Step by Step _android Development Course [26]_ User interface Popupwindow (pop-up window)

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

• Topic: User Interface Popupwindow (pop-up window)
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The difference between Popupwindow and Alertdialog:

Alertdialog is non-blocking: Alertdialog pop-up, backstage can also do things.

Popupwindow is blocking: only allow us to operate the Popupwindow before Popupwindow exits, other operations are blocked.

Popupwindow (example):

Define a layout for Popupwindow.
Popupwindow.xml:

<?xml version= "1.0" encoding= "Utf-8"?><linearlayout  xmlns: Android  = "http://schemas.android.com/apk/res/android"  android:layout_width  =" fill_parent " android:layout_height  =" fill_parent " android:background  =" #336699 " android:orientation  = "vertical" ;     <imageview  android:id
      = "@+id/imageview"  android:layout_width  = "wrap_content"  android:layout_height  = "wrap_content"  android:src  =  "@drawable/myimage" />     <linearlayout  android:id  = "@+id/linearlayout1"  android:layout_width< /span>= "wrap_content"  android:layout_height  = "wrap_content"  android:orientation  = "vertical" ;         <button  android:id= "@+id/button1_sure"  android:layout_width  =             "wrap_content"   android:layout_height  = "wrap_content"  android:text  = "OK" />         <button android:id= "@+id/button2_cancel"android:layout_width=" Wrap_content "android:layout_height=" Wrap_content "android:text=" Cancel " /&G t;                                         </linearlayout></linearlayout>

Mainactivity.java:

Importandroid.app.Activity;ImportAndroid.os.Bundle;ImportAndroid.text.InputType;ImportAndroid.view.LayoutInflater;ImportAndroid.view.View;ImportAndroid.view.View.OnClickListener;ImportAndroid.widget.Button;ImportAndroid.widget.ImageView;ImportAndroid.widget.PopupWindow;ImportAndroid.widget.TextView; Public  class mainactivity extends Activity {Button button;@Override    protected void onCreate(Bundle savedinstancestate) {Super. OnCreate (Savedinstancestate);        Setcontentview (R.layout.activity_main);        Button = (button) Findviewbyid (R.id.button1); Button.setonclicklistener (NewOnclicklistener () {@Override             Public void OnClick(View arg0) {//TODO auto-generated method stubInitpopwindow ();    }               }); }Private void Initpopwindow() {//Load the Popupwindow layout fileView Contentview = Layoutinflater.from (Getapplicationcontext ()). Inflate (R.layout.popupwindow,NULL);//Declaration Popupwindow Pop-up windowPopupwindow Popupwindow =NewPopupwindow (NULL, -, -); Popupwindow.setcontentview (Contentview);//Get FocusPopupwindow.setfocusable (true);/** * Popupwindow Three display methods: * Showasdropdown (view view) Pop-up dialog box, located next to the View component Showasdropdown (view anchor, int x, int y) pops up the dialog box, positioned next to the view component, X y for offset showatlocation (View parent, int gravity, int x, int y) Popup dialog, position X y represents the offset, relative to the location of the parent layout * /Popupwindow.showasdropdown (button);        ImageView ImageView = (ImageView) Contentview.findviewbyid (R.id.imageview);        Button button_sure = (button) Contentview.findviewbyid (r.id.button1_sure);    Button Button_cancel = (button) Contentview.findviewbyid (R.id.button2_cancel); }}

Operation Result:

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

Step by Step _android Development Course [26]_ User interface Popupwindow (pop-up window)