I have an dialog that appears where the user can costumize how many points they get from each action. The dialog is based on a layout that is not the main_activity. the main activity is the layout that is used in setContentView in the onCreate method.
when I try to get the values I am only getting null, (because the layout where the EditText is is not set as the contentview.... maybe?)
How do I solve this problem so that I get the value of the edittext in the "settings" layout and can use that value in the MainActivity?
private int teamOnePoints=0;
private int teamTwoPoints=0;
private boolean teamOneField=true;
private int burnedPoints = 1;
private int lyrePoints= 3;
private int oneHandLyrePoints = 5;
private int homeRunPoints=5;
private int revPoints=1;
private String teamOneName = "Lag 1";
private String teamTwoName = "Lag 2";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ToggleButton toggle = (ToggleButton)
findViewById(R.id.field_team_toggle); //activates toggle button
toggle.setOnCheckedChangeListener(new
CompoundButton.OnCheckedChangeListener() {
public void onCheckedChanged(CompoundButton buttonView, boolean
isChecked) {
if (isChecked) {
//changes between the teams
teamOneField=false;
} else {
teamOneField=true;
}
}
});
FloatingActionButton fab = findViewById(R.id.points_edit_button);
fab.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
openDialog();
}
});
}
public void openDialog() {
AlertDialog.Builder builder = new
AlertDialog.Builder(MainActivity.this);
LayoutInflater inflater = this.getLayoutInflater();
View v = inflater.inflate(R.layout.settings, null);
builder.setView(v);
builder.setTitle(getResources().getString(R.string.edit_rules));
builder.setPositiveButton(getResources().getString(R.string.ok_button),
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
applySettings();
}
});
builder.setNegativeButton(getResources().getString(R.string.cancel_button),
null);
builder.show();
}
private void applySettings(){
EditText newBurnedPoints = findViewById(R.id.burned_edit);
burnedPoints=Integer.parseInt(newBurnedPoints.getText().toString());
EditText newLyrePoints = findViewById(R.id.lyre_edit);
lyrePoints=Integer.parseInt(newLyrePoints.getText().toString());
EditText newOneHandLyrePoints = findViewById(R.id.one_hand_lyre_edit);
oneHandLyrePoints=Integer.parseInt
(newOneHandLyrePoints.getText().toString());
EditText newHomeRunPoints = findViewById(R.id.home_run_edit);
homeRunPoints=Integer.parseInt(newHomeRunPoints.getText().toString());
EditText newRevPoints = findViewById(R.id.rev_edit);
revPoints=Integer.parseInt(newRevPoints.getText().toString());
EditText newTeamOneName = findViewById(R.id.name_one_edit);
teamOneName= newTeamOneName.getText().toString();
TextView setNewTeamOneName = (TextView)findViewById(R.id.name_one);
setNewTeamOneName.setText(teamOneName);
EditText newTeamTwoName =findViewById(R.id.name_two_edit);
teamTwoName= newTeamTwoName.getText().toString();
TextView setNewTeamTwoName = (TextView)findViewById(R.id.name_two);
setNewTeamTwoName.setText(teamTwoName);
}
SETTINGS LAYOUT:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="24dp"
android:id="@+id/settings_layout"
>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
>
<TextView
android:id="@+id/name_one_settings"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="@string/name_team_one"
style="@style/settings_headings"
/>
<TextView
android:id="@+id/name_two_settings"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="@string/name_team_two"
style="@style/settings_headings"
/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
>
<EditText
android:id="@+id/name_one_edit"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:hint="@string/team_one"
android:maxLength="20"
android:singleLine="true"
/>
<EditText
android:id="@+id/name_two_edit"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:hint="@string/team_two"
android:maxLength="20"
android:singleLine="true"
/>
</LinearLayout>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/burned_points"
android:paddingTop="16dp"
style="@style/settings_headings"/>
<EditText
android:id="@+id/burned_edit"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:hint="1"
android:maxLength="2"
android:inputType="number"
android:singleLine="true"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/lyre_points"
android:paddingTop="16dp"
style="@style/settings_headings"/>
<EditText
android:id="@+id/lyre_edit"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:hint="3"
android:maxLength="2"
android:inputType="number"
android:singleLine="true"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/one_hand_lyre_points"
android:paddingTop="16dp"
style="@style/settings_headings"/>
<EditText
android:id="@+id/one_hand_lyre_edit"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:hint="5"
android:maxLength="2"
android:inputType="number"
android:singleLine="true"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/home_run_points"
android:paddingTop="16dp"
style="@style/settings_headings"/>
<EditText
android:id="@+id/home_run_edit"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:hint="5"
android:maxLength="2"
android:inputType="number"
android:singleLine="true"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/rev_points"
android:paddingTop="16dp"
style="@style/settings_headings"/>
<EditText
android:id="@+id/rev_edit"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:hint="1"
android:maxLength="2"
android:inputType="number"
android:singleLine="true"/>
</LinearLayout>
MAIN LAYOUT
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".MainActivity"
>
<LinearLayout
android:id="@+id/team_names"
android:layout_width="match_parent"
android:layout_height="wrap_content"
>
<TextView
android:id="@+id/name_one"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="@string/team_one"
style="@style/Headings"
/>
<TextView
android:id="@+id/name_two"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="@string/team_two"
style="@style/Headings"
/>
</LinearLayout>
<LinearLayout
android:id="@+id/team_points"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:id="@+id/points_one"
android:layout_width="0dp"
android:layout_height="88dp"
android:layout_weight="1"
android:autoSizeTextType="uniform"
android:text="0"
style="@style/TeamPoints"
/>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
android:paddingTop="16dp"
>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/field_team"/>
<ToggleButton
android:id="@+id/field_team_toggle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textOff="@string/team_one"
android:textOn="@string/team_two"
style="@style/buttons"/>
</LinearLayout>
<TextView
android:id="@+id/points_two"
android:layout_width="0dp"
android:layout_height="88dp"
android:layout_weight="1"
android:autoSizeTextType="uniform"
android:text="0"
style="@style/TeamPoints"
/>
</LinearLayout>
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_horizontal"
android:text="@string/events"
android:paddingTop="16dp"
style="@style/Headings"/>
<TableLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingTop="16dp"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
>
<Button
android:id="@+id/burned_button"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:onClick="burned"
android:text="@string/burned"
style="@style/buttons"/>
<Button
android:id="@+id/lyre_button"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:onClick="lyre"
android:text="@string/lyre"
style="@style/buttons"
/>
<Button
android:id="@+id/one_hand_lyre_button"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:onClick="oneHandLyre"
android:text="@string/oneHandLyre"
style="@style/buttons"
/>
<Button
android:id="@+id/homeRun_button"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:onClick="homeRun"
android:text="@string/homeRun"
style="@style/buttons"
/>
<Button
android:id="@+id/rev_button"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:onClick="rev"
android:text="@string/rev"
style="@style/buttons"
/>
</TableLayout>
<Button
android:id="@+id/reset_button"
android:layout_width="168dp"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal|bottom"
android:layout_marginTop="16dp"
android:onClick="reset"
android:text="@string/reset"
style="@style/buttons"
/>
<android.support.design.widget.FloatingActionButton
android:id="@+id/points_edit_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="end|bottom"
android:src="@android:drawable/ic_menu_edit"
android:layout_margin="16dp" />
</LinearLayout>
I would strongly recommend using SharedPreferences. This way, you can access the data even if you restart your application. If that does not work for you, you can use Intent.
Consider reading this StackOverflow post.
Using SharedPreferences:
SharedPreferences sharedPref = getActivity().getPreferences(Context.MODE_PRIVATE);
SharedPreferences.Editor editor = sharedPref.edit();
editor.putInt(getString(R.string.points), pointsPerActivity);
editor.commit();
SharedPreferences sharedPref = getActivity().getPreferences(Context.MODE_PRIVATE);
int defaultValue = 1;
// or you can store the value somewhere
// getResources().getInteger(R.integer.defaultPointsPerActivity);
int pointsPerActivity = sharedPref.getInt(pointsPerActivity, defaultValue);