Tips for Android messages, toast Toast Way

1: Select a control to trigger

2: Trigger event to listen, then bind Toast object for message prompt

1, when creating an Android project, bring your own activity, and we look at the code

1  PackageCom.example.androidday2testbyteacherbydfs;2 3 Importandroid.app.Activity;4 Importandroid.content.Intent;5 ImportAndroid.os.Bundle;6 ImportAndroid.view.View;7 ImportAndroid.view.View.OnClickListener;8 ImportAndroid.widget.Button;9 Ten  One  Public classMainactivityextendsActivity { A  -     PrivateButton butn; -      the @Override -     protected voidonCreate (Bundle savedinstancestate) { -         Super. OnCreate (savedinstancestate); -         //to set the layout + Setcontentview (r.layout.mytest); -         //returns a Button control object.  +BUTN =(Button) Findviewbyid (r.id.mybuttonone); AButn.settext ("You, point me to see ..."); at            -          -         //This is an anonymous inner class that implements a click event to prompt for information.  -         /* - Butn.setonclicklistener (New Onclicklistener () { - //Create a new anonymous inner class in @Override - Public void OnClick (View arg0) { to Toast ss = Toast.maketext (Mainactivity.this, "welcome you to learn Android", Toast.length_long); + ss.show (); -                 } the             });*/ *          $         //the external class is now referenced to implement the click Information (for easy maintenance purposes)Panax Notoginseng          -Butn.setonclicklistener (NewMytestonclickone ( This)); the          +         A     } the}

It already has an implementation,-------anonymous inner class,

Look at the structure:

Now I second is the realization of the way, the external class is convenient maintenance

Create a Mytestonclickone This class implements the interface of the Click event as follows:

1  PackageCom.example.androidday2testbyteacherbydfs;2 3 4 5 Importandroid.app.Activity;6 ImportAndroid.content.Context;7 Importandroid.content.Intent;8 ImportAndroid.view.View;9 ImportAndroid.view.View.OnClickListener;Ten ImportAndroid.widget.EditText; One ImportAndroid.widget.Toast; A /** - * Build a Listener class for button click events -  * @authorAdministrator the  * -  */ -  Public classMytestonclickoneextendsActivityImplementsOnclicklistener { -  +     PrivateContext con; -      Publicmytestonclickone (Context con) { +          This. con=con; A          at     } -      - @Override -      Public voidOnClick (View arg0) { -         //build a toast that corresponds to the alert of the webpage. Maketext (Contextual context object, string string, showing the time of the delay);  -Toast ts = Toast.maketext (Con, "Welcome to your presence!"), Toast.length_long); in ts.show ();//This is open meaning, that is, the meaning of the call.  -        toIntent Intent =NewIntent (con,mytestredirectpage.class); +          - con.startactivity (intent); the          *     } ; $     Panax Notoginseng}

When a run-time effect

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The above is the full content of the toast message prompt.

Tips for Android messages, toast Toast Way