Step by Step _android Development Course [18]_ User Interface Dialog (dialog box)

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Browse Links: http://blog.csdn.net/y18334702058/article/details/44624305

• Topic: Dialog of the User Interface (dialog box)

Dialog (dialog box) instance:

Activity_main.xml Source code:

<?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/btn1"  android:layout_height  =< Span class= "Hljs-value" > "wrap_content"  android:layout_width  = "fill_parent"  android:text  =  "simple Dialog" />     <button  android:id  = "@+id/btn2"  android:layout_height  =< Span class= "Hljs-value" > "wrap_content"  android:layout_width  = "fill_parent"  android:text  =  "List selection box" />     <button  android:id  = "@+id/btn3"  android:layout_height  =< Span class= "Hljs-value" > "wrap_content"  android:layout_width  = "fill_parent"  android:text  =  "First progress bar box" />     <buttonandroid:id="@+id/btn4"android:layout_height="Wrap_ Content "android:layout_width=" Fill_parent "android:text=" Second progress bar box " />                                  </linearlayout>

Mainactivity.java Source code:

Importandroid.app.Activity;ImportAndroid.app.AlertDialog;ImportAndroid.app.ProgressDialog;ImportAndroid.content.DialogInterface;ImportAndroid.os.Bundle;ImportAndroid.view.LayoutInflater;ImportAndroid.view.View;ImportAndroid.view.View.OnClickListener;ImportAndroid.widget.Button;ImportAndroid.widget.EditText;ImportAndroid.widget.Toast; Public  class mainactivity extends Activity implements Onclicklistener {    PrivateButton Btn1,btn2,btn3,btn4,btn5,btn6,btn7,btn8;@Override    protected void onCreate(Bundle savedinstancestate) {Super. OnCreate (Savedinstancestate);        Setcontentview (R.layout.activity_main);    Init (); }Private void Init() {btn1 = (Button) Findviewbyid (R.ID.BTN1); Btn1.setonclicklistener ( This);        BTN2 = (Button) Findviewbyid (R.ID.BTN2); Btn2.setonclicklistener ( This);        Btn3 = (Button) Findviewbyid (R.ID.BTN3); Btn3.setonclicklistener ( This);        Btn4 = (Button) Findviewbyid (R.ID.BTN4); Btn4.setonclicklistener ( This); }@Override     Public void OnClick(View v) {Switch(V.getid ()) { CaseR.id.btn1:alertdialog.builder Builder0 =NewAlertdialog.builder (mainactivity. This);            Builder0.seticon (R.drawable.ic_launcher); Builder0.settitle ("dialog box"); Builder0.setmessage ("Are you ready to go to soy sauce?" ");//Set Positive button eventsBuilder0.setpositivebutton ("Confirm",NewDialoginterface.onclicklistener () { Public void OnClick(Dialoginterface arg0,intARG1) {Toast.maketext (mainactivity. This,"clicked-Confirm", Toast.length_short). Show (); }            });//Set Negative button eventsBuilder0.setnegativebutton ("Cancel",NewDialoginterface.onclicklistener () { Public void OnClick(Dialoginterface arg0,intARG1) {Toast.maketext (mainactivity. This,"Clicked--Cancel", Toast.length_short). Show ();            }            }); Builder0.create (). Show (); Break; CaseR.ID.BTN2:FinalString[] Mitems = {"Item0","Item1","Itme2","Item3","Itme4","ITEM5","Item6"}; Alertdialog.builder Builder1 =NewAlertdialog.builder (mainactivity. This); Builder1.settitle ("List selection box"); Builder1.setitems (Mitems,NewDialoginterface.onclicklistener () { Public void OnClick(Dialoginterface Dialog,intwhich) {Toast.maketext (mainactivity. This, Mitems[which], Toast.length_short). Show ();            }            }); Builder1.create (). Show (); Break; CaseR.id.btn3:progressdialog Mprogressdialog =NewProgressDialog (mainactivity. This);            Mprogressdialog.seticon (R.drawable.ic_launcher); Mprogressdialog.settitle ("First progress bar box");//Set progress bar styleMprogressdialog.setprogressstyle (progressdialog.style_horizontal);//Set the maximum value of the progress barMprogressdialog.setmax ( the); Mprogressdialog.setbutton ("Confirm",NewDialoginterface.onclicklistener () { Public void OnClick(Dialoginterface arg0,intARG1) {Toast.maketext (mainactivity. This,"clicked-Confirm", Toast.length_short). Show ();            }            }); Mprogressdialog.setbutton ("Cancel",NewDialoginterface.onclicklistener () { Public void OnClick(Dialoginterface arg0,intARG1) {Toast.maketext (mainactivity. This,"Clicked--Cancel", Toast.length_short). Show ();            }            }); Mprogressdialog.show (); Break; CaseR.id.btn4:mprogressdialog =NewProgressDialog ( This); Mprogressdialog.settitle ("Second progress bar Box"); Mprogressdialog.setmessage ("Reading, please wait ..." "); Mprogressdialog.setindeterminate (true); Mprogressdialog.setcancelable (true); Mprogressdialog.show (); Break; }    }   }

Operation Result:

Click the first button:

Click the second button:

Click a third button:

Click the fourth button:

Focus on technology, enjoy life! --qq:804212028
Browse Links: http://blog.csdn.net/y18334702058/article/details/44624305

Step by Step _android Development Course [18]_ User Interface Dialog (dialog box)