问题描述
我持有加速度值这个Accelerometer类，我可以从任何其他类存取权限他们每当我想。通常我会创建新的对象加速度加速度=新的加速度计（本）; 但是当我在 WallpaperService 它doesn'别让我用这个作为参数。
下面是Acclerometer类：
进口android.app.Activity;
进口android.content.Context;
进口android.hardware.Sensor;
进口android.hardware.SensorEvent;
进口android.hardware.SensorEventListener;
进口android.hardware.SensorManager;公共类的Accelero实现SensorEventListener { 私人浮动XAXIS;
私人浮动Y轴;
私人浮动Z轴; 的SensorManager经理;
sensor重力感应;
活动活动; 公众的Accelero（活动活动）{
this.activity =活动;
经理=（的SensorManager）this.activity.getSystemService（Context.SENSOR_SERVICE）;
加速度= manager.getSensorList（Sensor.TYPE_ACCELEROMETER）获得（0）;
manager.registerListener（这一点，加速度计，SensorManager.SENSOR_DELAY_GAME）;
}
公众持股量的getX（）{
返回this.xAxis;
} 公众持股量的getY（）{
返回this.yAxis;
} 公众持股量盖茨（）{
返回this.zAxis;
} 公共无效onAccuracyChanged（传感器传感器，精度INT）{
// TODO自动生成方法存根 } 公共无效onSensorChanged（SensorEvent事件）{
XAXIS = event.values [0];
Y轴= event.values [1];
Z轴= event.values [2];
}}
例如我试图从与SDK附带的样本code访问它时，CubeWallpaper
进口com.example.android.livecubes.R;进口android.graphics.Bitmap;
进口android.graphics.BitmapFactory;
进口android.graphics.Canvas;
进口android.graphics.Color;
进口android.graphics.Paint;
进口android.os.Handler;
进口android.os.SystemClock;
进口android.service.wallpaper.WallpaperService;
进口android.view.MotionEvent;
进口android.view.SurfaceHolder;/ *
*本动画壁纸绘制一个旋转的立方体线框。
* /
公共类CubeWallpaper1扩展WallpaperService { 私人最终处理程序mHandler =新的处理程序（）;
ACC的Accelero; @覆盖
公共无效的onCreate（）{
super.onCreate（）;
ACC =新的Accelero（本）;
} @覆盖
公共无效的onDestroy（）{
super.onDestroy（）;
} ... //跳过，以保持后做空。
}
您有一个活动对象传递来Accelerometer类，而不是一个 WallpaperService对象。
您选择初始化Accelerometer对象：
1）直接它从你的活动类的onCreate（）方法：
加速度加速度=新加速计（本）;
2），或者你可以从你的WallpaperService类做到这一点，但你需要你的活动类的引用。
活动foo的;加速度计加速度=新加速计（富）;
您可以在WallpaperService创建一个方法，将活动对象的引用传递给WallpaperService对象。
公共无效setActivity（活动富）{
this.foo = foo的;
}
我希望这有助于！
更新：
下面是一些code键使第二个选项更容易理解：
公共类YourWallPaperService扩展WallpaperService {
活动foo的;//我猜你创建你的活动code一WallpaperService对象吗？如果是这样，调用该对象的此方法与参数这
公共无效setActivity（活动富）{
this.foo = foo的;
}}
I got this Accelerometer class that holds values of accelerometer and I can acces them from any other class whenever I want. Normally I would create new object Accelerometer accelerometer = new Accelerometer(this); but when I am inside WallpaperService it doesn't let me use this as parameter.
Here is the Acclerometer class:
import android.app.Activity;
import android.content.Context;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
public class Accelero implements SensorEventListener {
private float xAxis;
private float yAxis;
private float zAxis;
SensorManager manager;
Sensor accelerometer;
Activity activity;
public Accelero(Activity activity) {
this.activity = activity;
manager = (SensorManager) this.activity.getSystemService(Context.SENSOR_SERVICE);
accelerometer = manager.getSensorList(Sensor.TYPE_ACCELEROMETER).get(0);
manager.registerListener(this, accelerometer, SensorManager.SENSOR_DELAY_GAME);
}
public float getX(){
return this.xAxis;
}
public float getY(){
return this.yAxis;
}
public float getZ(){
return this.zAxis;
}
public void onAccuracyChanged(Sensor sensor, int accuracy) {
// TODO Auto-generated method stub
}
public void onSensorChanged(SensorEvent event) {
xAxis = event.values[0];
yAxis = event.values[1];
zAxis = event.values[2];
}
}
for example I tried accessing it from the sample code that came with SDK, the CubeWallpaper
import com.example.android.livecubes.R;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.os.Handler;
import android.os.SystemClock;
import android.service.wallpaper.WallpaperService;
import android.view.MotionEvent;
import android.view.SurfaceHolder;
/*
* This animated wallpaper draws a rotating wireframe cube.
*/
public class CubeWallpaper1 extends WallpaperService {
private final Handler mHandler = new Handler();
Accelero acc;
@Override
public void onCreate() {
super.onCreate();
acc = new Accelero(this);
}
@Override
public void onDestroy() {
super.onDestroy();
}
... // skipped to keep post short.
}
You have to pass a Activity object to the Accelerometer class and not a WallpaperService object.
Your options to initialize the Accelerometer object:
1) Do it directly from your activity class in the onCreate() method:
Accelerometer accelerometer = new Accelerometer(this);
2) Or you can do it from your WallpaperService class, yet you'd need a reference to your activity class.
Activity foo;
Accelerometer accelerometer = new Accelerometer(foo);
You can create a method in your WallpaperService to pass a reference of the activity object to the WallpaperService object.
public void setActivity(Activity foo) {
this.foo = foo;
}
I hope this helps!
Update:
Here's some code to make the second option more understandable:
public class YourWallPaperService extends WallpaperService {
Activity foo;
// I'm guessing you create a WallpaperService object in your activity code? If so, call this method on that object with a parameter "this"
public void setActivity(Activity foo) {
this.foo = foo;
}
}
这篇关于从WallpaperService调用加速度计的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！