You'll have to make a custom dialog, for example an AlertDialog on which you set a custom content view(with setView()). That custom layout could be a TextView(to present the information)+ a CheckBox (with Do not ask me again). In the OnClickListener set for the dialog's button you get the state of that CheckBox and if the user checked it than you set a flag in the preferences(boolean value of true, for example).
Next time the user usess the app you'll check that boolean value from the preferences and if it is set to true then you will not show the dialog otherwise the user didn't checked the CheckBox so you show him the dialog again.
Edit sample application:
import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.Toast;
public class DoNotShowDialog extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Button action = new Button(this);
action.setText("Start the dialog if the user didn't checked the "
+ "checkbox or if is the first run of the app.");
setContentView(action);
action.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
SharedPreferences prefs = PreferenceManager
.getDefaultSharedPreferences(DoNotShowDialog.this);
boolean dialog_status = prefs
.getBoolean("dialog_status", false);//get the status of the dialog from preferences, if false you ,ust show the dialog
if (!dialog_status) {
View content = getLayoutInflater().inflate(
R.layout.dialog_content, null); // inflate the content of the dialog
final CheckBox userCheck = (CheckBox) content //the checkbox from that view
.findViewById(R.id.check_box1);
//build the dialog
new AlertDialog.Builder(DoNotShowDialog.this)
.setTitle("Warning")
.setView(content)
.setPositiveButton("Ok",
new DialogInterface.OnClickListener() {
public void onClick(
DialogInterface dialog,
int which) {
//find our if the user checked the checkbox and put true in the preferences so we don't show the dialog again
SharedPreferences prefs = PreferenceManager
.getDefaultSharedPreferences(DoNotShowDialog.this);
SharedPreferences.Editor editor = prefs
.edit();
editor.putBoolean("dialog_status",
userCheck.isChecked());
editor.commit();
dialog.dismiss(); //end the dialog.
}
})
.setNegativeButton("Cancel",
new DialogInterface.OnClickListener() {
public void onClick(
DialogInterface dialog,
int which) {
//find our if the user checked the checkbox and put true in the preferences so we don't show the dialog again
SharedPreferences prefs = PreferenceManager
.getDefaultSharedPreferences(DoNotShowDialog.this);
SharedPreferences.Editor editor = prefs
.edit();
editor.putBoolean("dialog_status",
userCheck.isChecked());
editor.commit();
dialog.dismiss();
}
}).show();
} else {
//the preferences value is true so the user did checked the checkbox, so no dialog
Toast.makeText(
DoNotShowDialog.this,
"The user checked the checkbox so we don't show the dialog any more!",
Toast.LENGTH_LONG).show();
}
}
});
}
}
And the layout for the content of the dialog(R.layout.dialog_content):
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Enabling GPS on your phone will decrease battery life!" />
<CheckBox
android:id="@+id/check_box1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Do not ask me again!" />
</LinearLayout>
