Android Lab Test : Creating a dialog Yes/No (english)
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Android Lab Test : Creating a dialog Yes/No (english) Video of tutorial on : https://www.youtube.com/playlist?list=PLL2Z3bzdO25yHwIV3XdMzKs61At0Ldh6L Visit http://www.AndroidLabTest.com
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Android Lab Test : Creating a dialog Yes/No (english)
- 1. Develop on Android Android Lab Test www.AndroidLabTest.com Youku By Bruno Delb www.weibo.com/brunodelb i.youku.com/brunodelb | www.weibo.com/brunodelb | blog.delb.cn http://i.youku.com/brunoparis Weibo Officialsite Lesson : The dialog, YesNo
- 2. The dialog, YesNo • In this lesson, you will learn to create and display a dialog box. • For this, you will use the Dialog.
- 3. The dialog, YesNo • To create a new Dialog, call the method Builder. AlertDialog.Builder alertDialog = new AlertDialog.Builder(Main.this); • You can specify an icon with he method setIcon(), a title with the method setTitle() and a message with the method setMessage(). alertDialog.setIcon(R.drawable.app); alertDialog.setTitle("Your title"); alertDialog.setMessage("Your message");
- 4. The dialog, YesNo • To add a button « positive » (in the meaning of « Yes »), call themethod setPositiveButton(). Then add a listener OnClickListener and the method onClick(). alertDialog.setPositiveButton("Yes!", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int arg1) { } }); • Repeat the operation with a button « negative » (in the meaning of « No »), with the method setNegativeButton(). alertDialog.setNegativeButton("No!", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int arg1) { } });
- 5. The dialog, YesNo • To manage the action of cancel, call the methode setOnCancelListener. alertDialog.setOnCancelListener(new DialogInterface.OnCancelListener(){ public void onCancel(DialogInterface dialog) { } }); • To display the Dialog, call the method show() : alertDialog.show();
- 6. Layout main.xml <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent"> <Button android:id="@+id/btnShow" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="Show" /> </LinearLayout>
- 7. File Main.java public class Main extends Activity { public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); Button btnShow = (Button)findViewById (R.id.btnShow); btnShow.setOnClickListener(new OnClickListener() { public void onClick(View v) { AlertDialog.Builder alertDialog = new AlertDialog.Builder(Main.this); alertDialog.setIcon(R.drawable.app); alertDialog.setTitle("Your title"); alertDialog.setMessage("Your message");
- 8. File Main.java alertDialog.setPositiveButton("Yes!", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int arg1) { } }); alertDialog.setNegativeButton("No!", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int arg1) { } }); alertDialog.setOnCancelListener(new DialogInterface.OnCancelListener(){ public void onCancel(DialogInterface dialog) { } }); alertDialog.show(); } }); } }
- 9. Test on your mobile Dialog_YesNo
- 10. Follow me on my channel PengYooTV … On my Youku channel http://i.youku.com/brunoparis Who am I ? Bruno Delb (www.delb.cn), Author of the first french book of development of Java mobile application (2002), Consultant, project manager and developer of social & mobile applications, let’s talk about your needs ... And on Weibo : http://www.weibo.com/brunodelb