当我运行此操作时，我收到此数字格式错误。只有在我注释掉OnLocationChanged方法中的行来测试视图是否会显示并计算出合适的速度时，才会发生这种情况，任何帮助都会非常感激：）
package com.nathan.trackrun;
import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.GooglePlayServicesClient;
import com.google.android.gms.location.LocationClient;
import com.google.android.gms.location.LocationListener;
import com.google.android.gms.location.LocationRequest;
import android.content.pm.ActivityInfo;
import android.location.Location;
import android.location.LocationManager;
import android.os.Bundle;
import android.os.SystemClock;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.Chronometer;
import android.widget.CompoundButton;
import android.widget.TextView;
import android.widget.ToggleButton;
/**
* A simple {@link android.support.v4.app.Fragment} subclass.
*
*/
public class FragmentStats extends Fragment implements
GooglePlayServicesClient.ConnectionCallbacks,
GooglePlayServicesClient.OnConnectionFailedListener, LocationListener {
public FragmentStats() {
// Required empty public constructor
}
LocationManager statsManager;
TextView speedView;
TextView speedUnit;
TextView unitView;
TextView timerView;
TextView distanceView;
TextView distanceUnit;
ToggleButton buttonStart;
Button buttonSave;
Button buttonReset;
ToggleButton buttonSpeedUnit;
String mySpeedString;
String kmhString = "Km/h";
boolean checkSpeedUnit;
private LocationRequest statsLocationRequest;
private LocationClient statsLocationClient;
FragmentMap fMap;
Chronometer stopwatch;
String chronoText;
boolean reset;
public static boolean startStop;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View viewStats = inflater.inflate(R.layout.fragment_stats, container,
false);
// Reference buttons from XML into Java
buttonStart = (ToggleButton) viewStats
.findViewById(R.id.stats_start_button);
buttonSave = (Button) viewStats.findViewById(R.id.save_button);
buttonReset = (Button) viewStats.findViewById(R.id.reset_button);
buttonSpeedUnit = (ToggleButton) viewStats
.findViewById(R.id.speed_unit_button);
speedView = (TextView) viewStats.findViewById(R.id.speed_int);
speedUnit = (TextView) viewStats.findViewById(R.id.speed_unit);
stopwatch = (Chronometer) viewStats.findViewById(R.id.stopwatchView);
distanceUnit = (TextView) viewStats.findViewById(R.id.disctance_unit);
distanceView = (TextView) viewStats.findViewById(R.id.distance_int);
/*
* buttonReset.setOnClickListener(new View.OnClickListener() {
*
* @Override public void onClick(View v) { // TODO Auto-generated method
* stub
*
* pausedMilliseconds = 0;
*
* stopwatch.setBase(SystemClock.elapsedRealtime()); reset = true;
*
* } });
*/
buttonStart
.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView,
boolean isChecked) {
// TODO Auto-generated method stub
reset = false;
if (isChecked) {
int pausedMilliseconds;
pausedMilliseconds = 0;
String chronoText = stopwatch.getText().toString();
String chronoArray[] = chronoText.split(":");
if (chronoArray.length == 2) {
pausedMilliseconds = Integer
.parseInt(chronoArray[0])
* 60
* 1000
+ Integer.parseInt(chronoArray[1])
* 1000;
} else if (chronoArray.length == 3) {
pausedMilliseconds = Integer
.parseInt(chronoArray[0])
* 60
* 60
* 1000
+ Integer.parseInt(chronoArray[1])
* 60
* 1000
+ Integer.parseInt(chronoArray[2])
* 1000;
}
stopwatch.setBase(SystemClock.elapsedRealtime()
- pausedMilliseconds);
stopwatch.start();
}
else {
stopwatch.stop();
}
}
});
buttonSpeedUnit
.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView,
boolean isChecked) {
// TODO Auto-generated method stub
if (isChecked == true) {
checkSpeedUnit = true;
speedUnit.setText("Km/h");
distanceUnit.setText("KM");
} else {
checkSpeedUnit = false;
speedUnit.setText("Mph");
distanceUnit.setText("Miles");
}
}
});
buttonSave.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
}
});
return viewStats;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
statsLocationRequest = LocationRequest.create();
statsLocationRequest
.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
// Set the update interval to 5 seconds
statsLocationRequest.setInterval(5000);
// Set the fastest update interval to 1 second
statsLocationRequest.setFastestInterval(1000);
statsLocationClient = new LocationClient(this.getActivity()
.getApplicationContext(), this, this);
statsLocationClient.connect();
}
@Override
public void onLocationChanged(Location location) {
// TODO Auto-generated method stub
//Below line commented out and replaced with mySpeed dummy value to see if it works
// if (location.hasSpeed()) {
float mySpeed = location.getSpeed();
mySpeed = (float) 5.5;
float distanceUpdater = Integer.parseInt((String) stopwatch.getText())
* mySpeed;
float distance = 0;
String distanceString;
distance = distance + distanceUpdater;
if (checkSpeedUnit == true) {
mySpeed = (float) (mySpeed * 3.6);
distance = (float) (distance / 1000);
distanceString = Float.toString(distance);
mySpeed = 1;
distanceView.setText(distanceString);
mySpeedString = Float.toString(mySpeed);
speedView.setText(mySpeedString);
}
if (checkSpeedUnit == false) {
mySpeed = (float) (mySpeed * 2.237);
distance = (float) (distance * 0.000621371192);
distanceString = Float.toString(distance);
mySpeed = 1;
distanceView.setText(distanceString);
mySpeedString = Float.toString(mySpeed);
speedView.setText(mySpeedString);
}
}
// }
@Override
public void onConnectionFailed(ConnectionResult result) {
// TODO Auto-generated method stub
}
@Override
public void onConnected(Bundle connectionHint) {
// TODO Auto-generated method stub
statsLocationClient.requestLocationUpdates(statsLocationRequest, this);
}
@Override
public void onDisconnected() {
// TODO Auto-generated method stub
}
}
logcat的：
12-01 20:59:19.715: D/ActivityThread(29203): handleBindApplication:com.nathan.trackrun
12-01 20:59:19.715: D/ActivityThread(29203): setTargetHeapUtilization:0.75
12-01 20:59:19.715: D/ActivityThread(29203): setTargetHeapMinFree:2097152
12-01 20:59:19.875: I/u(29203): Making Creator dynamically
12-01 20:59:19.925: I/Google Maps Android API(29203): Google Play services client version: 4452000
12-01 20:59:19.925: I/Google Maps Android API(29203): Google Play services package version: 6587038
12-01 20:59:20.505: W/ActivityThread(29203): ClassLoader.loadClass: The class loader returned by Thread.getContextClassLoader() may fail for processes that host multiple applications. You should explicitly specify a context class loader. For example: Thread.setContextClassLoader(getClass().getClassLoader());
12-01 20:59:20.685: I/Adreno-EGL(29203): <qeglDrvAPI_eglInitialize:410>: EGL 1.4 QUALCOMM build: AU_LINUX_ANDROID_LNX.LA.3.5.2.2_RB1.04.04.04.087.028_msm8974_LNX.LA.3.5.2.2_RB1__release_AU ()
12-01 20:59:20.685: I/Adreno-EGL(29203): OpenGL ES Shader Compiler Version: E031.24.00.15
12-01 20:59:20.685: I/Adreno-EGL(29203): Build Date: 07/31/14 Thu
12-01 20:59:20.685: I/Adreno-EGL(29203): Local Branch:
12-01 20:59:20.685: I/Adreno-EGL(29203): Remote Branch: quic/LNX.LA.3.5.2.2_rb1
12-01 20:59:20.685: I/Adreno-EGL(29203): Local Patches: NONE
12-01 20:59:20.685: I/Adreno-EGL(29203): Reconstruct Branch: AU_LINUX_ANDROID_LNX.LA.3.5.2.2_RB1.04.04.04.087.028 + NOTHING
12-01 20:59:20.705: D/OpenGLRenderer(29203): Enabling debug mode 0
12-01 20:59:20.915: I/Timeline(29203): Timeline: Activity_idle id: android.os.BinderProxy@418b7b90 time:109078101
12-01 20:59:26.185: D/AndroidRuntime(29203): Shutting down VM
12-01 20:59:26.185: W/dalvikvm(29203): threadid=1: thread exiting with uncaught exception (group=0x415ffdb8)
12-01 20:59:26.195: E/AndroidRuntime(29203): FATAL EXCEPTION: main
12-01 20:59:26.195: E/AndroidRuntime(29203): Process: com.nathan.trackrun, PID: 29203
12-01 20:59:26.195: E/AndroidRuntime(29203): java.lang.NumberFormatException: Invalid int: "0:00"
12-01 20:59:26.195: E/AndroidRuntime(29203): at java.lang.Integer.invalidInt(Integer.java:137)
12-01 20:59:26.195: E/AndroidRuntime(29203): at java.lang.Integer.parse(Integer.java:374)
12-01 20:59:26.195: E/AndroidRuntime(29203): at java.lang.Integer.parseInt(Integer.java:365)
12-01 20:59:26.195: E/AndroidRuntime(29203): at java.lang.Integer.parseInt(Integer.java:331)
12-01 20:59:26.195: E/AndroidRuntime(29203): at com.nathan.trackrun.FragmentStats.onLocationChanged(FragmentStats.java:205)
12-01 20:59:26.195: E/AndroidRuntime(29203): at com.google.android.gms.internal.hb$a.handleMessage(Unknown Source)
12-01 20:59:26.195: E/AndroidRuntime(29203): at android.os.Handler.dispatchMessage(Handler.java:102)
12-01 20:59:26.195: E/AndroidRuntime(29203): at android.os.Looper.loop(Looper.java:136)
12-01 20:59:26.195: E/AndroidRuntime(29203): at android.app.ActivityThread.main(ActivityThread.java:5146)
12-01 20:59:26.195: E/AndroidRuntime(29203): at java.lang.reflect.Method.invokeNative(Native Method)
12-01 20:59:26.195: E/AndroidRuntime(29203): at java.lang.reflect.Method.invoke(Method.java:515)
12-01 20:59:26.195: E/AndroidRuntime(29203): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:796)
12-01 20:59:26.195: E/AndroidRuntime(29203): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:612)
12-01 20:59:26.195: E/AndroidRuntime(29203): at dalvik.system.NativeStart.main(Native Method)
答案 0 :(得分：2)
嗯，你的代码在这里
float distanceUpdater = Integer.parseInt((String) stopwatch.getText()) * mySpeed;
将成为具有:字符的字符串数据。您必须解析您正在使用的数据。
String[] parsedMinutesAndSeconds = stopWatch.getText().split(":");
String minutes = parsedMinutesAndSeconds[0];
String seconds = parsedMinutesAndSeconds[1];
然后你可以解析这两个字段的整数并使用它们。根据时钟的工作原理，值得检查是否有2个或3个字段可用数小时或没有可用时间。