CODEWITHSUNDEEP
android
kyo
kyo

Reputation: 69

I want to pass data in between two activity using Intent but why it is not working?

I already tried this code in my activity ..

In my First Activity this is my code to pass data :

Intent intent = new Intent(getApplicationContext(), TeacherSideQuestion2.class);
    Bundle bundle = new Bundle();
    bundle.putInt("score", finalScore);
    intent.putExtras(bundle);
    startActivityForResult(intent,0);

and in my Second Activity , here's the code to retrieve my data .

public void onClick() {
    Bundle bundle = getIntent().getExtras();
    // int temp = extras.getInt("score", 0);
    // int temp = i.getExtras().getInt("score", 0);
    if (bundle != null) {
        int temp = bundle.getInt("score", 0);
        if (temp >= 1) {
            Intent intent = new Intent(TeacherSideQuestion2.this,
                    CongratsEnglish.class);
            startActivity(intent);
        } else {
            Intent intent1 = new Intent(TeacherSideQuestion2.this,
                    FailedEnglish.class);
            startActivity(intent1);
        }
    }
}

but when I try to click the onClick event , my application will crash .

can anyone fix this ?

Thank you for your answers .

Here's the LogCat says :

  12-20 03:51:38.973: E/AndroidRuntime(3051): FATAL EXCEPTION: main
12-20 03:51:38.973: E/AndroidRuntime(3051): java.lang.RuntimeException: Unable to instantiate application android.app.Application: java.lang.NullPointerException
12-20 03:51:38.973: E/AndroidRuntime(3051):     at android.app.LoadedApk.makeApplication(LoadedApk.java:504)
12-20 03:51:38.973: E/AndroidRuntime(3051):     at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4364)
12-20 03:51:38.973: E/AndroidRuntime(3051):     at android.app.ActivityThread.access$1300(ActivityThread.java:141)
12-20 03:51:38.973: E/AndroidRuntime(3051):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1294)
12-20 03:51:38.973: E/AndroidRuntime(3051):     at android.os.Handler.dispatchMessage(Handler.java:99)
12-20 03:51:38.973: E/AndroidRuntime(3051):     at android.os.Looper.loop(Looper.java:137)
12-20 03:51:38.973: E/AndroidRuntime(3051):     at android.app.ActivityThread.main(ActivityThread.java:5039)
12-20 03:51:38.973: E/AndroidRuntime(3051):     at java.lang.reflect.Method.invokeNative(Native Method)
12-20 03:51:38.973: E/AndroidRuntime(3051):     at java.lang.reflect.Method.invoke(Method.java:511)
12-20 03:51:38.973: E/AndroidRuntime(3051):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
12-20 03:51:38.973: E/AndroidRuntime(3051):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
12-20 03:51:38.973: E/AndroidRuntime(3051):     at dalvik.system.NativeStart.main(Native Method)
12-20 03:51:38.973: E/AndroidRuntime(3051): Caused by: java.lang.NullPointerException
12-20 03:51:38.973: E/AndroidRuntime(3051):     at android.app.LoadedApk.initializeJavaContextClassLoader(LoadedApk.java:379)
12-20 03:51:38.973: E/AndroidRuntime(3051):     at android.app.LoadedApk.getClassLoader(LoadedApk.java:322)
12-20 03:51:38.973: E/AndroidRuntime(3051):     at android.app.LoadedApk.makeApplication(LoadedApk.java:496)
12-20 03:51:38.973: E/AndroidRuntime(3051):     ... 11 more
12-20 03:51:40.223: E/Trace(3085): error opening trace file: No such file or directory (2)

Upvotes: 0

Views: 155

Answers (4)

user2662842
user2662842

Reputation:

Change startActivityForResult(intent,0); to startActivity(intent); because you don't need to start it for a result just to pass a value to another activity.

I'm not sure if this would be a problem, but you may need to change getApplicationContext() to YourActivityName.this.

Last thing, you don't need to create a bundle to send a value to another activity. You can just do it like this:

Intent intent = new Intent(YourActivityName.this, TeacherSideQuestion2.class);
intent.putExtra("score",finalscore);
startActivity(intent);

Upvotes: 0

Rakeeb Rajbhandari
Rakeeb Rajbhandari

Reputation: 5063

In your First Activity this is my code to pass data :

Intent intent = new Intent(getApplicationContext(), TeacherSideQuestion2.class);
Bundle bundle = new Bundle();
bundle.putInt("score", finalScore);
intent.putExtras(bundle);
startActivity(intent);

In Second Activity:

Declare int i as a global variable.

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    i  = getIntent().getIntExtra("", 0);
}

and on your button.setOnClick {
    if (i >= 1) {
            Intent intent = new Intent(TeacherSideQuestion2.this,
                    CongratsEnglish.class);
            startActivity(intent);
        } else {
            Intent intent1 = new Intent(TeacherSideQuestion2.this,
                    FailedEnglish.class);
            startActivity(intent1);
        }
}

Upvotes: 0

sachin garg
sachin garg

Reputation: 1316

Check your manifest file and see if you have entries for all the activities. Check your min sdk and target sdk in manifest file and android properties.

Upvotes: 0

Cyph3rCod3r
Cyph3rCod3r

Reputation: 2086

Try this :

Intent intent = new Intent(MyActivity.this,YourClass.class);
intent.putInt("score",finalScore);
startActivity(intent);

and in receiving class receive it like this in your onCreate()

int defValue = -999;
Intent intent = getIntent();
int score = intent.getIntExtra("score",defValue);  // defalut value can be anything if score not get recieved

Upvotes: 3

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