Android (Java) Learning Note 113:android Write code call vibrator Vibrate function, press button buttons always not vibrate

1. The code I wrote earlier is as follows:

1  Packagecom.himi.vibrate;2 3 Importandroid.app.Activity;4 ImportAndroid.app.Service;5 ImportAndroid.content.res.AssetManager;6 ImportAndroid.graphics.Typeface;7 ImportAndroid.os.Bundle;8 ImportAndroid.os.Vibrator;9 ImportAndroid.view.View;Ten ImportAndroid.view.View.OnClickListener; One ImportAndroid.widget.Button; A  -  Public classMainactivityextendsActivityImplementsOnclicklistener { -     PrivateButton Btnlow; the     PrivateButton Btnnormal; -     PrivateButton btnfast; -      - Vibrator Vibrator; +  - @Override +      Public voidonCreate (Bundle savedinstancestate) { A         Super. OnCreate (savedinstancestate); at Setcontentview (r.layout.activity_main); -          -Vibrator =(Vibrator) Getsystemservice (service.vibrator_service); -          -Btnlow =(Button) Findviewbyid (r.id.btnlow); -Btnnormal =(Button) Findviewbyid (r.id.btnnormal); inBtnfast =(Button) Findviewbyid (r.id.btnfast); - //The following five lines of code is to implement the button above the text display in italics, regardless to          +Assetmanager mgr =getassets (); -Typeface tf = Typeface.createfromasset (Mgr, "Fonts/droidsansfallback.ttf"); the          * Btnlow.settypeface (TF); $ Btnnormal.settypeface (TF);Panax Notoginseng Btnfast.settypeface (TF); -  the } +  A @Override the      Public voidOnClick (View v) { +         if(V.equals (Btnlow)) { -Vibrator.vibrate (New Long[] {1000,30,100,1000},0); $         } $         if(V.equals (btnnormal)) { -              -Vibrator.vibrate (New Long[] {800,40,400,30},0); the         } -         if(V.equals (btnfast)) {WuyiVibrator.vibrate (New Long[] {30,100,20,50},0); the         } -  Wu     } -  About protected voidOnStop () { $         if(NULL!=vibrator) { - Vibrator.cancel (); -         } -         Super. OnStop (); A     } +}

2. It was only later that the original question was so simple that the revised code was as follows:

1  Packagecom.himi.vibrate;2 3 Importandroid.app.Activity;4 ImportAndroid.app.Service;5 ImportAndroid.content.res.AssetManager;6 ImportAndroid.graphics.Typeface;7 ImportAndroid.os.Bundle;8 ImportAndroid.os.Vibrator;9 ImportAndroid.view.View;Ten ImportAndroid.view.View.OnClickListener; One ImportAndroid.widget.Button; A  -  Public classMainactivityextendsActivityImplementsOnclicklistener { -     PrivateButton Btnlow; the     PrivateButton Btnnormal; -     PrivateButton btnfast; -      - Vibrator Vibrator; +  - @Override +      Public voidonCreate (Bundle savedinstancestate) { A         Super. OnCreate (savedinstancestate); at Setcontentview (r.layout.activity_main); -          -Vibrator =(Vibrator) Getsystemservice (service.vibrator_service); -          -Btnlow =(Button) Findviewbyid (r.id.btnlow); -Btnnormal =(Button) Findviewbyid (r.id.btnnormal); inBtnfast =(Button) Findviewbyid (r.id.btnfast); -          toAssetmanager mgr =getassets (); +Typeface tf = Typeface.createfromasset (Mgr, "Fonts/droidsansfallback.ttf"); -          the Btnlow.settypeface (TF); * Btnnormal.settypeface (TF); $ Btnfast.settypeface (TF);Panax Notoginseng          -         //before adding these 3 statements, the vibration service is unresponsive. And then I found out it was a grammar, and I was a jerk.  theBtnfast.setonclicklistener ( This);//monitor current mainactivity +Btnnormal.setonclicklistener ( This);//monitor current mainactivity ABtnlow.setonclicklistener ( This);//monitor current mainacitivity the          +     } -  $ @Override $      Public voidOnClick (View v) { -         if(V.equals (Btnlow)) { -Vibrator.vibrate (New Long[] {1000,30,100,1000},0); the         } -         if(V.equals (btnnormal)) {Wuyi              theVibrator.vibrate (New Long[] {800,40,400,30},0); -         } Wu         if(V.equals (btnfast)) { -Vibrator.vibrate (New Long[] {30,100,20,50},0); About         } $  -     } -  -      A     protected voidOnStop () { +         if(NULL!=vibrator) { the Vibrator.cancel (); -         } $         Super. OnStop (); the     } the}

3. Summary

Here is the mainacitivity implementation of the Onclicklistener interface, so the interface monitoring function is the current mainactivity, so is to listen to the current mainactivity:

The syntax format is as follows:

public class Mainactivity extends Activity implements Onclicklistener {

..................

public void OnCreate (Bundle savedinstancestate) {

............

btn1 = (Button) Findviewbyid (r.id.button1);

Btn1.setonclicklistener (this); listen to the current acitivity, of course, this is mainactivity.

}

Public void OnClick (View v) {

if (V.equals (BTN1)) {

............

}

........................

}

Android (Java) Learning Note 113:android Write code call vibrator Vibrate function, press button buttons always not vibrate