基于Android重力传感器的编程——摇一摇打电话+旋转锁屏功能的实现

最后的效果图为：



1、main.xml

[java] view
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<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

android:layout_width="match_parent"

android:layout_height="match_parent"

android:orientation="vertical"

android:background="@drawable/b"

>

<Button

android:id="@+id/bt_shake"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:background="@drawable/shake"

android:text="晃动打电话"

android:onClick="goShake"

/>

<Button

android:id="@+id/bt_rotate"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:background="@drawable/rotate"

android:text="旋转锁屏"

android:onClick="goRotate"

/>

</LinearLayout>

2、shake.xml

[java] view
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<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

android:layout_width="match_parent"

android:layout_height="match_parent"

android:orientation="vertical"

android:background="@drawable/a">

<Button android:id="@+id/clear"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="hello_world"

/>

</LinearLayout>

3、rotate.xml

[java] view
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<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

android:layout_width="match_parent"

android:layout_height="match_parent"

android:orientation="vertical"

android:background="@drawable/c">

<TextView

android:id="@+id/tv1"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="hello_world"/>

</LinearLayout>

-------------------以上UI的编写,接下来是逻辑功能的实现

4、MainActivity

[java] view
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package com.njupt.zzt_love_hjd;

import android.os.Bundle;

import android.app.Activity;

import android.content.Intent;

import android.view.Menu;

import android.view.View;

import android.widget.Button;

public class MainActivity extends Activity {

private Button bt_shake;

private Button bt_rotate;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

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

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

}

public void goShake(View v){

Intent i1 = new Intent(getApplicationContext(),ShakeActivity.class);

startActivity(i1);

}

public void goRotate(View v){

Intent i2 = new Intent(getApplicationContext(),RotateActivity.class);

startActivity(i2);

}

@Override

public boolean onCreateOptionsMenu(Menu menu) {

// Inflate the menu; this adds items to the action bar if it is present.

getMenuInflater().inflate(R.menu.main, menu);

return true;

}

}

5、ShakeActivity

[java] view
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package com.njupt.zzt_love_hjd;

import android.app.Activity;

import android.app.Service;

import android.content.Intent;

import android.hardware.Sensor;

import android.hardware.SensorEvent;

import android.hardware.SensorEventListener;

import android.hardware.SensorManager;

import android.os.Bundle;

import android.os.Vibrator;

import android.view.Menu;

import android.view.View;

import android.widget.Button;

import android.widget.Toast;

public class ShakeActivity extends Activity implements SensorEventListener {

private Button clear;

private SensorManager mSensorManager;

private Vibrator vibrator;

private int counter = 1;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.shake);

mSensorManager = (SensorManager) getSystemService(SENSOR_SERVICE);

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

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

clear.setOnClickListener(new Button.OnClickListener() {

@Override

public void onClick(View v) {

clear.setText("现在给button赋值喽....");

}

});

}

@Override

protected void onResume() {

super.onResume();

mSensorManager.registerListener(this, mSensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER), SensorManager.SENSOR_DELAY_GAME);

}

@Override

protected void onStop() {

mSensorManager.unregisterListener(this);

super.onStop();

}

@Override

protected void onPause() {

mSensorManager.unregisterListener(this);

super.onPause();

}

@Override

public void onAccuracyChanged(Sensor sensor, int accuracy) {

}

@Override

public void onSensorChanged(SensorEvent event) {

int sensorType = event.sensor.getType();

float[] values = event.values;

if(sensorType == Sensor.TYPE_ACCELEROMETER){

if(Math.abs(values[0] )> 14 &&Math.abs(values[1] )> 14 &&Math.abs(values[2] )> 14 ){

clear.setText("测试成功"+(counter++));

vibrator.vibrate(500);

// Toast.makeText(this, "您晃动了手机", 1).show();

Intent intent = new Intent();

intent.setAction(Intent.ACTION_DIAL);

// intent.setData(Uri.parse("tel:" + number));

startActivity(intent);

}

}

}

@Override

public boolean onCreateOptionsMenu(Menu menu) {

// Inflate the menu; this adds items to the action bar if it is present.

getMenuInflater().inflate(R.menu.main, menu);

return true;

}

}

6、MyAdmin(用于锁屏中的获取管理员权限)

[java] view
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package com.njupt.zzt_love_hjd;

import android.app.admin.DeviceAdminReceiver;

public class MyAdmin extends DeviceAdminReceiver {

}

7、RotateActivity

[java] view
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package com.njupt.zzt_love_hjd;

import android.app.Activity;

import android.app.Service;

import android.app.admin.DevicePolicyManager;

import android.content.ComponentName;

import android.content.Context;

import android.content.Intent;

import android.hardware.Sensor;

import android.hardware.SensorEvent;

import android.hardware.SensorEventListener;

import android.hardware.SensorManager;

import android.os.Bundle;

import android.os.Vibrator;

import android.view.Menu;

import android.widget.Button;

import android.widget.TextView;

import android.widget.Toast;

public class RotateActivity extends Activity implements SensorEventListener {

private Button clear;

private TextView tv1;

private SensorManager mSensorManager;

private Vibrator vibrator;

private int counter = 1;

private DevicePolicyManager devicePolicyManager;

private boolean isAdminActive;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.rotate);

mSensorManager = (SensorManager) getSystemService(SENSOR_SERVICE);

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

// clear = (Button) findViewById(R.id.clear);

// clear.setOnClickListener(new Button.OnClickListener() {

//

// @Override

// public void onClick(View v) {

// clear.setText("现在给button赋值喽....");

// }

// });

//

tv1 = (TextView) findViewById(R.id.tv1);

devicePolicyManager = (DevicePolicyManager) getSystemService(Context.DEVICE_POLICY_SERVICE);

// 申请权限

ComponentName componentName = new ComponentName(this, MyAdmin.class);

// 判断该组件是否有系统管理员的权限

isAdminActive = devicePolicyManager

.isAdminActive(componentName);

if(!isAdminActive){

Intent intent = new Intent();

//指定动作

intent.setAction(DevicePolicyManager.ACTION_ADD_DEVICE_ADMIN);

//指定给那个组件授权

intent.putExtra(DevicePolicyManager.EXTRA_DEVICE_ADMIN, componentName);

startActivity(intent);

}

}

@Override

protected void onResume() {

super.onResume();

mSensorManager.registerListener(this,

mSensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER),

SensorManager.SENSOR_DELAY_GAME);

}

@Override

protected void onStop() {

mSensorManager.unregisterListener(this);

super.onStop();

}

@Override

protected void onPause() {

mSensorManager.unregisterListener(this);

super.onPause();

}

@Override

public void onAccuracyChanged(Sensor sensor, int accuracy) {

}

@Override

public void onSensorChanged(SensorEvent event) {

int sensorType = event.sensor.getType();

float[] values = event.values;

float x = values[0];

float y = values[1];

if (sensorType == Sensor.TYPE_ACCELEROMETER) {

tv1.setText("现在的x轴是: " + x + " y轴是: " + y);

if (Math.abs(x) > 9.0 || Math.abs(y) > 9.0) {

// Toast.makeText(this, "现在的垂直方向已经超过了90度,将进行锁屏", 1).show();

vibrator.vibrate(500);

System.out.println("...............isAdminActive: "

+ isAdminActive);

if(isAdminActive){

// Toast.makeText(this, "具有权限,将进行锁屏....", 1).show();

devicePolicyManager.lockNow();

devicePolicyManager.resetPassword("123321", 0);

}

}

}

}

@Override

public boolean onCreateOptionsMenu(Menu menu) {

// Inflate the menu; this adds items to the action bar if it is present.

getMenuInflater().inflate(R.menu.main, menu);

return true;

}

}

8、在AndroidManifest.xml文件加上

[html] view
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<uses-permission android:name="android.permission.VIBRATE"/>

<activity android:name="com.njupt.zzt_love_hjd.ShakeActivity"/>

<activity android:name="com.njupt.zzt_love_hjd.RotateActivity"/>

<receiver android:name="com.njupt.zzt_love_hjd.MyAdmin" >

<meta-data android:name="android.app.device_admin"

android:resource="@xml/my_admin"/>

<intent-filter >

<action android:name="android.app.action.DEVICE_ADMIN_ENABLED"/>

</intent-filter>

</receiver>

9、在res中新建xml/my_admin.xml文件

[html] view
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<?xml version="1.0" encoding="utf-8"?>

<device-admin xmlns:android="http://schemas.android.com/apk/res/android">

<!--

limit-password 设置密码的规则

watch-login 监控屏幕解锁尝试次数

reset-password 更改屏幕解锁密码

force-lock 设备自动锁屏

wipe-data 删除全部的数据

-->

<uses-policies>

<limit-password/>

<watch-login />

<reset-password />

<force-lock />

<wipe-data />

</uses-policies>

</device-admin>

这时便能实现摇一摇打电话+旋转锁屏的功能了..........