Android中振动器(Vibrator)的使用

系统获取Vibrator也是调用Context的getSystemService方法，接下来就可以调用Vibrator的方法控制手机振动了。Vibrator只有三个方法控制手机振动：

1、vibrate(long milliseconds):控制手机振动的毫秒数。

2、vibrate(long[] pattern,int repeat)：指定手机以pattern模式振动，例如指定pattern为new long[]{400,800,1200,1600}，就是指定在400ms、800ms、1200ms、1600ms这些时间点交替启动、关闭手机振动器，其中repeat指定pattern数组的索引，指定pattern数组中从repeat索引开始的振动进行循环。-1表示只振动一次，非-1表示从 pattern的指定下标开始重复振动。

3、cancel()：关闭手机振动

下面通过一个示例来演示Vibrator的使用：

Activity：

import android.app.Activity;
import android.os.Bundle;
import android.os.Vibrator;
import android.widget.CompoundButton;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.ToggleButton;

public class VibratorTestActivity  extends Activity  implements
        OnCheckedChangeListener {
    private Vibrator vibrator;
    private ToggleButton tog1;
    private ToggleButton tog2;
    private ToggleButton tog3;
    private ToggleButton tog4;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super .onCreate(savedInstanceState);
        setContentView(R.layout.activity_vibrator_test);
        // 获取系统的Vibrator服务
        vibrator = (Vibrator)  this .getSystemService(VIBRATOR_SERVICE);
        tog1 = (ToggleButton) findViewById(R.id.activity_vibrator_test_tb1);
        tog2 = (ToggleButton) findViewById(R.id.activity_vibrator_test_tb2);
        tog3 = (ToggleButton) findViewById(R.id.activity_vibrator_test_tb3);
        tog4 = (ToggleButton) findViewById(R.id.activity_vibrator_test_tb4);
        tog1.setOnCheckedChangeListener( this );
        tog2.setOnCheckedChangeListener( this );
        tog3.setOnCheckedChangeListener( this );
        tog4.setOnCheckedChangeListener( this );

    }

    @Override
    public void onCheckedChanged(CompoundButton buttonView,  boolean isChecked) {
        if (isChecked) {
            if (buttonView == tog1) {
                // 设置震动周期
                vibrator.vibrate( new long [] {  1000 ,  10 ,  100 ,  1000 }, - 1 );
            }  else if (buttonView == tog2) {
                vibrator.vibrate( new long [] {  100 ,  100 ,  100 ,  1000 },  0 );
            }  else if (buttonView == tog3) {
                vibrator.vibrate( new long [] {  1000 ,  50 ,  1000 ,  50 ,  1000 },  0 );
            }  else if (buttonView == tog4) {
                // 设置震动时长
                vibrator.vibrate( 5000 );
            }
        }  else {
            // 关闭震动
            vibrator.cancel();
        }

    }
}

布局XML：

< LinearLayout xmlns:android = "http://schemas.android.com/apk/res/android"
    android:layout_width = "match_parent"
    android:layout_height = "match_parent"
    android:orientation = "vertical" >

    < LinearLayout
        android:layout_width = "match_parent"
        android:layout_height = "wrap_content"
        android:orientation = "horizontal" >

        < TextView
            android:layout_width = "wrap_content"
            android:layout_height = "wrap_content"
            android:text = "单次震动:" />

        < ToggleButton
            android:id = "@+id/activity_vibrator_test_tb1"
            android:layout_width = "wrap_content"
            android:layout_height = "wrap_content"
            android:textOff = "开启"
            android:textOn = "关闭" />
    LinearLayout >

    < LinearLayout
        android:layout_width = "match_parent"
        android:layout_height = "wrap_content"
        android:orientation = "horizontal" >

        < TextView
            android:layout_width = "wrap_content"
            android:layout_height = "wrap_content"
            android:text = "持续震动:" />

        < ToggleButton
            android:id = "@+id/activity_vibrator_test_tb2"
            android:layout_width = "wrap_content"
            android:layout_height = "wrap_content"
            android:textOff = "开启"
            android:textOn = "关闭" />
    LinearLayout >

    < LinearLayout
        android:layout_width = "match_parent"
        android:layout_height = "wrap_content"
        android:orientation = "horizontal" >

        < TextView
            android:layout_width = "wrap_content"
            android:layout_height = "wrap_content"
            android:text = "节奏震动:" />

        < ToggleButton
            android:id = "@+id/activity_vibrator_test_tb3"
            android:layout_width = "wrap_content"
            android:layout_height = "wrap_content"
            android:textOff = "开启"
            android:textOn = "关闭" />
    LinearLayout >

    < LinearLayout
        android:layout_width = "match_parent"
        android:layout_height = "wrap_content"
        android:orientation = "horizontal" >

        < TextView
            android:layout_width = "wrap_content"
            android:layout_height = "wrap_content"
            android:text = "定时长震动:" />

        < ToggleButton
            android:id = "@+id/activity_vibrator_test_tb4"
            android:layout_width = "wrap_content"
            android:layout_height = "wrap_content"
            android:textOff = "开启"
            android:textOn = "关闭" />
    LinearLayout >

LinearLayout >