Android实现手机震动效果

package com.example.test11;

import android.app.Activity;
import android.os.Bundle;
import android.os.Vibrator;
import android.text.TextUtils;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class MainActivity extends Activity {

 private EditText et_text;
 private Button btn_submit;
 /**
 * 手机振动器
 */
 private Vibrator vibrator;

 @Override
 protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.activity_main);
 et_text = (EditText) this.findViewById(R.id.et_text);
 btn_submit = (Button) this.findViewById(R.id.btn_submit);

 // 震动效果的系统服务
 vibrator = (Vibrator) getSystemService(VIBRATOR_SERVICE);

 btn_submit.setOnClickListener(new OnClickListener() {
  String text = et_text.getText().toString().trim();

  public void onClick(View v) {
  if (TextUtils.isEmpty(text)) {
   Toast.makeText(MainActivity.this, "内容为空", 0).show();
   Animation shake = AnimationUtils.loadAnimation(
    MainActivity.this, R.anim.shake);
   et_text.startAnimation(shake);

   /*
   * 震动的方式
   */
   // vibrator.vibrate(2000);//振动两秒

   // 下边是可以使震动有规律的震动 -1：表示不重复 0：循环的震动
   long[] pattern = { 200, 2000, 2000, 200, 200, 200 };
   vibrator.vibrate(pattern, -1);
  }
  }
 });
 }
}

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