CODEWITHSUNDEEP
javaandroid
Michael
Michael

Reputation: 375

Excepetion error occurs onOptionsItemSelected by using SherlockActivity

I just want to create a simple go back(home)button but I got the following errors

e(12674): FATAL EXCEPTION: main
06-11 15:38:59.910: E/AndroidRuntime(12674): java.lang.IllegalArgumentException: Activity DevicesActivity does not have a parent activity name specified. (Did you forget to add the android.support.PARENT_ACTIVITY <meta-data>  element in your manifest?)
06-11 15:38:59.910: E/AndroidRuntime(12674):    at android.support.v4.app.NavUtils.navigateUpFromSameTask(NavUtils.java:74)
06-11 15:38:59.910: E/AndroidRuntime(12674):    at com.example.wip.DevicesActivity.onOptionsItemSelected(DevicesActivity.java:252)
06-11 15:38:59.910: E/AndroidRuntime(12674):    at com.actionbarsherlock.app.SherlockExpandableListActivity.onMenuItemSelected(SherlockExpandableListActivity.java:197)
06-11 15:38:59.910: E/AndroidRuntime(12674):    at com.actionbarsherlock.ActionBarSherlock.callbackOptionsItemSelected(ActionBarSherlock.java:603)

My codes:

getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setHomeButtonEnabled(true);


@Override
public boolean onOptionsItemSelected(MenuItem item) {
    switch (item.getItemId()) {
    // Respond to the action bar's Up/Home button
    case android.R.id.home:
        NavUtils.navigateUpFromSameTask(this);
        return true;
    }
    return super.onOptionsItemSelected(item);
}

Manifest

   <activity
            android:name="com.project.project1.MainActivity"
            android:label="Project1" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

        <activity
            android:name="com.project.project1.SecondActivity"
            android:label="@string/title_activity_second"
            android:parentActivityName="com.project.wip.MainActivity" >
        </activity>

Also Can I do something like this? The code works. anything bad about the following code?

    case android.R.id.home:
    Intent intent = new Intent(secondActivity.this,
                        MainActivity.class);
   startActivity(intent);
    return true;

Upvotes: 1

Views: 772

Answers (1)

BlackHatSamurai
BlackHatSamurai

Reputation: 23483

The problem with your code is the fact that you don't have the following code in your manifest:

<meta-data
            android:name="android.support.PARENT_ACTIVITY"
            android:value="com.example.myfirstapp.MainActivity" />

Chances are you are using a device that isn't ICS, which is why it isn't working.

There is nothing wrong with the code you have at the bottom, but I would put it into a menu like so:

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.main, menu);
            ...
    case android.R.id.home:
    Intent intent = new Intent(secondActivity.this,
                        MainActivity.class);
      startActivity(intent);
      ....

    return true;
}

This will lay the foundation for you to add buttons to go to other area's, as well as home.

Upvotes: 1

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