xml
···
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="{relativePackage}.{activityClass}" >
<ImageView
android:id="@+id/img"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:src="@drawable/ic_launcher"
android:visibility="invisible"
/>
</RelativeLayout>
···
MainActivity
···
package com.example.ytest10_sensor;
import android.animation.AnimatorSet;
import android.animation.ObjectAnimator;
import android.app.Activity;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.ImageView;
import android.widget.Toast;
public class MainActivity extends Activity implements SensorEventListener {
private SensorManager sensorManager;
private Sensor defaultSensor;
private ImageView img;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
img = (ImageView) findViewById(R.id.img);
//1.获取传感器
sensorManager = (SensorManager) getSystemService(SENSOR_SERVICE);
//2.获取指定传感器
defaultSensor = sensorManager.getDefaultSensor(1);
}
//3.注册sensorManager监听
@Override
protected void onResume() {
// TODO Auto-generated method stub
super.onResume();
sensorManager.registerListener(this,defaultSensor, SensorManager.SENSOR_DELAY_NORMAL);
}
// 当传感器发生改变时走该监听
@Override
public void onSensorChanged(SensorEvent event) {
float x = event.values[0];
float y = event.values[1];
float z = event.values[2];
Toast.makeText(getApplicationContext(), "x:"+x+"y: "+y+"z: "+z, 1).show();
if (Math.abs(x)>14|| Math.abs(y)>14||Math.abs(z)>14) {
ObjectAnimator rotation = ObjectAnimator.ofFloat(img, "rotation", 0,365*5);
ObjectAnimator alpha = ObjectAnimator.ofFloat(img, "alpha", 0,1);
ObjectAnimator scaleX = ObjectAnimator.ofFloat(img, "scaleX", 0,0.8f);
ObjectAnimator scaleY = ObjectAnimator.ofFloat(img, "scaleY", 0,0.8f);
AnimatorSet animatorSet = new AnimatorSet();
img.setVisibility(View.VISIBLE);
animatorSet.playTogether(rotation,alpha,scaleX,scaleY);
animatorSet.setDuration(2000);
animatorSet.start();
}
}
// 当传感器速率发生改变时走这个监听
@Override
public void onAccuracyChanged(Sensor sensor, int accuracy) {
// TODO Auto-generated method stub
}
}
···
