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:
package com.guyun.vibratortest; 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>