ShakeService.java通过intent调用日志消息后未打印日志消息
我试图在打开开关时通过intent调用ShackService.java,该开关检测移动设备的加速度,当移动设备抖动并显示Toast消息时,它将显示Toast消息,但它不工作,那么我的代码中存在什么问题 我已经尝试更改调用intent部分的位置,并在代码的该部分中获取日志消息,该部分工作正常,但调用intent后在ShackService.java中未获取日志消息 MainActivity.javaShakeService.java通过intent调用日志消息后未打印日志消息,java,android,Java,Android,我试图在打开开关时通过intent调用ShackService.java,该开关检测移动设备的加速度,当移动设备抖动并显示Toast消息时,它将显示Toast消息,但它不工作,那么我的代码中存在什么问题 我已经尝试更改调用intent部分的位置,并在代码的该部分中获取日志消息,该部分工作正常,但调用intent后在ShackService.java中未获取日志消息 MainActivity.java package com.example.android.safetyapp; import a
package com.example.android.safetyapp;
import android.content.Context;
import android.content.Intent;
import android.hardware.Sensor;
import android.hardware.SensorManager;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.text.TextUtils;
import android.util.Log;
import android.view.View;
import android.widget.EditText;
import android.widget.Switch;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity {
private Switch OnOffSwitch;
private Boolean SwitchState;
private EditText messagebox;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
messagebox = (EditText) findViewById(R.id.messagebox);
OnOffSwitch = (Switch) findViewById(R.id.OnAndOffSwitch);
//Initialize switch
SwitchState = OnOffSwitch.isChecked(); //Current state of switch
if (SwitchState == false) { //to show initial text
OnOffSwitch.setText("Service is Off");
}
OnOffSwitch.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
final String emergencymessage = messagebox.getText().toString().trim();
if (emergencymessage.isEmpty()) {
OnOffSwitch.setChecked(false);
OnOffSwitch.setText("Service is Off");
Toast.makeText(MainActivity.this, "Message Box cannot leave empty", Toast.LENGTH_LONG).show();
} else {
if (OnOffSwitch.isChecked()) {
//start shake detection
Intent intent = new Intent(MainActivity.this, ShakeService.class);
//Start Service
startService(intent);
OnOffSwitch.setText("Service is On");
Toast.makeText(MainActivity.this, "Service starts", Toast.LENGTH_SHORT).show();
} else {
OnOffSwitch.setText("Service is Off");
Toast.makeText(MainActivity.this, "Service stopped", Toast.LENGTH_SHORT).show();
}
}
}
});
}
}
ShakeService.java
package com.example.android.safetyapp;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.app.Service;
import android.content.Context;
import android.content.Intent;
import android.graphics.Color;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.os.Handler;
import android.os.IBinder;
import android.support.v4.app.NotificationCompat;
import android.util.Log;
import android.widget.Toast;
import java.util.Random;
public class ShakeService extends Service implements SensorEventListener {
private static final String TAG = "myApp";
private SensorManager mSensorManager;
private Sensor mAccelerometer;
private float mAccel; // acceleration apart from gravity
private float mAccelCurrent; // current acceleration including gravity
private float mAccelLast; // last acceleration including gravity
@Override
public IBinder onBind(Intent intent) {
return null;
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
mSensorManager = (SensorManager) getSystemService(Context.SENSOR_SERVICE);
mAccelerometer = mSensorManager
.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);
mSensorManager.registerListener(this, mAccelerometer,
SensorManager.SENSOR_DELAY_UI, new Handler());
return START_STICKY;
}
@Override
public void onAccuracyChanged(Sensor sensor, int accuracy) {
}
@Override
public void onSensorChanged(SensorEvent event) {
float x = event.values[0];
float y = event.values[1];
float z = event.values[2];
mAccelLast = mAccelCurrent;
mAccelCurrent = (float) Math.sqrt((double) (x * x + y * y + z * z));
float delta = mAccelCurrent - mAccelLast;
mAccel = mAccel * 0.9f + delta;
// perform low-cut filter
if (mAccel > -1) {
Log.v(TAG, "did something");
Toast.makeText(ShakeService.this,"Shaking detected",Toast.LENGTH_SHORT).show();
mAccel=0;
}
}
}
我希望在intent调用后打印日志消息“Dod something”,并在调用此intent时打印“Shacking detected”。在清单中注册服务
在清单中注册服务