Android App wird nicht aufhören zu stürzen, wenn ich es laufe, Probleme mit ParseInt

Question

Ich mache eine einfache App, um die Kalorien zu zählen, die während des Trainings verbrannt. Es stürzt jedoch ab, wenn ich versuche, einen Edittext in einen int-Wert zu verwandeln. Ich bin auch ein Anfänger in Java und Android Studio, also zögern Sie bitte nicht, detaillierte Erklärungen zu verwenden. Danke im Voraus.

import android.support.v7.widget.AppCompatTextView; 
import android.content.Context; 
import android.net.Uri; 
import android.os.Bundle; 
import android.support.v4.app.Fragment; 
import android.view.LayoutInflater; 
import android.view.View; 
import android.view.ViewGroup; 
import android.widget.AdapterView; 
import android.widget.ArrayAdapter; 
import android.widget.EditText; 
import android.widget.RelativeLayout; 
import android.widget.Spinner; 
import android.widget.TextView; 
import android.widget.Toast; 




public class FirstFragment extends Fragment implements AdapterView.OnItemSelectedListener{ 

    // Store instance variables 
    private String title; 
    private int page; 
    EditText countCal; 
    EditText weight; 
    int cal; 

    Spinner spinner; 

    // newInstance constructor for creating fragment with arguments 
    public static FirstFragment newInstance(int page, String title) { 
     FirstFragment fragmentFirst = new FirstFragment(); 
     Bundle args = new Bundle(); 
     args.putInt("someInt", page); 
     args.putString("someTitle", title); 
     fragmentFirst.setArguments(args); 
     return fragmentFirst; 
    } 

    // Store instance variables based on arguments passed 
    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     page = getArguments().getInt("someInt", 0); 
     title = getArguments().getString("someTitle"); 


    } 

    // Inflate the view for the fragment based on layout XML 
    @Override 
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { 

     View view = inflater.inflate(R.layout.fragment_first, container, false); 
     countCal =(EditText)view.findViewById(R.id.editText); 
     weight = (EditText)view.findViewById(R.id.weight); 

     Spinner spinner = (Spinner)view.findViewById(R.id.spinner); 
     ArrayAdapter<?> adapter = ArrayAdapter.createFromResource(getActivity(), R.array.Exercises, android.R.layout.simple_spinner_item); 
     adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); 
     spinner.setAdapter(adapter); 
     spinner.setOnItemSelectedListener(this); 
     return view; 
    } 

    @Override 
    public void onItemSelected(AdapterView<?> parent, View view, int i, long l) { 

     if (countCal.getText().toString().trim().length() == 0) { 
      if (weight.getText().toString().trim().length() == 0) { 

      } 
     } else { 
      if (parent.getItemAtPosition(i).toString() == "Jogging") { 
       Toast.makeText(parent.getContext(), (int) (0.0175 * 7 * Integer.parseInt(weight.getText().toString()) * Integer.parseInt(weight.getText().toString())), Toast.LENGTH_SHORT).show(); 
      } else if (parent.getItemAtPosition(i).toString() == "Walking") { 
       Toast.makeText(parent.getContext(), (int) (0.0175 * 3.5 * Integer.parseInt(weight.getText().toString()) * Integer.parseInt(weight.getText().toString())), Toast.LENGTH_SHORT).show(); 
      } else if (parent.getItemAtPosition(i).toString() == "Free Weights") { 
       Toast.makeText(parent.getContext(), (int) (0.0175 * 4.5 * Integer.parseInt(weight.getText().toString()) * Integer.parseInt(weight.getText().toString())), Toast.LENGTH_SHORT).show(); 
      } 

     Toast.makeText(parent.getContext(), "Enter the Values!", Toast.LENGTH_SHORT).show(); 
     } 


    } 

    @Override 
    public void onNothingSelected(AdapterView<?> adapterView) { 

    } 
} 
      } 

hier ist das Fehlerprotokoll

08-08 10:53:46.211 31221-31221/stefdude1999.fitness E/AndroidRuntime: FATAL EXCEPTION: main 
Process: stefdude1999.fitness, PID: 31221 
java.lang.ClassCastException: android.support.v7.widget.AppCompatTextView cannot be cast to android.widget.EditText 
    at stefdude1999.fitness.FirstFragment.onCreateView(FirstFragment.java:56) 
    at android.support.v4.app.Fragment.performCreateView(Fragment.java:2074) 
    at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1104) 
    at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1286) 
    at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:758) 
    at android.support.v4.app.FragmentManagerImpl.execSingleAction(FragmentManager.java:1632) 
    at android.support.v4.app.BackStackRecord.commitNowAllowingStateLoss(BackStackRecord.java:637) 
    at android.support.v4.app.FragmentPagerAdapter.finishUpdate(FragmentPagerAdapter.java:143) 
    at android.support.v4.view.ViewPager.populate(ViewPager.java:1237) 
    at android.support.v4.view.ViewPager.populate(ViewPager.java:1085) 
    at android.support.v4.view.ViewPager.onMeasure(ViewPager.java:1611) 
    at android.view.View.measure(View.java:18794) 
    at android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:715) 
    at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:461) 
    at android.view.View.measure(View.java:18794) 
    at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5951) 
    at android.widget.FrameLayout.onMeasure(FrameLayout.java:194) 
    at android.support.v7.widget.ContentFrameLayout.onMeasure(ContentFrameLayout.java:135) 
    at android.view.View.measure(View.java:18794) 
    at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5951) 
    at android.support.v7.widget.ActionBarOverlayLayout.onMeasure(ActionBarOverlayLayout.java:391) 
    at android.view.View.measure(View.java:18794) 
    at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5951) 
    at android.widget.FrameLayout.onMeasure(FrameLayout.java:194) 
    at android.view.View.measure(View.java:18794) 
    at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5951) 
    at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1465) 
    at android.widget.LinearLayout.measureVertical(LinearLayout.java:748) 
    at android.widget.LinearLayout.onMeasure(LinearLayout.java:630) 
    at android.view.View.measure(View.java:18794) 
    at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5951) 
    at android.widget.FrameLayout.onMeasure(FrameLayout.java:194) 
    at com.android.internal.policy.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2643) 
    at android.view.View.measure(View.java:18794) 
    at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:2100) 
    at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1216) 
    at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1452) 
    at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1107) 
    at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6013) 
    at android.view.Choreographer$CallbackRecord.run(Choreographer.java:858) 
    at android.view.Choreographer.doCallbacks(Choreographer.java:670) 
    at android.view.Choreographer.doFrame(Choreographer.java:606) 
    at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:844) 
    at android.os.Handler.handleCallback(Handler.java:739) 
    at android.os.Handler.dispatchMessage(Handler.java:95) 
    at android.os.Looper.loop(Looper.java:148) 
    at android.app.ActivityThread.main(ActivityThread.java:5417) 
    at java.lang.reflect.Method.invoke(Native Method) 
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) 
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) 

Hier mein XML-Layout

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
xmlns:tools="http://schemas.android.com/tools" 
android:layout_width="match_parent" 
android:layout_height="match_parent" 
tools:context="stefdude1999.fitness.FirstFragment" 
android:id="@+id/content"> 

<!-- TODO: Update blank fragment layout --> 

<Spinner 
    android:id="@+id/spinner" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:layout_gravity="right|top" 
    android:layout_alignParentTop="true" 
    android:layout_alignParentRight="true" 
    android:layout_alignParentEnd="true" /> 

<EditText 
    android:layout_width="113dp" 
    android:layout_height="wrap_content" 
    android:inputType="number" 
    android:ems="10" 
    android:id="@+id/editText" 
    android:layout_gravity="left|top" 
    android:layout_alignParentTop="true" 
    android:layout_alignParentLeft="true" 
    android:layout_alignParentStart="true" /> 

<TextView 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:text="Enter Minutes" 
    android:id="@+id/textView" 
    android:layout_gravity="left|top" 
    android:layout_below="@+id/editText" 
    android:layout_alignParentLeft="true" 
    android:layout_alignParentStart="true" /> 

<EditText 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:inputType="number" 
    android:ems="10" 
    android:id="@+id/editText2" 
    android:layout_below="@+id/textView" 
    android:layout_alignParentLeft="true" 
    android:layout_alignParentStart="true" 
    android:layout_alignRight="@+id/editText" 
    android:layout_alignEnd="@+id/editText" /> 

<TextView 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:text="Enter Weight (Kg)" 
    android:id="@+id/weight" 
    android:layout_below="@+id/editText2" 
    android:layout_alignParentLeft="true" 
    android:layout_alignParentStart="true" /> 

Answer 1

Ich bin nicht sicher ist, was es ist, weil Sie nicht Ihre XML gezeigt haben, Layouts, aber entweder countCal oder weight ist kein editText. Einer oder beide sind eigentlich ein AppCompatTextView. Dies ist im Grunde eine TextView, die ältere Versionen von Android unterstützt.

Beginnen Sie mit dem Import android.widget.TextView und versuchen Sie dann, die Besetzung einzeln zu ändern. So versuchen:

weight = (TextView) view.findViewById(R.id.weight); 

Und wenn das nicht funktioniert, schalten Sie es wieder auf den ursprünglichen und versuchen:

countCal = (TextView) view.findViewById(R.id.editText); 

Wenn das nicht funktioniert, versuchen beide zu TextView Gießen.

Wenn das immer noch nicht funktioniert, versuchen Sie die gleiche Methode, aber importieren Sie android.support.v7.widget.AppCompatTextView und werfen Sie sie auf AppCompatTextView. Hoffe das hilft!

BEARBEITEN Sie:

Got it! In Ihrem XML-Layout heißt es, dass das Widget R.id.weight ein TextView ist! Wenn Sie nur Gewicht auf TextView werfen und das andere als EditText behalten, sollte es funktionieren!