Android实现调用震动的方法

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
   package="uni.vibrator"
   android:versionCode="1"
   android:versionName="1.0">
  <uses-sdk android:minSdkVersion="8" />
  <application android:icon="@drawable/icon" android:label="@string/app_name">
    <activity android:name=".VibratorDemoActivity"
         android:label="@string/app_name">
      <intent-filter>
        <action android:name="android.intent.action.MAIN" />
        <category android:name="android.intent.category.LAUNCHER" />
      </intent-filter>
    </activity>
  </application>
   <uses-permission android:name="android.permission.VIBRATE" />
</manifest>

/*
 * @author octobershiner
 * SE.HIT
 * 一个使用android手机震动的demo
 * */
package uni.vibrator;
import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.os.Vibrator;
public class VibratorDemoActivity extends Activity {
  private Vibrator vibrator;
  /** Called when the activity is first created. */
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    /*
     * 想设置震动大小可以通过改变pattern来设定，如果开启时间太短，震动效果可能感觉不到
     * */
    vibrator = (Vibrator)getSystemService(Context.VIBRATOR_SERVICE);
    long [] pattern = {100,400,100,400}; // 停止 开启 停止 开启
    vibrator.vibrate(pattern,2); //重复两次上面的pattern 如果只想震动一次，index设为-1
  }
  public void onStop(){
    super.onStop();
    vibrator.cancel();
  }
}