Double을 곱한 상태에서 인덱스를 꺼내십시오

Question

처음으로 게시.사전에 도움을 주셔서 감사합니다.

나는 두 가지 활동이 있습니다.첫 번째 활동은 InputType이 "numberdecimal"인 EditText 필드를 통해 사용자의 3 개의 숫자를 읽습니다.그것은 이들을 번들로하고, 의도를 통해 두 번째 활동으로 보냅니다.

두 번째 활동은 3 숫자로 읽습니다.그런 다음 일부 상수에 의해 곱해야합니다.그것이 문제가 들어오는 곳입니다. 곱셈의 결과가 너무 커서 (SAME + CHANGHOLD가 아닌 경우, 두 배가 지속적이지 않아야 할 것보다 큽니다.) 그런 다음 indexOutOfBoundsException을 던졌습니다....에

//@SuppressWarnings ("serial)")
public class CreationActivity extends Activity {

@Override
public void onCreate (Bundle savedInstanceState){
    super.onCreate(savedInstanceState);
    setContentView(R.layout.creation);
    TextView txtTitle = (TextView) findViewById(R.id.labelTitle);
    TextView txtArtist = (TextView) findViewById(R.id.labelArtist);
    TextView txtTime = (TextView) findViewById(R.id.labelTitle);

    try {
        Bundle extras = getIntent().getExtras();
        double Hours;
        double Minutes;
        double Seconds;

        if (extras!=null){
            double timerTime[] = extras.getDoubleArray("Time");
            Hours = timerTime[0];
            Minutes = timerTime[1];
            Seconds = timerTime[2];
                            //next line is where the error happens:
            double desired_time = timerTime[0] * 5000;
                            //do some stuff
        }else{
            txtTitle.setText("No data");
        }
    } catch (NumberFormatException e){
    }
}
}   

.

및 logcat :

07-27 21:58:41.736: E/AndroidRuntime(31560): FATAL EXCEPTION: main
07-27 21:58:41.736: E/AndroidRuntime(31560): java.lang.RuntimeException: Unable to start     activity ComponentInfo{com.decker.timer/com.decker.timer.CreationActivity}:    java.lang.IndexOutOfBoundsException: Invalid index 4, size is 4
07-27 21:58:41.736: E/AndroidRuntime(31560):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1956)
07-27 21:58:41.736: E/AndroidRuntime(31560):    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1981)
07-27 21:58:41.736: E/AndroidRuntime(31560):    at android.app.ActivityThread.access$600(ActivityThread.java:123)
07-27 21:58:41.736: E/AndroidRuntime(31560):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1147)
07-27 21:58:41.736: E/AndroidRuntime(31560):    at android.os.Handler.dispatchMessage(Handler.java:99)
07-27 21:58:41.736: E/AndroidRuntime(31560):    at android.os.Looper.loop(Looper.java:137)
07-27 21:58:41.736: E/AndroidRuntime(31560):    at android.app.ActivityThread.main(ActivityThread.java:4424)
07-27 21:58:41.736: E/AndroidRuntime(31560):    at java.lang.reflect.Method.invokeNative(Native Method)
07-27 21:58:41.736: E/AndroidRuntime(31560):    at java.lang.reflect.Method.invoke(Method.java:511)
07-27 21:58:41.736: E/AndroidRuntime(31560):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
07-27 21:58:41.736: E/AndroidRuntime(31560):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
07-27 21:58:41.736: E/AndroidRuntime(31560):    at dalvik.system.NativeStart.main(Native Method)
07-27 21:58:41.736: E/AndroidRuntime(31560): Caused by: java.lang.IndexOutOfBoundsException: Invalid index 4, size is 4
07-27 21:58:41.736: E/AndroidRuntime(31560):    at java.util.ArrayList.throwIndexOutOfBoundsException(ArrayList.java:251)
07-27 21:58:41.736: E/AndroidRuntime(31560):    at java.util.ArrayList.get(ArrayList.java:304)
07-27 21:58:41.736: E/AndroidRuntime(31560):    at com.decker.timer.CreationActivity.onCreate(CreationActivity.java:172)
07-27 21:58:41.736: E/AndroidRuntime(31560):    at android.app.Activity.performCreate(Activity.java:4465)
07-27 21:58:41.736: E/AndroidRuntime(31560):    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1049)
07-27 21:58:41.736: E/AndroidRuntime(31560):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1920)
07-27 21:58:41.736: E/AndroidRuntime(31560):    ... 11 more
07-27 21:58:49.260: D/TimerActivity(31583): onClicked

.

Answer 1

길이 4의 배열에 5 번째 (위치 4 항목) 항목에 액세스하려는 것과 같습니다.