How can I use UpNavigation (Back button) to navigate from one page to its corresponding previous page in android eclipse

Question

I need to navigate from one page to its corresponding previous page(there are more than one previous page for current page in my app) . How can I implement it using Up Navigation / Back button.

Answer 1

You have to use either ActionBar or ToolBar.

Then simply add setDisplayHomeAsUpEnabled(true).

Answer 2

On activities it is by default getting back to previous using back button, but no up button. If you want up, put in Manifest:

android:parentActivityName=".MainActivity"

on Fragments:

FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
transaction.addToBackStack("Tag");
. . .

Answer 3

You can specify parent activities in the manifest

Beginning in Android 4.1 (API level 16), you can declare the logical parent of each activity by specifying the android:parentActivityName attribute in the element

If your app supports Android 4.0 and lower, include the Support Library with your app and add a element inside the . Then specify the parent activity as the value for android.support.PARENT_ACTIVITY, matching the android:parentActivityName attribute.

For example:

 <application ... >
    ...
    <!-- The main/home activity (it has no parent activity) -->
    <activity
        android:name="com.example.myfirstapp.MainActivity" ...>
        ...
    </activity>
    <!-- A child of the main activity -->
    <activity
        android:name="com.example.myfirstapp.DisplayMessageActivity"
        android:label="@string/title_activity_display_message"
        android:parentActivityName="com.example.myfirstapp.MainActivity" >
        <!-- The meta-data element is needed for versions lower than 4.1 -->
        <meta-data
            android:name="android.support.PARENT_ACTIVITY"
            android:value="com.example.myfirstapp.MainActivity" />
    </activity>
</application>

With the parent activity declared this way, you can use the NavUtils APIs to synthesize a new back stack by identifying which activity is the appropriate parent for each activity.

You can refer How to implement the Android ActionBar back button? for implement UpNavigation in your activity

I hope it helps.

Answer 4

Android documentation

Setup parent in Manifest file and then on Activity

@Override
public boolean onOptionsItemSelected(MenuItem item)
{
    switch(item.getItemId())
    {
    case android.R.id.home:
        NavUtils.navigateUpFromSameTask(this);
        return true;
    }
    return super.onOptionsItemSelected(item);
}

or You can call finish() instead of

NavUtils.navigateUpFromSameTask(this)