修改 MainActivity.java 实现逻辑

package cn.twle.android.vibrator;

import android.app.Service;

import android.content.Context;

import android.os.Vibrator;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.view.View;

import android.widget.Button;

import android.widget.Toast;

public class MainActivity extends AppCompatActivity implements View.OnClickListener {

private Button btn_hasVibrator;

private Button btn_short;

private Button btn_long;

private Button btn_rhythm;

private Button btn_cancle;

private Vibrator myVibrator;

private Context mContext;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

//获得系统的Vibrator实例:

myVibrator = (Vibrator) getSystemService(Service.VIBRATOR_SERVICE);

mContext = MainActivity.this;

bindViews();

}

private void bindViews() {

btn_hasVibrator = (Button) findViewById(R.id.btn_hasVibrator);

btn_short = (Button) findViewById(R.id.btn_short);

btn_long = (Button) findViewById(R.id.btn_long);

btn_rhythm = (Button) findViewById(R.id.btn_rhythm);

btn_cancle = (Button) findViewById(R.id.btn_cancle);

btn_hasVibrator.setOnClickListener(this);

btn_short.setOnClickListener(this);

btn_long.setOnClickListener(this);

btn_rhythm.setOnClickListener(this);

btn_cancle.setOnClickListener(this);

}

@Override

public void onClick(View v) {

switch (v.getId()) {

case R.id.btn_hasVibrator:

Toast.makeText(mContext, myVibrator.hasVibrator() ? "当前设备有振动器" : "当前设备无振动器",

Toast.LENGTH_SHORT).show();

break;

case R.id.btn_short:

myVibrator.cancel();

myVibrator.vibrate(new long[]{100, 200, 100, 200}, 0);

Toast.makeText(mContext, "短振动", Toast.LENGTH_SHORT).show();

break;

case R.id.btn_long:

myVibrator.cancel();

myVibrator.vibrate(new long[]{100, 100, 100, 1000}, 0);

Toast.makeText(mContext, "长振动", Toast.LENGTH_SHORT).show();

break;

case R.id.btn_rhythm:

myVibrator.cancel();

myVibrator.vibrate(new long[]{500, 100, 500, 100, 500, 100}, 0);

Toast.makeText(mContext, "节奏振动", Toast.LENGTH_SHORT).show();

break;

case R.id.btn_cancle:

myVibrator.cancel();

Toast.makeText(mContext, "取消振动", Toast.LENGTH_SHORT).show();

}

}

}