Android App Probleme

Ich versuche, einen Android-Rechner zu entwickeln, und obwohl Android Studio nicht zeigt, gibt es irgendwelche Fehler in meinem Code, wenn ich die App ausführen und versuchen, auf eine Schaltfläche klicken, funktioniert es nicht mehr. In diesem Fall klickte ich die 8-Taste (mit der ID Button8, das Verfahren onClick1 verknüpft, wenn darauf geklickt)Android App Probleme

Android Studio führt den folgenden Ausnahmecode, wenn ich die 8-Taste drücken:

E/AndroidRuntime: FATAL EXCEPTION: main 
       Process: com.st1.u3141294.sparkscientificcalculator, PID: 2125 
       java.lang.IllegalStateException: Could not find method onClick1 (sparkMain)(View) in a parent or ancestor Context for android:onClick attribute defined on view class android.support.v7.widget.AppCompatButton with id 'button8' 
        at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.resolveMethod(AppCompatViewInflater.java:327) 
        at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:284) 
        at android.view.View.performClick(View.java:5610) 
        at android.view.View$PerformClick.run(View.java:22260) 
        at android.os.Handler.handleCallback(Handler.java:751) 
        at android.os.Handler.dispatchMessage(Handler.java:95) 
        at android.os.Looper.loop(Looper.java:154) 
        at android.app.ActivityThread.main(ActivityThread.java:6077) 
        at java.lang.reflect.Method.invoke(Native Method) 
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:865) 
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755) 
Application terminated.

Hier ist mein Hauptklasse Code:

import android.support.v7.app.AppCompatActivity; 
import android.os.Bundle; 
import android.widget.Button; 
import android.text.Html; 
import android.widget.LinearLayout; 
import android.widget.TextView; 
import android.view.View; 
import android.view.ViewGroup.*; 
import android.app.Activity; 

import java.util.ArrayList; 


public class sparkMain extends AppCompatActivity { 

//TODO: Parentheses; first press enters first parenthesis, second press closes parentheses 
//TODO: Long press Sin (gives cos, tan, sin-1, cos-1, tan-1) and log gives log-1 

protected void onCreateView() { 
    ((TextView)findViewById(R.id.buttonXPow)).setText(Html.fromHtml("X<sup><Small>y</small><s/up>")); 
    ((TextView)findViewById(R.id.button10Pow)).setText(Html.fromHtml("10<sup><Small>y</small><s/up>")); 
} 

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.spark_activity_main); 
    onCreateView(); 

} 

ArrayList<String> arrayList = new ArrayList<String>(); 
String stringInput = ""; 
String stringOutput = ""; 

public void onClick1 (View v) { 
    TextView textViewCalcHistExp1 = (TextView) findViewById(R.id.textViewCalcHistExp1); 
    Button button = (Button) v; 
    stringInput = (String) button.getText().toString(); 

    if (!stringInput.contains("+") && !stringInput.contains("-") && !stringInput.contains("×") && !stringInput.contains("÷")) { 
     stringOutput = stringOutput+stringInput; 
     if (arrayList.size()>0) { 
      arrayList.remove((arrayList.size()-1)); 
     } 
     arrayList.add(stringOutput); 
    } 
    else{ 
     arrayList.add(stringInput); 
     arrayList.add(stringInput); 
     stringOutput=""; 
    } 
    //This version truncates array formatting i.e. entering "2+4*6" would display "2+4*6" 
    textViewCalcHistExp1.setText(textViewCalcHistExp1.getText().toString()+stringInput); 

    //This version leaves array formatting i.e. entering "2+4*6" would display [2,+,4,*,6] ;good for debugging 
    //textViewCalcHistExp1.setText(arrayList.toString()); 
} 

public void onClick (View v) { 

    TextView textViewCalcHistRes1 = (TextView)findViewById(R.id.textViewCalcHistRes1); 
    int calc = 0; 
    int c = arrayList.size(); 

    //i.e. array [2,+,3,*,4,-,3] size(c) = 7, so [2,+,3,*,4,-,3] 
    while (c!=1) { 
     if (c>3) { 
      if (arrayList.get(3).contains("×") || arrayList.get(3).contains("÷")) { 
       if (arrayList.get(3).contains("×")){calc = Integer.parseInt(arrayList.get(2))*Integer.parseInt(arrayList.get(4));} 
       if (arrayList.get(3).contains("÷")){calc = Integer.parseInt(arrayList.get(2))/Integer.parseInt(arrayList.get(4));} 

       //calc = 12 ;array = [2,+,3,*,4,-,3] 
       arrayList.remove(2); //[2,+,*,4,-,3] 
       arrayList.remove(2); //[2,+,4,-,3] 
       arrayList.remove(2); //[2,+,-,3] 
       arrayList.add(2,Integer.toString(calc)); //[2,+,12,-,3] 
       c = arrayList.size(); // size(c) = 5 
      } 
      else { 
       //[2,+,12,-,3] 
       if (arrayList.get(3).contains("+")){calc = Integer.parseInt(arrayList.get(0))+Integer.parseInt(arrayList.get(2));} 
       if (arrayList.get(3).contains("-")){calc = Integer.parseInt(arrayList.get(0))-Integer.parseInt(arrayList.get(2));} 
       if (arrayList.get(3).contains("×")){calc = Integer.parseInt(arrayList.get(0))*Integer.parseInt(arrayList.get(2));} 
       if (arrayList.get(3).contains("÷")){calc = Integer.parseInt(arrayList.get(0))/Integer.parseInt(arrayList.get(2));} 
       //calc = 14 
       arrayList.remove(0); //[+,12,-,3] 
       arrayList.remove(0); //[12,-,3] 
       arrayList.remove(0); //[-,3] 
       arrayList.add(0,Integer.toString(calc)); //[14,-,3] 
       c = arrayList.size(); // size(c) = 3 
      } 
     } 
     // size(c) <= 3 
     else { 
      if (arrayList.get(3).contains("+")){calc = Integer.parseInt(arrayList.get(0))+Integer.parseInt(arrayList.get(2));} 
      if (arrayList.get(3).contains("-")){calc = Integer.parseInt(arrayList.get(0))-Integer.parseInt(arrayList.get(2));} 
      if (arrayList.get(3).contains("×")){calc = Integer.parseInt(arrayList.get(0))*Integer.parseInt(arrayList.get(2));} 
      if (arrayList.get(3).contains("÷")){calc = Integer.parseInt(arrayList.get(0))/Integer.parseInt(arrayList.get(2));} 
      //calc = 11 
      arrayList.remove(0); //[-,3] 
      arrayList.remove(0); //[3] 
      arrayList.remove(0); //[null] 
      arrayList.add(0,Integer.toString(calc)); // [9] 
      c = arrayList.size(); // size(c) = 1 
     } 
    } 
    textViewCalcHistRes1.setText(Integer.toString(calc)); 
    arrayList.clear(); 

} 

public String backspace (String str) { 
    if (stringOutput != null && stringOutput.length() > 0) { 
     stringOutput = stringOutput.substring(0, stringOutput.length()-1); 
    } 
    return str; 
} 

}

Und spark_activity_main.xml:

<?xml version="1.0" encoding="utf-8"?> 
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
xmlns:app2="http://schemas.android.com/apk/res-auto" 
xmlns:tools="http://schemas.android.com/tools" 
android:id="@+id/spark_activity_main" 
android:layout_width="fill_parent" 
android:layout_height="match_parent" 
android:background="#FFFFFF" 
android:paddingBottom="@dimen/activity_vertical_margin" 
android:paddingLeft="@dimen/activity_horizontal_margin" 
android:paddingRight="@dimen/activity_horizontal_margin" 
android:paddingTop="@dimen/activity_vertical_margin" 
tools:context="com.st1.u3141294.sparkscientificcalculator.sparkMain" 
android:weightSum="2" 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" > 


<ScrollView 
    android:layout_width="match_parent" 
    android:layout_alignParentEnd="true" 
    android:scrollbarStyle="insideOverlay" 
    style="@android:style/Widget.DeviceDefault.Light.ScrollView" 
    android:clipToPadding="false" 
    android:fillViewport="false" 

    android:layout_height="260dp"> 

    <LinearLayout 
     android:id="@+id/linearLayoutScroll" 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:orientation="vertical" > 

     <TextView 
      android:layout_width="match_parent" 
      android:id="@+id/textViewCalcHistExp1" 
      android:layout_height="55dp" /> 

     <TextView 
      android:layout_width="match_parent" 
      android:id="@+id/textViewCalcHistRes1" 
      android:layout_height="55dp" /> 

    </LinearLayout> 
</ScrollView> 

<LinearLayout 
    android:orientation="vertical" 
    android:layout_width="match_parent" 
    android:layout_height="wrap_content" 
    android:layout_alignParentStart="true" 
    android:layout_alignParentBottom="true"> 

    <LinearLayout 
     android:orientation="horizontal" 
     android:layout_width="match_parent" 
     android:layout_alignParentBottom="true" 
     android:layout_alignParentStart="true" 
     android:layout_height="40dp" 
     android:id="@+id/firstLinearHorizontal"> 

     <Button 
      android:text="log" 
      android:layout_height="36dp" 
      android:layout_width="0dp" 
      android:id="@+id/buttonLog" 
      android:background="@drawable/operator_style" 
      android:fontFamily="sans-serif" 
      android:textColor="@drawable/operator_style" 
      android:textSize="20sp" 
      android:textAllCaps="false" 
      android:layout_marginRight="5dp" 
      android:layout_weight="1" /> 

     <Button 
      android:text="√" 
      android:layout_height="36dp" 
      android:layout_width="0dp" 
      android:id="@+id/buttonSqrt" 
      android:background="@drawable/operator_style" 
      android:fontFamily="sans-serif" 
      android:textColor="@drawable/operator_style" 
      android:textSize="20sp" 
      android:textAllCaps="false" 
      android:layout_marginRight="5dp" 
      android:layout_weight="1" /> 

     <Button 
      android:text="10^y" 
      android:layout_height="36dp" 
      android:layout_width="0dp" 
      android:id="@+id/button10Pow" 
      android:background="@drawable/operator_style" 
      android:fontFamily="sans-serif" 
      android:textColor="@drawable/operator_style" 
      android:textSize="20sp" 
      android:textAllCaps="false" 
      android:layout_marginRight="5dp" 
      android:layout_weight="1" /> 

     <Button 
      android:text="X^y" 
      android:layout_height="36dp" 
      android:layout_width="0dp" 
      android:layout_weight="1" 
      android:id="@+id/buttonXPow" 
      android:background="@drawable/operator_style" 
      android:fontFamily="sans-serif" 
      android:textColor="@drawable/operator_style" 
      android:textSize="20sp" 
      android:textAllCaps="false" 
      android:layout_marginRight="5dp" /> 

     <ImageButton 
      android:layout_width="0dp" 
      android:layout_height="36dp" 
      android:id="@+id/buttonDel" 
      android:layout_weight="1" 
      android:background="@drawable/operator_style" 
      app2:srcCompat="@mipmap/ic_input_delete_black_trans" /> 

    </LinearLayout> 

    <LinearLayout 
     android:orientation="horizontal" 
     android:layout_width="match_parent" 
     android:layout_height="40dp"> 

     <Button 
      android:text="sin" 
      android:layout_height="36dp" 
      android:id="@+id/buttonSin" 
      android:background="@drawable/operator_style" 
      android:fontFamily="sans-serif" 
      android:textColor="@drawable/operator_style" 
      android:textSize="20sp" 
      android:textAllCaps="false" 
      android:layout_marginRight="5dp" 
      android:layout_width="0dp" 
      android:layout_weight="1" /> 

     <Button 
      android:text="π" 
      android:layout_height="36dp" 
      android:id="@+id/buttonPi" 
      android:background="@drawable/operator_style" 
      android:fontFamily="sans-serif" 
      android:textColor="@drawable/operator_style" 
      android:textSize="20sp" 
      android:textAllCaps="false" 
      android:layout_marginRight="5dp" 
      android:layout_width="0dp" 
      android:layout_weight="1" /> 

     <Button 
      android:text="()" 
      android:layout_height="36dp" 
      android:id="@+id/buttonPar" 
      android:background="@drawable/operator_style" 
      android:fontFamily="sans-serif" 
      android:textColor="@drawable/operator_style" 
      android:textSize="20sp" 
      android:textAllCaps="false" 
      android:layout_marginRight="5dp" 
      android:layout_width="0dp" 
      android:layout_weight="1" /> 

     <Button 
      android:text="+/-" 
      android:layout_height="36dp" 
      android:id="@+id/buttonSign" 
      android:background="@drawable/operator_style" 
      android:fontFamily="sans-serif" 
      android:textColor="@drawable/operator_style" 
      android:textSize="20sp" 
      android:textAllCaps="false" 
      android:layout_marginRight="5dp" 
      android:layout_width="0dp" 
      android:layout_weight="1" /> 

     <Button 
      android:text="÷" 
      android:layout_height="36dp" 
      android:id="@+id/buttonDiv" 
      android:background="@drawable/operator_style" 
      android:fontFamily="sans-serif" 
      android:textColor="@drawable/operator_style" 
      android:textSize="20sp" 
      android:textAllCaps="false" 
      android:layout_width="0dp" 
      android:layout_weight="1" 
      android:onClick="onClick1 (sparkMain)" /> 
    </LinearLayout> 

    <LinearLayout 
     android:orientation="horizontal" 
     android:layout_width="match_parent" 
     android:layout_height="40dp"> 

     <Button 
      android:text="7" 
      android:layout_height="36dp" 
      android:id="@+id/button7" 
      android:background="@drawable/button_style" 
      android:fontFamily="sans-serif" 
      android:textColor="@drawable/button_style" 
      android:textSize="20sp" 
      android:textAllCaps="false" 
      android:layout_marginRight="5dp" 
      android:layout_width="0dp" 
      android:layout_weight="1" 
      android:onClick="onClick1 (sparkMain)" /> 

     <Button 
      android:text="8" 
      android:layout_height="36dp" 
      android:id="@+id/button8" 
      android:background="@drawable/button_style" 
      android:fontFamily="sans-serif" 
      android:textColor="@drawable/button_style" 
      android:textSize="20sp" 
      android:textAllCaps="false" 
      android:layout_marginRight="5dp" 
      android:layout_width="0dp" 
      android:layout_weight="1" 
      android:onClick="onClick1 (sparkMain)" /> 

     <Button 
      android:text="9" 
      android:layout_height="36dp" 
      android:id="@+id/button9" 
      android:background="@drawable/button_style" 
      android:fontFamily="sans-serif" 
      android:textColor="@drawable/button_style" 
      android:textSize="20sp" 
      android:textAllCaps="false" 
      android:layout_marginRight="5dp" 
      android:layout_width="0dp" 
      android:layout_weight="1" 
      android:onClick="onClick1 (sparkMain)" /> 

     <Button 
      android:text="×" 
      android:layout_height="36dp" 
      android:id="@+id/buttonMult" 
      android:background="@drawable/operator_style" 
      android:fontFamily="sans-serif" 
      android:textColor="@drawable/operator_style" 
      android:textSize="20sp" 
      android:textAllCaps="false" 
      android:layout_width="0dp" 
      android:layout_weight="0.735" 
      android:onClick="onClick1 (sparkMain)" /> 
    </LinearLayout> 

    <LinearLayout 
     android:orientation="horizontal" 
     android:layout_width="match_parent" 
     android:layout_height="40dp"> 

     <Button 
      android:text="4" 
      android:layout_height="36dp" 
      android:id="@+id/button4" 
      android:background="@drawable/button_style" 
      android:fontFamily="sans-serif" 
      android:textColor="@drawable/button_style" 
      android:textSize="20sp" 
      android:textAllCaps="false" 
      android:layout_marginRight="5dp" 
      android:layout_weight="1" 
      android:layout_width="0dp" 
      android:onClick="onClick1 (sparkMain)" /> 

     <Button 
      android:text="5" 
      android:layout_height="36dp" 
      android:id="@+id/button5" 
      android:background="@drawable/button_style" 
      android:fontFamily="sans-serif" 
      android:textColor="@drawable/button_style" 
      android:textSize="20sp" 
      android:textAllCaps="false" 
      android:layout_marginRight="5dp" 
      android:layout_weight="1" 
      android:layout_width="0dp" 
      android:onClick="onClick1 (sparkMain)" /> 

     <Button 
      android:text="6" 
      android:layout_height="36dp" 
      android:id="@+id/button6" 
      android:background="@drawable/button_style" 
      android:fontFamily="sans-serif" 
      android:textColor="@drawable/button_style" 
      android:textSize="20sp" 
      android:textAllCaps="false" 
      android:layout_marginRight="5dp" 
      android:layout_weight="1" 
      android:layout_width="0dp" 
      android:onClick="onClick1 (sparkMain)" /> 

     <Button 
      android:text="-" 
      android:layout_height="36dp" 
      android:id="@+id/buttonSub" 
      android:background="@drawable/operator_style" 
      android:fontFamily="sans-serif" 
      android:textColor="@drawable/operator_style" 
      android:textSize="20sp" 
      android:textAllCaps="false" 
      android:layout_width="0dp" 
      android:layout_weight="0.735" 
      android:onClick="onClick1 (sparkMain)" /> 
    </LinearLayout> 

    <LinearLayout 
     android:orientation="horizontal" 
     android:layout_width="match_parent" 
     android:layout_height="40dp"> 

     <Button 
      android:text="1" 
      android:layout_height="36dp" 
      android:id="@+id/button1" 
      android:background="@drawable/button_style" 
      android:fontFamily="sans-serif" 
      android:textColor="@drawable/button_style" 
      android:textSize="20sp" 
      android:textAllCaps="false" 
      android:layout_marginRight="5dp" 
      android:layout_weight="1" 
      android:layout_width="0dp" 
      android:onClick="onClick1 (sparkMain)" /> 

     <Button 
      android:text="2" 
      android:layout_height="36dp" 
      android:id="@+id/button2" 
      android:background="@drawable/button_style" 
      android:fontFamily="sans-serif" 
      android:textColor="@drawable/button_style" 
      android:textSize="20sp" 
      android:textAllCaps="false" 
      android:layout_marginRight="5dp" 
      android:layout_weight="1" 
      android:layout_width="0dp" 
      android:onClick="onClick1 (sparkMain)" /> 

     <Button 
      android:text="3" 
      android:layout_height="36dp" 
      android:id="@+id/button3" 
      android:background="@drawable/button_style" 
      android:fontFamily="sans-serif" 
      android:textColor="@drawable/button_style" 
      android:textSize="20sp" 
      android:textAllCaps="false" 
      android:layout_marginRight="5dp" 
      android:layout_weight="1" 
      android:layout_width="0dp" 
      android:onClick="onClick1 (sparkMain)" /> 

     <Button 
      android:text="+" 
      android:layout_height="36dp" 
      android:id="@+id/buttonAdd" 
      android:background="@drawable/operator_style" 
      android:fontFamily="sans-serif" 
      android:textColor="@drawable/operator_style" 
      android:textSize="20sp" 
      android:textAllCaps="false" 
      android:layout_width="0dp" 
      android:layout_weight="0.735" 
      android:onClick="onClick1 (sparkMain)" /> 
    </LinearLayout> 

    <LinearLayout 
     android:orientation="horizontal" 
     android:layout_width="match_parent" 
     android:layout_height="36dp"> 

     <Button 
      android:text="0" 
      android:layout_height="36dp" 
      android:id="@+id/button0" 
      android:background="@drawable/button_style" 
      android:fontFamily="sans-serif" 
      android:textColor="@drawable/button_style" 
      android:textSize="20sp" 
      android:textAllCaps="false" 
      android:layout_marginRight="5dp" 
      android:layout_weight="1" 
      android:layout_width="0dp" 
      android:onClick="onClick1 (sparkMain)" /> 

     <Button 
      android:text="." 
      android:layout_height="36dp" 
      android:id="@+id/buttonDec" 
      android:background="@drawable/button_style" 
      android:fontFamily="sans-serif" 
      android:textColor="@drawable/button_style" 
      android:textSize="20sp" 
      android:textAllCaps="false" 
      android:layout_marginRight="5dp" 
      android:layout_weight="1" 
      android:layout_width="0dp" /> 

     <Button 
      android:text="=" 
      android:layout_height="36dp" 
      android:id="@+id/buttonEqual" 
      android:background="#f49542" 
      android:fontFamily="sans-serif-medium" 
      android:textColor="#FFFFFF" 
      android:textSize="20sp" 
      android:textAllCaps="false" 
      android:layout_weight="1.78" 
      android:layout_width="0dp" 
      android:onClick="onClick (sparkMain)" /> 
    </LinearLayout> 
</LinearLayout> 

</RelativeLayout>

Irgendwelche Ideen, warum es bei so einer einfachen Aktion Ausnahmen gibt?

Quelle

2016-10-20 RThomP

Bitte teilen Sie Ihre spark_activity_main xml –

Meine schlechte, bearbeitet das OP – RThomP

Darf ich fragen, wo Sie gelernt haben, dass 'onClick1 (sparkMain)' ist die richtige Syntax? –

In Ihrem xml implementiert,

android:onClick="onClick1 (sparkMain)"

verursacht das Problem. Bitte ändern

android:onClick="onClick1 (sparkMain)"

android:onClick="onClick1"

Es wird das Problem lösen.

Quelle

2016-10-20 03:54:33

Ihre Antwort ist korrekt, und obwohl Phan Van Linh zuerst gepostet hat, dachte ich, dass Sie den Repräsentanten bekommen sollten, da Phan keinen Mangel an Wiederholungen hat. – RThomP

Ihre App wirft FATAL Exception. Ausnahmen werden nicht zur Kompilierzeit erkannt, sondern zur Laufzeit. Sie haben in Ihrem XML-Code das Attribut android: onClick definiert und die Methode, die Sie zugewiesen haben, wurde nicht gefunden. Versuchen Sie, den Namen der Methode zu ändern, oder ich denke, dass Sie OnClickListener() verwenden sollten. Das wird dir auf jeden Fall helfen.

Nur Google, wie onClickListeners für Schaltfläche in Android implementieren.

Quelle

2016-10-20 03:48:44

In Ihrer XML-Datei. Ändern Sie einfach

android:onClick="onClick1 (sparkMain)"

android:onClick="onClick1"

Sie können aber auch here überprüfen Sie die richtige Art und Weise zu sehen, auf Klick in Schaltfläche

Quelle

2016-10-20 03:50:36

Just tat dies, wirft immer noch die Ausnahme – RThomP

stellen Sie sicher, dass Sie alle Themen in XML-Datei ändern. dann wenn es noch passiert, bitte teilen Sie die neue Logcat für mich –

Ich tat und zuerst es funktionierte nicht, aber dann habe ich wieder Run und es funktioniert jetzt. Vielen Dank. – RThomP

Android App Probleme

Antwort

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