Update [26-01-2016] : You can follow this to Check/UnCheck Dynamically created CheckBoxes.
Inside onCreate(Bundle bundle) { ... } add this :
Few Notes :
You need to give the Base Layout an ID if you use:
setContentView(R.layout.new_layout);
That is, when you set ContentView using layout xml.
- You may need to create dummy ids in ids.xml in values folder for usability.
- Please keep in mind that you can apply a similar logic for Layout created dynamically instead of using layout xml.
Please keep in mind that you can use similar logic for other Compound Buttons instead of CheckBox.
//Get Base Layout
LinearLayout linearLayout = (LinearLayout) findViewById(R.id.base_layout);
//Create new CheckBox
CheckBox mainCheckBox = new CheckBox(this);
//Create a new ids.xml in values folder and add dummy id there. Than use that dummy id for dynamically created views
mainCheckBox.setId(R.id.main_cb);
//Give a name to it
mainCheckBox.setText(R.string.mainCB);
//Add it to Base layout
linearLayout.addView(mainCheckBox, 0);
//Create other CheckBoxes...
CheckBox[] checkBoxes = new CheckBox[5];
for (int i = 0; i < 5; i++) {
checkBoxes[i] = new CheckBox(this);
checkBoxes[i].setText(String.format(Locale.getDefault(), "Child CheckBox %d", i + 1));
checkBoxes[i].setId(i+101);
linearLayout.addView(checkBoxes[i], i+1);
}
//Creating each checkbox individually:
CheckBox checkBox = new CheckBox(this);
checkBox.setText("Child CheckBox 6");
//Either add an integer value
checkBox.setId(106);
/*
* Or else use a dummy id
* checkBox.setId(R.id.child_cb);
*/
linearLayout.addView(checkBox, 6);
//Set listener to main CheckBox
mainCheckBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
//Create an array of integer type to store all ids of child CBs
int[] ids = new int[] { 101, 102, 103, 104, 105, 106 };
/*
* You can also do
* int[] ids = new int[] { 101, 102, 103, 104, 105, R.id.child_cb };
*/
if(isChecked) {
Toast.makeText(getBaseContext(), "Checked", Toast.LENGTH_SHORT).show();
checkChildCBs(ids);
} else {
Toast.makeText(getBaseContext(), "Unchecked", Toast.LENGTH_SHORT).show();
unCheckChildCBs(ids);
}
}
});
Method to check all CheckBoxes
private void checkChildCBs(int[] ids) {
//Create CheckBox array of same size as that of ids
CheckBox[] checkBoxes = new CheckBox[ids.length];
//Run loop to check them
for (int i = 0; i < ids.length; i++) {
checkBoxes[i] = (CheckBox) findViewById(ids[i]);
checkBoxes[i].setChecked(true);
}
}
Method to unCheck all CheckBoxes
private void unCheckChildCBs(int[] ids) {
//Create CheckBox array of same size as that of ids
CheckBox[] checkBoxes = new CheckBox[ids.length];
//Run loop to unCheck them
for (int i = 0; i < ids.length; i++) {
checkBoxes[i] = (CheckBox) findViewById(ids[i]);
checkBoxes[i].setChecked(false);
}
}
/res/values/ids.xml :
<?xml version="1.0" encoding="utf-8"?>
<resources>
<item type="id" name="main_cb" />
<item type="id" name="child_cb" />
</resources>
Update : You can follow the below code to enable/disable Dynamically created CheckBoxPreferences.
Create a new file named preferences.xml in /res/xml/ directory :
<?xml version="1.0" encoding="utf-8"?>
<PreferenceScreen
xmlns:android="http://schemas.android.com/apk/res/android"
android:key="pref_screen">
</PreferenceScreen>
Than in your PreferenceActivity in onCreate() :
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Add preference xml file from /res/xml/
addPreferencesFromResource(R.xml.preferences);
}
Now we will create CheckBoxPreference dynamically :
// Get PreferenceScreen using the key as stated in preferences.xml
PreferenceScreen prefScreen = (PreferenceScreen) findPreference("pref_screen");
// Now create a CheckBoxPreference array. The size of the array will be the number of required CheckBoxPreferences.
CheckBoxPreference[] cbPrefs = new CheckBoxPreference[5]; // You can set any number you want. This will allow you to create 5 CheckBoxPreferences.
// Run loop to create CheckBoxPreferences and add them to the PreferenceScreen.
for (int i = 0; i < cbPrefs.length; i++) {
cbPrefs[i] = new CheckBoxPreference(getActivity());
cbPrefs[i].setTitle("Dynamically created multiple Pref " + (i+1));
cbPrefs[i].setKey("multiple_dynamic_pref_key_" + (i+1));
prefScreen.addPreference(cbPrefs[i]); // Adds the newly created CheckBoxPreference to the PreferenceScreen
}
/*
IF you want, you can also create new CheckBoxPreference individually like this :
cbPrefs[0] = new CheckBoxPreference(getActivity());
cbPrefs[0].setTitle("My Preference");
cbPrefs[0].setKey("my_pref_key");
prefScreen.addPreference(cbPrefs[0]);
cbPrefs[1] = new CheckBoxPreference(getActivity());
cbPrefs[1].setTitle("Some Name");
cbPrefs[1].setKey("some_pref_key");
prefScreen.addPreference(cbPrefs[1]);
and so on and so forth...
*/
// Now create and add a Preference to the PreferenceScreen
Preference preference = new Preference(getActivity());
preference.setTitle("Preference");
prefScreen.addPreference(preference);
// Now set onPreferenceClickListener to newly created preference.
preference.setOnPreferenceClickListener(new Preference.OnPreferenceClickListener() {
@Override
public boolean onPreferenceClick(Preference preference) {
String[] prefKeys = new String[] {"multiple_dynamic_pref_key_1", "multiple_dynamic_pref_key_2",
"multiple_dynamic_pref_key_3", "multiple_dynamic_pref_key_4",
"multiple_dynamic_pref_key_5"};
changePrefsState(prefKeys, cbPrefs);
return false;
}
});
Finally your onCreate() will look like this :
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Add preference xml file from /res/xml/
addPreferencesFromResource(R.xml.preferences);
// Get PreferenceScreen using the key as stated in preferences.xml
PreferenceScreen prefScreen = (PreferenceScreen) findPreference("pref_screen");
// Now create a CheckBoxPreference array. The size of the array will be the number of required CheckBoxPreferences.
CheckBoxPreference[] cbPrefs = new CheckBoxPreference[5]; // You can set any number you want. This will allow you to create 5 CheckBoxPreferences.
// Run loop to create CheckBoxPreferences and add them to the PreferenceScreen.
for (int i = 0; i < cbPrefs.length; i++) {
cbPrefs[i] = new CheckBoxPreference(getActivity());
cbPrefs[i].setTitle("Dynamically created multiple Pref " + (i+1));
cbPrefs[i].setKey("multiple_dynamic_pref_key_" + (i+1));
prefScreen.addPreference(cbPrefs[i]); // Adds the newly created CheckBoxPreference to the PreferenceScreen
}
// Now create and add a Preference to the PreferenceScreen
Preference preference = new Preference(getActivity());
preference.setTitle("Preference");
PreferenceScreen.addPreference(preference);
// Now set onPreferenceClickListener to newly created preference.
preference.setOnPreferenceClickListener(new Preference.OnPreferenceClickListener() {
@Override
public boolean onPreferenceClick(Preference preference) {
String[] prefKeys = new String[] {"multiple_dynamic_pref_key_1", "multiple_dynamic_pref_key_2",
"multiple_dynamic_pref_key_3", "multiple_dynamic_pref_key_4",
"multiple_dynamic_pref_key_5"};
changePrefsState(prefKeys, cbPrefs);
return false;
}
});
}
// This function is called when you click on preference to check/uncheck CheckBoxPrefs.
private void changePrefsState(String[] prefKeys, CheckBoxPreference[] checkBoxPreferences) {
try {
for (int i = 0; i < prefKeys.length; i++) {
checkBoxPreferences[i] = (CheckBoxPreference) findPreference(prefKeys[i]);
// Check if CheckBozPreference is Checked. If yes than unCheck it else Check it
if (checkBoxPreferences[i].isChecked())
checkBoxPreferences[i].setChecked(false);
else
checkBoxPreferences[i].setChecked(true);
}
} catch(Exception e) {
Toast.makeText(getActivity().getBaseContext(), e.getMessage(), Toast.LENGTH_LONG).show();
}
}
Old :
private void someFunction() {
String[] prefKeys = new String[] {"pref_key_1", "pref_key_2", "pref_key_3", "pref_key_4", "pref_key_5"};
CheckBoxPreference[] cbPrefs = new CheckBoxPreference[prefKeys.length];
changePrefsState(prefKeys, cbPrefs);
}
private void changePrefsState(String[] prefKeys, CheckBoxPreference[] checkBoxPreferences) {
try {
for (int i = 0; i < prefKeys.length; i++) {
checkBoxPreferences[i] = (CheckBoxPreference) findPreference(prefKeys[i]);
// Check if CheckBozPreference is Checked. If yes than unCheck it else Check it
if (checkBoxPreferences[i].isChecked())
checkBoxPreferences[i].setChecked(false);
else
checkBoxPreferences[i].setChecked(true);
}
} catch(Exception e) {
Toast.makeText(getActivity().getBaseContext(), e.getMessage(), Toast.LENGTH_LONG).show();
}
}
The above example works for both Dynamically created preferences and XML defined preferences.
You just need to pass the keys and pref type.
You can make different changePrefsState(arg1, arg2) { ... } for different Preference types.
