1
那context=this使我的應用程序停止工作。怎麼了？context =這使我的應用程序停止工作
package com.robot.soccer.control;
import com.robot.soccer.control.R;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.net.Socket;
import java.net.UnknownHostException;
import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.app.AlertDialog;
import android.app.Service;
import android.content.Context;
import android.content.DialogInterface;
import android.os.Vibrator;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.*;
public class Main extends Activity implements OnClickListener, AccelerometerListener {
TextView ipText;
TextView portText;
TextView status;
TextView xStatus;
TextView yStatus;
TextView zStatus;
TextView accText;
ImageButton goBut;
ImageButton kickBut;
public float xVal;
public float yVal;
private static Context CONTEXT;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
accText=(TextView)this.findViewById(R.id.accm);
xStatus=(TextView)this.findViewById(R.id.x);
yStatus=(TextView)this.findViewById(R.id.y);
zStatus=(TextView)this.findViewById(R.id.z);
status=(TextView)this.findViewById(R.id.status);
portText = (TextView)this.findViewById(R.id.portText);
ipText=(TextView)this.findViewById(R.id.ipText);
goBut=(ImageButton)this.findViewById(R.id.goBut);
kickBut=(ImageButton)this.findViewById(R.id.kickBut);
goBut.setOnClickListener(this);
kickBut.setOnClickListener(this);
accText.setText("AccelerometerStatus ");
//CONTEXT=this;
}
這裏是我的logcat：
12-20 01:22:50.271: E/AndroidRuntime(281): FATAL EXCEPTION: main
12-20 01:22:50.271: E/AndroidRuntime(281): java.lang.SecurityException: Requires VIBRATE permission
12-20 01:22:50.271: E/AndroidRuntime(281): at android.os.Parcel.readException(Parcel.java:1247)
12-20 01:22:50.271: E/AndroidRuntime(281): at android.os.Parcel.readException(Parcel.java:1235)
12-20 01:22:50.271: E/AndroidRuntime(281): at android.os.IVibratorService$Stub$Proxy.vibrate(IVibratorService.java:106)
12-20 01:22:50.271: E/AndroidRuntime(281): at android.os.Vibrator.vibrate(Vibrator.java:44)
12-20 01:22:50.271: E/AndroidRuntime(281): at com.robot.soccer.control.Main.vibrate(Main.java:253)
12-20 01:22:50.271: E/AndroidRuntime(281): at com.robot.soccer.control.Main.OnAccelerationChanged(Main.java:239)
12-20 01:22:50.271: E/AndroidRuntime(281): at com.robot.soccer.control.AccelerometerManager$1.onSensorChanged(AccelerometerManager.java:135)
12-20 01:22:50.271: E/AndroidRuntime(281): at android.hardware.SensorManager$ListenerDelegate$1.handleMessage(SensorManager.java:449)
12-20 01:22:50.271: E/AndroidRuntime(281): at android.os.Handler.dispatchMessage(Handler.java:99)
12-20 01:22:50.271: E/AndroidRuntime(281): at android.os.Looper.loop(Looper.java:123)
12-20 01:22:50.271: E/AndroidRuntime(281): at android.app.ActivityThread.main(ActivityThread.java:4627)
12-20 01:22:50.271: E/AndroidRuntime(281): at java.lang.reflect.Method.invokeNative(Native Method)
12-20 01:22:50.271: E/AndroidRuntime(281): at java.lang.reflect.Method.invoke(Method.java:521)
12-20 01:22:50.271: E/AndroidRuntime(281): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
12-20 01:22:50.271: E/AndroidRuntime(281): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
12-20 01:22:50.271: E/AndroidRuntime(281): at dalvik.system.NativeStart.main(Native Method)
分配變量本身可能什麼也不做。你在用'CONTEXT'做什麼？ – dmon
首先從Context變量中移除靜態爲'private Context CONTEXT;'並在應用程序崩潰時也發佈日誌 –
沒有什麼能夠阻止他使用靜態修改器，除非它可能是糟糕的設計選擇。 ：P –