Android Vibrator的使用

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Android手机中的震动由Vibrator实现。设置震动事件，需要知道其震动的时间长短、震动的周期等。

在Android Vibrator中，震动的时间一毫秒计算（1/1000秒），所以如果设置的时间值太小，会感觉不出来。

通过调用Vibrator的vibrate(long[] pattern, int repeat)方法实现。

前一个参数为设置震动的效果的数组，第二个参数为 -1表示只震动一次，为0则震动会一直持续。

一个demo：

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package com.shao.vibrator;
 
import android.app.Activity;
import android.os.Bundle;
import android.os.Vibrator;
import android.widget.CompoundButton;
import android.widget.Toast;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.ToggleButton;
 
public class VibratorActivity extends Activity {
    /** Called when the activity is first created. */
 
    private Vibrator vibrator;
    private ToggleButton tog1;
    private ToggleButton tog2;
    private ToggleButton tog3;
 
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        init();
        tog1.setOnCheckedChangeListener(new OnCheckedChangeListener() {
 
            @Override
            public void onCheckedChanged(CompoundButton buttonView,
                    boolean isChecked) {
                // TODO Auto-generated method stub
                if (isChecked) {
                    // 设置震动周期
                    vibrator.vibrate(new long[] { 1000, 10, 100, 1000 }, -1);
                    showToast("OK");
                } else {
                    // 取消震动
                    vibrator.cancel();
                    showToast("CANCEL");
                }
            }
        });
        tog2.setOnCheckedChangeListener(new OnCheckedChangeListener() {
 
            @Override
            public void onCheckedChanged(CompoundButton buttonView,
                    boolean isChecked) {
                // TODO Auto-generated method stub
                if (isChecked) {
                    // 设置震动周期
                    vibrator.vibrate(new long[] { 100, 100, 100, 1000 }, 0);
                    showToast("OK");
                } else {
                    // 取消震动
                    vibrator.cancel();
                    showToast("CANCEL");
                }
            }
        });
        tog3.setOnCheckedChangeListener(new OnCheckedChangeListener() {
 
            @Override
            public void onCheckedChanged(CompoundButton buttonView,
                    boolean isChecked) {
                // TODO Auto-generated method stub
                if (isChecked) {
                    // 设置震动周期
                    vibrator.vibrate(new long[] { 1000, 50, 1000, 50, 1000 },0);
                    showToast("OK");
                } else {
                    // 取消震动
                    vibrator.cancel();
                    showToast("CANCEL");
                }
            }
        });
 
    }
 
    private void init() {
        tog1 = (ToggleButton) findViewById(R.id.tog1);
        tog2 = (ToggleButton) findViewById(R.id.tog2);
        tog3 = (ToggleButton) findViewById(R.id.tog3);
        vibrator = (Vibrator) this.getSystemService(VIBRATOR_SERVICE);
    }
 
    private void showToast(String msg) {
        Toast.makeText(this, msg, 1).show();
    }
}

xml：

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<?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">
    <RelativeLayout
        android:layout_marginTop="20dp"
        android:orientation="horizontal"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content">
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="短震动" />
        <ToggleButton
            android:id="@+id/tog1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:textOn="关闭" android:textOff="打开"
            android:layout_alignParentRight="true" />
    </RelativeLayout>
    <RelativeLayout
        android:layout_marginTop="20dp"
        android:orientation="horizontal"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content">
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="长震动" />
        <ToggleButton
            android:id="@+id/tog2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:textOn="关闭" android:textOff="打开"
            android:layout_alignParentRight="true" />
    </RelativeLayout>
    <RelativeLayout
        android:layout_marginTop="20dp"
        android:orientation="horizontal"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content">
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="节奏震动" />
        <ToggleButton
            android:id="@+id/tog3"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:textOn="关闭"
            android:textOff="打开"
            android:layout_alignParentRight="true" />
    </RelativeLayout>
</LinearLayout>

Vibrator效果图

最后别忘了加上<uses-permission android:name="android.permission.VIBRATE"/>权限。

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