Start activity from preference-headers
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26-10-2019 - |
Question
I'm implementing n-layer PreferenceActivities 1st layer PreferenceActivity is loaded from preference-headers.
First header creates fragment of settings which is a PreferenceFragment. Second is a browser activity (2nd is an example from developer.android.com) which opens specified Url. The third one I want to be a next level of PreferenceAtivity that also will be loaded from preference-headers.
First two work fine but 3rd is crashing an app with the exception:
"android.content.ActivityNotFoundException: No Activity found to handle Intent { act=android.intent.action.VIEW dat=com.mycompany.myapp.ui.MyPreferenceActivity} "
MyPreferenceActivity declared in the manifest file. Probably declaration of activity in main_headers.xml is wrong, but I didn't find in references any tip how to do it correct. Tried several variations, they didn't work.
Example I used: http://developer.android.com/reference/android/preference/PreferenceActivity.html
Any thoughts why it doesn't work for me or how the next PreferenceActivity can be called? Basically I just need to start an activity from header, that should be really simple but I'm missing something.
public class MySettings extends PreferenceActivity
{
@Override
public void onBuildHeaders(List<Header> target)
{
loadHeadersFromResource(R.xml.main_headers, target);
}
}
main_headers.xml:
<?xml version="1.0" encoding="utf-8"?>
<preference-headers
xmlns:android="http://schemas.android.com/apk/res/android" >
<header android:title="Custom Settings"
android:fragment="com.mycompany.myapp.ui.SettingsFragment" />
<header android:title="Intent"
android:summary="Launches an Intent.">
<intent android:action="android.intent.action.VIEW"
android:data="http://www.android.com" />
</header>
<header android:title="Another Preference Activity">
<intent android:action="android.intent.action.VIEW"
android:data="com.mycompany.myapp.ui.MyPreferenceActivity" />
</header>
</preference-headers>
Solution
If you want to start an explicit Activity from your third preference then do this:
<intent android:targetPackage="com.mycompany.myapp"
android:targetClass="com.mycompany.myapp.ui.MyPreferenceActivity" />
OTHER TIPS
<header android:title="Intent"
android:summary="Launches an Intent.">
<intent android:targetPackage="com.mycompany.myapp"
android:targetClass="com.mycompany.myapp.ui.MyPreferenceActivity" /></header>
and add the below code in mainfest file
<activity android:name=".activities.MyActivity"
android:label="@string/my_activity_title"
android:theme="@android:style/Theme.Black.NoTitleBar">
<intent-filter>
<action android:name="com.example.myapp.activities.MyActivity" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
if you are creating preferences using java ,then you can achieve the same result by,
PreferenceScreen editPhoneNumbersScreen = getPreferenceManager().createPreferenceScreen(mContext);
editPhoneNumbersScreen.setTitle(getResources().getString(R.string.change_add_emergency_numbers));
editPhoneNumbersScreen.setSummary(getResources().getString(R.string.summary_add_no));
Intent i = new Intent(getApplicationContext(),TargetActivity.class);
i.putExtra("change numbers", true);
editPhoneNumbersScreen.setIntent(i);