PreferenceFragment example |
Create /res/xml/preferences.xml to define our preferences:
<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
<PreferenceCategory
android:title="PreferenceCategory A">
<CheckBoxPreference
android:key="PREF_CHECKBOX"
android:title="Title"
android:summary="summary" />
</PreferenceCategory>
</PreferenceScreen>
PrefFragment.java
package com.example.androidpreferencefragment;
import android.os.Bundle;
import android.preference.PreferenceFragment;
public class PrefFragment extends PreferenceFragment {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
addPreferencesFromResource(R.xml.preferences);
}
}
PrefActivity.java
package com.example.androidpreferencefragment;
import android.app.Activity;
import android.app.FragmentManager;
import android.app.FragmentTransaction;
import android.os.Bundle;
public class PrefActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
PrefFragment prefFragment = new PrefFragment();
FragmentManager fragmentManager = getFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
fragmentTransaction.replace(android.R.id.content, prefFragment);
fragmentTransaction.commit();
}
}
MainActivity.java
package com.example.androidpreferencefragment;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.app.Activity;
import android.content.Intent;
import android.content.SharedPreferences;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
public class MainActivity extends Activity {
Button buttonSetPreference;
TextView settingCheckBox;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
buttonSetPreference = (Button)findViewById(R.id.setpreference);
settingCheckBox = (TextView)findViewById(R.id.setting_checkbox);
buttonSetPreference.setOnClickListener(new OnClickListener(){
@Override
public void onClick(View arg0) {
Intent intentSetPref = new Intent(getApplicationContext(), PrefActivity.class);
startActivityForResult(intentSetPref, 0);
}});
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
Boolean prefCheckBox = sharedPreferences.getBoolean("PREF_CHECKBOX", false);
settingCheckBox.setText("CHECKBOX preference = " + prefCheckBox.toString());
}
}
Layout, /res/layout/activity_main.xml
<LinearLayout 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"
android:orientation="vertical"
tools:context=".MainActivity" >
<Button
android:id="@+id/setpreference"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Set Preference" />
<TextView
android:id="@+id/setting_checkbox"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>
Also need to modify AndroidManifest.xml to add activity of PrefActivity.
Next:
- Implement ListPreference in PreferenceFragment
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