";
File file = new File("example.txt");
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// findViewById(R.id.button2).setOnClickListener(this);
//findViewById(R.id.button2).setOnClickListener(this);
setupsendMessage();
//setupmessageButton();
uploadButton = (Button)findViewById(R.id.button1);
messageText = (TextView)findViewById(R.id.button2);
}
private void setupsendMessage() {
// do something when the button is pressed
//
Button sendButton = (Button) findViewById(R.id.button1);
sendButton.setOnClickListener(new View.OnClickListener(){
#Override
public void onClick(View v) {
try {
HttpClient client = new DefaultHttpClient();
HttpPost post = new HttpPost(url);
MultipartEntityBuilder builder = MultipartEntityBuilder.create();
builder.setMode(HttpMultipartMode.BROWSER_COMPATIBLE);
FileBody fileBody = new FileBody(file);
builder.addPart("file", fileBody);
final HttpEntity yourEntity = builder.build();
post.setEntity(yourEntity);
HttpResponse response = client.execute(post);
HttpEntity httpEntity = response.getEntity();
result = EntityUtils.toString(httpEntity);
Log.v("result", result);
}
catch(Exception e)
{
e.printStackTrace();}
Log.i(TAG, "File Sent to Server");
Toast.makeText(MainActivity.this, "File Sent to Server", Toast.LENGTH_LONG).show();
}
});
};
When I run the code the application everything appears fine, but when I press the button nothing happens and I get an error on the trace.
The error is as follows:
04-14 17:20:39.504: W/IInputConnectionWrapper(1693): showStatusIcon on inactive InputConnection
04-14 17:20:46.121: W/System.err(1693): java.net.SocketException: Permission denied
04-14 17:20:46.121: W/System.err(1693): at org.apache.harmony.luni.platform.OSNetworkSystem.socket(Native Method)
04-14 17:20:46.121: W/System.err(1693): at dalvik.system.BlockGuard$WrappedNetworkSystem.socket(BlockGuard.java:335)
04-14 17:20:46.121: W/System.err(1693): at org.apache.harmony.luni.net.PlainSocketImpl.create(PlainSocketImpl.java:216)
04-14 17:20:46.121: W/System.err(1693): at java.net.Socket.checkOpenAndCreate(Socket.java:802)
04-14 17:20:46.121: W/System.err(1693): at java.net.Socket.connect(Socket.java:948)
04-14 17:20:46.121: W/System.err(1693): at org.apache.http.conn.scheme.PlainSocketFactory.connectSocket(PlainSocketFactory.java:119)
04-14 17:20:46.121: W/System.err(1693): at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:143)
04-14 17:20:46.121: W/System.err(1693): at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:164)
04-14 17:20:46.121: W/System.err(1693): at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:119)
04-14 17:20:46.121: W/System.err(1693): at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:360)
04-14 17:20:46.121: W/System.err(1693): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:555)
04-14 17:20:46.121: W/System.err(1693): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:487)
04-14 17:20:46.121: W/System.err(1693): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:465)
04-14 17:20:46.121: W/System.err(1693): at school.project.application.MainActivity$1.onClick(MainActivity.java:117)
04-14 17:20:46.121: W/System.err(1693): at android.view.View.performClick(View.java:2485)
04-14 17:20:46.131: W/System.err(1693): at android.view.View$PerformClick.run(View.java:9081)
04-14 17:20:46.131: W/System.err(1693): at android.os.Handler.handleCallback(Handler.java:587)
04-14 17:20:46.131: W/System.err(1693): at android.os.Handler.dispatchMessage(Handler.java:92)
04-14 17:20:46.131: W/System.err(1693): at android.os.Looper.loop(Looper.java:130)
04-14 17:20:46.131: W/System.err(1693): at android.app.ActivityThread.main(ActivityThread.java:3696)
04-14 17:20:46.131: W/System.err(1693): at java.lang.reflect.Method.invokeNative(Native Method)
04-14 17:20:46.131: W/System.err(1693): at java.lang.reflect.Method.invoke(Method.java:507)
04-14 17:20:46.131: W/System.err(1693): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:866)
04-14 17:20:46.131: W/System.err(1693): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:624)
04-14 17:20:46.131: W/System.err(1693): at dalvik.system.NativeStart.main(Native Method)
04-14 17:20:46.131: I/sendButton(1693): File Sent to Server
You may need to enable Internet access in the project's manifest file:
<uses-permission android:name="android.permission.INTERNET" >
</uses-permission>
You need to have permission to send data via internet, Add the following line to your AndroidManifest.xml
<uses-permission android:name="android.permission.INTERNET" />
So far this app's sole task is to slide as i swipe the screen horizontally. But when i run it on my Android Virtual machine logcat pops up with these errors.:
04-14 16:14:17.822: D/ddm-heap(196): Got feature list request
04-14 16:14:18.193: D/AndroidRuntime(196): Shutting down VM
04-14 16:14:18.193: W/dalvikvm(196): threadid=3: thread exiting with uncaught exception (group=0x4001b188)
04-14 16:14:18.193: E/AndroidRuntime(196): Uncaught handler: thread main exiting due to uncaught exception
04-14 16:14:18.313: E/AndroidRuntime(196): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{stc1.hello.here/stc1.hello.here.Stc1Activity}: java.lang.ClassNotFoundException: stc1.hello.here.Stc1Activity in loader dalvik.system.PathClassLoader#44c067e8
04-14 16:14:18.313: E/AndroidRuntime(196): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2417)
04-14 16:14:18.313: E/AndroidRuntime(196): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2512)
04-14 16:14:18.313: E/AndroidRuntime(196): at android.app.ActivityThread.access$2200(ActivityThread.java:119)
04-14 16:14:18.313: E/AndroidRuntime(196): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1863)
04-14 16:14:18.313: E/AndroidRuntime(196): at android.os.Handler.dispatchMessage(Handler.java:99)
04-14 16:14:18.313: E/AndroidRuntime(196): at android.os.Looper.loop(Looper.java:123)
04-14 16:14:18.313: E/AndroidRuntime(196): at android.app.ActivityThread.main(ActivityThread.java:4363)
04-14 16:14:18.313: E/AndroidRuntime(196): at java.lang.reflect.Method.invokeNative(Native Method)
04-14 16:14:18.313: E/AndroidRuntime(196): at java.lang.reflect.Method.invoke(Method.java:521)
04-14 16:14:18.313: E/AndroidRuntime(196): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860)
04-14 16:14:18.313: E/AndroidRuntime(196): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
04-14 16:14:18.313: E/AndroidRuntime(196): at dalvik.system.NativeStart.main(Native Method)
04-14 16:14:18.313: E/AndroidRuntime(196): Caused by: java.lang.ClassNotFoundException: stc1.hello.here.Stc1Activity in loader dalvik.system.PathClassLoader#44c067e8
04-14 16:14:18.313: E/AndroidRuntime(196): at dalvik.system.PathClassLoader.findClass(PathClassLoader.java:243)
04-14 16:14:18.313: E/AndroidRuntime(196): at java.lang.ClassLoader.loadClass(ClassLoader.java:573)
04-14 16:14:18.313: E/AndroidRuntime(196): at java.lang.ClassLoader.loadClass(ClassLoader.java:532)
04-14 16:14:18.313: E/AndroidRuntime(196): at android.app.Instrumentation.newActivity(Instrumentation.java:1021)
04-14 16:14:18.313: E/AndroidRuntime(196): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2409)
04-14 16:14:18.313: E/AndroidRuntime(196): ... 11 more
04-14 16:14:18.403: I/dalvikvm(196): threadid=7: reacting to signal 3
04-14 16:14:18.413: E/dalvikvm(196): Unable to open stack trace file '/data/anr/traces.txt': Permission denied
04-14 16:14:35.972: D/AndroidRuntime(228): Shutting down VM
04-14 16:14:36.052: W/dalvikvm(228): threadid=3: thread exiting with uncaught exception (group=0x4001b188)
04-14 16:14:36.052: E/AndroidRuntime(228): Uncaught handler: thread main exiting due to uncaught exception
04-14 16:14:36.112: E/AndroidRuntime(228): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{stc1.hello.here/stc1.hello.here.Stc1Activity}: java.lang.ClassNotFoundException: stc1.hello.here.Stc1Activity in loader dalvik.system.PathClassLoader#44e8c7e8
04-14 16:14:36.112: E/AndroidRuntime(228): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2417)
04-14 16:14:36.112: E/AndroidRuntime(228): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2512)
04-14 16:14:36.112: E/AndroidRuntime(228): at android.app.ActivityThread.access$2200(ActivityThread.java:119)
04-14 16:14:36.112: E/AndroidRuntime(228): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1863)
04-14 16:14:36.112: E/AndroidRuntime(228): at android.os.Handler.dispatchMessage(Handler.java:99)
04-14 16:14:36.112: E/AndroidRuntime(228): at android.os.Looper.loop(Looper.java:123)
04-14 16:14:36.112: E/AndroidRuntime(228): at android.app.ActivityThread.main(ActivityThread.java:4363)
04-14 16:14:36.112: E/AndroidRuntime(228): at java.lang.reflect.Method.invokeNative(Native Method)
04-14 16:14:36.112: E/AndroidRuntime(228): at java.lang.reflect.Method.invoke(Method.java:521)
04-14 16:14:36.112: E/AndroidRuntime(228): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860)
04-14 16:14:36.112: E/AndroidRuntime(228): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
04-14 16:14:36.112: E/AndroidRuntime(228): at dalvik.system.NativeStart.main(Native Method)
04-14 16:14:36.112: E/AndroidRuntime(228): Caused by: java.lang.ClassNotFoundException: stc1.hello.here.Stc1Activity in loader dalvik.system.PathClassLoader#44e8c7e8
04-14 16:14:36.112: E/AndroidRuntime(228): at dalvik.system.PathClassLoader.findClass(PathClassLoader.java:243)
04-14 16:14:36.112: E/AndroidRuntime(228): at java.lang.ClassLoader.loadClass(ClassLoader.java:573)
04-14 16:14:36.112: E/AndroidRuntime(228): at java.lang.ClassLoader.loadClass(ClassLoader.java:532)
04-14 16:14:36.112: E/AndroidRuntime(228): at android.app.Instrumentation.newActivity(Instrumentation.java:1021)
04-14 16:14:36.112: E/AndroidRuntime(228): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2409)
04-14 16:14:36.112: E/AndroidRuntime(228): ... 11 more
04-14 16:14:36.174: I/dalvikvm(228): threadid=7: reacting to signal 3
04-14 16:14:36.174: E/dalvikvm(228): Unable to open stack trace file '/data/anr/traces.txt': Permission denied
Here is FragmentActivity.java:
package stc1.hello.here;
import android.app.Activity;
import android.content.Context;
import android.graphics.Color;
import android.os.Bundle;
import android.os.Parcelable;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.view.View;
import android.widget.TextView;
public class FragmentActivity extends Activity {
//We declare how many pages we want here.
private ViewPager awesomePager;
private static int NUM_AWESOME_VIEWS = 20;
private Context cxt;
private AwesomePagerAdapter awesomeAdapter;
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main1);
cxt = this;
awesomeAdapter = new AwesomePagerAdapter();
awesomePager = (ViewPager) findViewById(R.layout.main1);
awesomePager.setAdapter(awesomeAdapter);
}
private class AwesomePagerAdapter extends PagerAdapter{
#Override
public int getCount() {
return NUM_AWESOME_VIEWS;
}
/**
* Create the page for the given position. The adapter is responsible
* for adding the view to the container given here, although it only
* must ensure this is done by the time it returns from
* {#link #finishUpdate()}.
*
* #param container The containing View in which the page will be shown.
* #param position The page position to be instantiated.
* #return Returns an Object representing the new page. This does not
* need to be a View, but can be some other container of the page.
*/
#Override
public Object instantiateItem(View collection, int position) {
TextView tv = new TextView(cxt);
tv.setText("Bonjour PAUG " + position);
tv.setTextColor(Color.WHITE);
tv.setTextSize(30);
((ViewPager) collection).addView(tv,0);
return tv;
}
/**
* Remove a page for the given position. The adapter is responsible
* for removing the view from its container, although it only must ensure
* this is done by the time it returns from {#link #finishUpdate()}.
*
* #param container The containing View from which the page will be removed.
* #param position The page position to be removed.
* #param object The same object that was returned by
* {#link #instantiateItem(View, int)}.
*/
#Override
public void destroyItem(View collection, int position, Object view) {
((ViewPager) collection).removeView((TextView) view);
}
#Override
public boolean isViewFromObject(View view, Object object) {
return view==((TextView)object);
}
/**
* Called when the a change in the shown pages has been completed. At this
* point you must ensure that all of the pages have actually been added or
* removed from the container as appropriate.
* #param container The containing View which is displaying this adapter's
* page views.
*/
#Override
public void finishUpdate(View arg0) {}
#Override
public void restoreState(Parcelable arg0, ClassLoader arg1) {}
#Override
public Parcelable saveState() {
return null;
}
#Override
public void startUpdate(View arg0) {}
}
}
Here is main1.xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
>
<android.support.v4.view.ViewPager
android:id="#+android:id/viewpager"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
/>
</LinearLayout>
Your activity name doesn't match the activity name given in the error:
Caused by: java.lang.ClassNotFoundException: stc1.hello.here.Stc1Activity
You probably need to update the manifest with the correct name.