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Приложение перестает работать в Android Emulator

2015-06-22 2 views
3

Я делаю приложение, в котором пользователь вводит два номера в двух текстовых полях, а затем нажмите кнопку «Добавить», и приложение генерирует тост, который показывает сумму двух чисел. Приложение запускается, но когда я нажимаю кнопку «Добавить», он говорит: «К сожалению, ToastSum перестала работать». Что я сделал не так?Приложение перестает работать в Android Emulator

Вот файл XML: (activity_main.xml)

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
android:layout_width="fill_parent" 
android:layout_height="fill_parent" > 

<EditText 
    android:id="@+id/n1" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:layout_alignParentTop="true" 
    android:layout_centerHorizontal="true" 
    android:layout_marginTop="56dp" 
    android:hint="number 1" 
    android:ems="10" > 

    <requestFocus /> 
</EditText> 

<EditText 
    android:id="@+id/n2" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:layout_below="@+id/n1" 
    android:layout_centerHorizontal="true" 
    android:layout_marginTop="50dp" 
    android:hint="number 2" 
    android:ems="10" /> 

<Button 
    android:id="@+id/b1" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:layout_below="@+id/n2" 
    android:layout_centerHorizontal="true" 
    android:layout_marginTop="48dp" 
    android:text="Add" /> 

</RelativeLayout>

Вот код Java: (MainActivity.java)

package com.example.toastsum; 
import android.support.v7.app.ActionBarActivity; 
import android.os.Bundle; 
import android.view.Menu; 
import android.view.MenuItem; 
import android.view.View; 
import android.view.View.OnClickListener; 
import android.widget.Button; 
import android.widget.EditText; 
import android.widget.Toast; 

@SuppressWarnings("deprecation") 
public class MainActivity extends ActionBarActivity { 
    Button add; 
    EditText t1,t2; 
    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_main); 
    add=(Button) findViewById(R.id.b1); 
    t1=(EditText) findViewById(R.id.n1); 
    t2=(EditText) findViewById(R.id.n2); 
    add.setOnClickListener(new OnClickListener() { 

     @Override 
     public void onClick(View arg0) { 
      // TODO Auto-generated method stub 
      while(t1.toString().equals(null) || t2.toString().equals(null)) 
      { 
       Toast.makeText(MainActivity.this, "Enter two numbers", Toast.LENGTH_SHORT).show(); 
      } 
      double d1,d2; 
      d1=Double.parseDouble(t1.toString()); 
      d2=Double.parseDouble(t2.toString()); 
      d1+=d2; 
      String s=String.valueOf(d1); 
      Toast.makeText(MainActivity.this,s, Toast.LENGTH_LONG).show(); 
     } 
    }); 

} 
@Override 
public boolean onCreateOptionsMenu(Menu menu) { 
    getMenuInflater().inflate(R.menu.main, menu); 
    return true; 
} 

@Override 
public boolean onOptionsItemSelected(MenuItem item) { 

    int id = item.getItemId(); 
    if (id == R.id.action_settings) { 
     return true; 
    } 
    return super.onOptionsItemSelected(item); 
}

Вот AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?> 
<manifest xmlns:android="http://schemas.android.com/apk/res/android" 
package="com.example.toastsum" 
android:versionCode="1" 
android:versionName="1.0" > 

<uses-sdk 
    android:minSdkVersion="8" 
    android:targetSdkVersion="22" /> 


<application 
    android:allowBackup="true" 
    android:icon="@drawable/ic_launcher" 
    android:label="@string/app_name" 
    android:theme="@style/AppTheme" > 
    <activity 
     android:name=".MainActivity" 
     android:label="@string/app_name" > 
     <intent-filter> 
      <action android:name="android.intent.action.MAIN" /> 

      <category android:name="android.intent.category.LAUNCHER" /> 
     </intent-filter> 
    </activity> 
</application>

А вот Logcat:

06-22 12:11:11.789: E/AndroidRuntime(1225): FATAL EXCEPTION: main 
06-22 12:11:11.789: E/AndroidRuntime(1225): Process: com.example.toastsum, PID: 1225 
06-22 12:11:11.789: E/AndroidRuntime(1225): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.toastsum/com.example.toastsum.MainActivity}: java.lang.NumberFormatException: Invalid double: "android.support.v7.widget.AppCompatEditText{10b5c225 VFED..CL .F....I. 0,0-0,0 #7f09004f app:id/n1}" 
06-22 12:11:11.789: E/AndroidRuntime(1225):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2325) 
06-22 12:11:11.789: E/AndroidRuntime(1225):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2390) 
06-22 12:11:11.789: E/AndroidRuntime(1225):  at android.app.ActivityThread.access$800(ActivityThread.java:151) 
06-22 12:11:11.789: E/AndroidRuntime(1225):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303) 
06-22 12:11:11.789: E/AndroidRuntime(1225):  at android.os.Handler.dispatchMessage(Handler.java:102) 
06-22 12:11:11.789: E/AndroidRuntime(1225):  at android.os.Looper.loop(Looper.java:135) 
06-22 12:11:11.789: E/AndroidRuntime(1225):  at android.app.ActivityThread.main(ActivityThread.java:5257) 
06-22 12:11:11.789: E/AndroidRuntime(1225):  at java.lang.reflect.Method.invoke(Native Method) 
06-22 12:11:11.789: E/AndroidRuntime(1225):  at java.lang.reflect.Method.invoke(Method.java:372) 
06-22 12:11:11.789: E/AndroidRuntime(1225):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903) 
06-22 12:11:11.789: E/AndroidRuntime(1225):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698) 
06-22 12:11:11.789: E/AndroidRuntime(1225): Caused by: java.lang.NumberFormatException: Invalid double: "android.support.v7.widget.AppCompatEditText{10b5c225 VFED..CL .F....I. 0,0-0,0 #7f09004f app:id/n1}" 
06-22 12:11:11.789: E/AndroidRuntime(1225):  at java.lang.StringToReal.invalidReal(StringToReal.java:63) 
06-22 12:11:11.789: E/AndroidRuntime(1225):  at java.lang.StringToReal.initialParse(StringToReal.java:114) 
06-22 12:11:11.789: E/AndroidRuntime(1225):  at java.lang.StringToReal.parseDouble(StringToReal.java:282) 
06-22 12:11:11.789: E/AndroidRuntime(1225):  at java.lang.Double.parseDouble(Double.java:301) 
06-22 12:11:11.789: E/AndroidRuntime(1225):  at com.example.toastsum.MainActivity.onCreate(MainActivity.java:27) 
06-22 12:11:11.789: E/AndroidRuntime(1225):  at android.app.Activity.performCreate(Activity.java:5990) 
06-22 12:11:11.789: E/AndroidRuntime(1225):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1106) 
06-22 12:11:11.789: E/AndroidRuntime(1225):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2278) 
06-22 12:11:11.789: E/AndroidRuntime(1225):  ... 10 more 
06-22 12:13:45.489: E/AndroidRuntime(1278): FATAL EXCEPTION: main 
06-22 12:13:45.489: E/AndroidRuntime(1278): Process: com.example.toastsum, PID: 1278 
06-22 12:13:45.489: E/AndroidRuntime(1278): java.lang.NumberFormatException: Invalid double: "android.support.v7.widget.AppCompatEditText{3850235a VFED..CL ........ 80,84-400,152 #7f09004f app:id/n1}" 
06-22 12:13:45.489: E/AndroidRuntime(1278):  at java.lang.StringToReal.invalidReal(StringToReal.java:63) 
06-22 12:13:45.489: E/AndroidRuntime(1278):  at java.lang.StringToReal.initialParse(StringToReal.java:114) 
06-22 12:13:45.489: E/AndroidRuntime(1278):  at java.lang.StringToReal.parseDouble(StringToReal.java:282) 
06-22 12:13:45.489: E/AndroidRuntime(1278):  at java.lang.Double.parseDouble(Double.java:301) 
06-22 12:13:45.489: E/AndroidRuntime(1278):  at com.example.toastsum.MainActivity$1.onClick(MainActivity.java:34) 
06-22 12:13:45.489: E/AndroidRuntime(1278):  at android.view.View.performClick(View.java:4780) 
06-22 12:13:45.489: E/AndroidRuntime(1278):  at android.view.View$PerformClick.run(View.java:19866) 
06-22 12:13:45.489: E/AndroidRuntime(1278):  at android.os.Handler.handleCallback(Handler.java:739) 
06-22 12:13:45.489: E/AndroidRuntime(1278):  at android.os.Handler.dispatchMessage(Handler.java:95) 
06-22 12:13:45.489: E/AndroidRuntime(1278):  at android.os.Looper.loop(Looper.java:135) 
06-22 12:13:45.489: E/AndroidRuntime(1278):  at android.app.ActivityThread.main(ActivityThread.java:5257) 
06-22 12:13:45.489: E/AndroidRuntime(1278):  at java.lang.reflect.Method.invoke(Native Method) 
06-22 12:13:45.489: E/AndroidRuntime(1278):  at java.lang.reflect.Method.invoke(Method.java:372) 
06-22 12:13:45.489: E/AndroidRuntime(1278):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903) 
06-22 12:13:45.489: E/AndroidRuntime(1278):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698) 
06-22 12:16:15.820: E/AndroidRuntime(1314): FATAL EXCEPTION: main 
06-22 12:16:15.820: E/AndroidRuntime(1314): Process: com.example.toastsum, PID: 1314 
06-22 12:16:15.820: E/AndroidRuntime(1314): java.lang.NumberFormatException: Invalid double: "android.support.v7.widget.AppCompatEditText{6ee1150 VFED..CL .F...... 80,84-400,152 #7f09004f app:id/n1}" 
06-22 12:16:15.820: E/AndroidRuntime(1314):  at java.lang.StringToReal.invalidReal(StringToReal.java:63) 
06-22 12:16:15.820: E/AndroidRuntime(1314):  at java.lang.StringToReal.initialParse(StringToReal.java:114) 
06-22 12:16:15.820: E/AndroidRuntime(1314):  at java.lang.StringToReal.parseDouble(StringToReal.java:282) 
06-22 12:16:15.820: E/AndroidRuntime(1314):  at java.lang.Double.parseDouble(Double.java:301) 
06-22 12:16:15.820: E/AndroidRuntime(1314):  at com.example.toastsum.MainActivity$1.onClick(MainActivity.java:34) 
06-22 12:16:15.820: E/AndroidRuntime(1314):  at android.view.View.performClick(View.java:4780) 
06-22 12:16:15.820: E/AndroidRuntime(1314):  at android.view.View$PerformClick.run(View.java:19866) 
06-22 12:16:15.820: E/AndroidRuntime(1314):  at android.os.Handler.handleCallback(Handler.java:739) 
06-22 12:16:15.820: E/AndroidRuntime(1314):  at android.os.Handler.dispatchMessage(Handler.java:95) 
06-22 12:16:15.820: E/AndroidRuntime(1314):  at android.os.Looper.loop(Looper.java:135) 
06-22 12:16:15.820: E/AndroidRuntime(1314):  at android.app.ActivityThread.main(ActivityThread.java:5257) 
06-22 12:16:15.820: E/AndroidRuntime(1314):  at java.lang.reflect.Method.invoke(Native Method) 
06-22 12:16:15.820: E/AndroidRuntime(1314):  at java.lang.reflect.Method.invoke(Method.java:372) 
06-22 12:16:15.820: E/AndroidRuntime(1314):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903) 
06-22 12:16:15.820: E/AndroidRuntime(1314):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698) 
06-22 12:18:47.286: E/AndroidRuntime(1338): FATAL EXCEPTION: main 
06-22 12:18:47.286: E/AndroidRuntime(1338): Process: com.example.toastsum, PID: 1338 
06-22 12:18:47.286: E/AndroidRuntime(1338): java.lang.NumberFormatException: Invalid double: "android.support.v7.widget.AppCompatEditText{9d1d602 VFED..CL .F...... 80,84-400,152 #7f09004f app:id/n1}" 
06-22 12:18:47.286: E/AndroidRuntime(1338):  at java.lang.StringToReal.invalidReal(StringToReal.java:63) 
06-22 12:18:47.286: E/AndroidRuntime(1338):  at java.lang.StringToReal.initialParse(StringToReal.java:114) 
06-22 12:18:47.286: E/AndroidRuntime(1338):  at java.lang.StringToReal.parseDouble(StringToReal.java:282) 
06-22 12:18:47.286: E/AndroidRuntime(1338):  at java.lang.Double.parseDouble(Double.java:301) 
06-22 12:18:47.286: E/AndroidRuntime(1338):  at com.example.toastsum.MainActivity$1.onClick(MainActivity.java:34) 
06-22 12:18:47.286: E/AndroidRuntime(1338):  at android.view.View.performClick(View.java:4780) 
06-22 12:18:47.286: E/AndroidRuntime(1338):  at android.view.View$PerformClick.run(View.java:19866) 
06-22 12:18:47.286: E/AndroidRuntime(1338):  at android.os.Handler.handleCallback(Handler.java:739) 
06-22 12:18:47.286: E/AndroidRuntime(1338):  at android.os.Handler.dispatchMessage(Handler.java:95) 
06-22 12:18:47.286: E/AndroidRuntime(1338):  at android.os.Looper.loop(Looper.java:135) 
06-22 12:18:47.286: E/AndroidRuntime(1338):  at android.app.ActivityThread.main(ActivityThread.java:5257) 
06-22 12:18:47.286: E/AndroidRuntime(1338):  at java.lang.reflect.Method.invoke(Native Method) 
06-22 12:18:47.286: E/AndroidRuntime(1338):  at java.lang.reflect.Method.invoke(Method.java:372) 
06-22 12:18:47.286: E/AndroidRuntime(1338):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903) 
06-22 12:18:47.286: E/AndroidRuntime(1338):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698) 
06-22 12:24:46.435: E/AndroidRuntime(1392): FATAL EXCEPTION: main 
06-22 12:24:46.435: E/AndroidRuntime(1392): Process: com.example.toastsum, PID: 1392 
06-22 12:24:46.435: E/AndroidRuntime(1392): java.lang.NumberFormatException: Invalid double: "android.support.v7.widget.AppCompatEditText{9d1d602 VFED..CL .F....ID 80,84-400,152 #7f09004f app:id/n1}" 
06-22 12:24:46.435: E/AndroidRuntime(1392):  at java.lang.StringToReal.invalidReal(StringToReal.java:63) 
06-22 12:24:46.435: E/AndroidRuntime(1392):  at java.lang.StringToReal.initialParse(StringToReal.java:114) 
06-22 12:24:46.435: E/AndroidRuntime(1392):  at java.lang.StringToReal.parseDouble(StringToReal.java:282) 
06-22 12:24:46.435: E/AndroidRuntime(1392):  at java.lang.Double.parseDouble(Double.java:301) 
06-22 12:24:46.435: E/AndroidRuntime(1392):  at com.example.toastsum.MainActivity$1.onClick(MainActivity.java:34) 
06-22 12:24:46.435: E/AndroidRuntime(1392):  at android.view.View.performClick(View.java:4780) 
06-22 12:24:46.435: E/AndroidRuntime(1392):  at android.view.View$PerformClick.run(View.java:19866) 
06-22 12:24:46.435: E/AndroidRuntime(1392):  at android.os.Handler.handleCallback(Handler.java:739) 
06-22 12:24:46.435: E/AndroidRuntime(1392):  at android.os.Handler.dispatchMessage(Handler.java:95) 
06-22 12:24:46.435: E/AndroidRuntime(1392):  at android.os.Looper.loop(Looper.java:135) 
06-22 12:24:46.435: E/AndroidRuntime(1392):  at android.app.ActivityThread.main(ActivityThread.java:5257) 
06-22 12:24:46.435: E/AndroidRuntime(1392):  at java.lang.reflect.Method.invoke(Native Method) 
06-22 12:24:46.435: E/AndroidRuntime(1392):  at java.lang.reflect.Method.invoke(Method.java:372) 
06-22 12:24:46.435: E/AndroidRuntime(1392):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903) 
06-22 12:24:46.435: E/AndroidRuntime(1392):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698) 
06-22 12:25:10.723: E/AndroidRuntime(1415): FATAL EXCEPTION: main 
06-22 12:25:10.723: E/AndroidRuntime(1415): Process: com.example.toastsum, PID: 1415 
06-22 12:25:10.723: E/AndroidRuntime(1415): java.lang.NumberFormatException: Invalid double: "android.support.v7.widget.AppCompatEditText{3850235a VFED..CL ........ 80,84-400,152 #7f09004f app:id/n1}" 
06-22 12:25:10.723: E/AndroidRuntime(1415):  at java.lang.StringToReal.invalidReal(StringToReal.java:63) 
06-22 12:25:10.723: E/AndroidRuntime(1415):  at java.lang.StringToReal.initialParse(StringToReal.java:114) 
06-22 12:25:10.723: E/AndroidRuntime(1415):  at java.lang.StringToReal.parseDouble(StringToReal.java:282) 
06-22 12:25:10.723: E/AndroidRuntime(1415):  at java.lang.Double.parseDouble(Double.java:301) 
06-22 12:25:10.723: E/AndroidRuntime(1415):  at com.example.toastsum.MainActivity$1.onClick(MainActivity.java:34) 
06-22 12:25:10.723: E/AndroidRuntime(1415):  at android.view.View.performClick(View.java:4780) 
06-22 12:25:10.723: E/AndroidRuntime(1415):  at android.view.View$PerformClick.run(View.java:19866) 
06-22 12:25:10.723: E/AndroidRuntime(1415):  at android.os.Handler.handleCallback(Handler.java:739) 
06-22 12:25:10.723: E/AndroidRuntime(1415):  at android.os.Handler.dispatchMessage(Handler.java:95) 
06-22 12:25:10.723: E/AndroidRuntime(1415):  at android.os.Looper.loop(Looper.java:135) 
06-22 12:25:10.723: E/AndroidRuntime(1415):  at android.app.ActivityThread.main(ActivityThread.java:5257) 
06-22 12:25:10.723: E/AndroidRuntime(1415):  at java.lang.reflect.Method.invoke(Native Method) 
06-22 12:25:10.723: E/AndroidRuntime(1415):  at java.lang.reflect.Method.invoke(Method.java:372) 
06-22 12:25:10.723: E/AndroidRuntime(1415):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903) 
06-22 12:25:10.723: E/AndroidRuntime(1415):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698) 
06-22 12:28:58.352: E/AndroidRuntime(1440): FATAL EXCEPTION: main 
06-22 12:28:58.352: E/AndroidRuntime(1440): Process: com.example.toastsum, PID: 1440 
06-22 12:28:58.352: E/AndroidRuntime(1440): java.lang.NumberFormatException: Invalid double: "android.support.v7.widget.AppCompatEditText{9d1d602 VFED..CL .F...... 80,84-400,152 #7f09004f app:id/n1}" 
06-22 12:28:58.352: E/AndroidRuntime(1440):  at java.lang.StringToReal.invalidReal(StringToReal.java:63) 
06-22 12:28:58.352: E/AndroidRuntime(1440):  at java.lang.StringToReal.initialParse(StringToReal.java:114) 
06-22 12:28:58.352: E/AndroidRuntime(1440):  at java.lang.StringToReal.parseDouble(StringToReal.java:282) 
06-22 12:28:58.352: E/AndroidRuntime(1440):  at java.lang.Double.parseDouble(Double.java:301) 
06-22 12:28:58.352: E/AndroidRuntime(1440):  at com.example.toastsum.MainActivity$1.onClick(MainActivity.java:34) 
06-22 12:28:58.352: E/AndroidRuntime(1440):  at android.view.View.performClick(View.java:4780) 
06-22 12:28:58.352: E/AndroidRuntime(1440):  at android.view.View$PerformClick.run(View.java:19866) 
06-22 12:28:58.352: E/AndroidRuntime(1440):  at android.os.Handler.handleCallback(Handler.java:739) 
06-22 12:28:58.352: E/AndroidRuntime(1440):  at android.os.Handler.dispatchMessage(Handler.java:95) 
06-22 12:28:58.352: E/AndroidRuntime(1440):  at android.os.Looper.loop(Looper.java:135) 
06-22 12:28:58.352: E/AndroidRuntime(1440):  at android.app.ActivityThread.main(ActivityThread.java:5257) 
06-22 12:28:58.352: E/AndroidRuntime(1440):  at java.lang.reflect.Method.invoke(Native Method) 
06-22 12:28:58.352: E/AndroidRuntime(1440):  at java.lang.reflect.Method.invoke(Method.java:372) 
06-22 12:28:58.352: E/AndroidRuntime(1440):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903) 
06-22 12:28:58.352: E/AndroidRuntime(1440):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)

источник

2015-06-22 vaib04

ответ

1

Один из ваших EditText с не содержат действительное двойное значение, которое вызывает один из

d1=Double.parseDouble(t1.toString()); 
d2=Double.parseDouble(t2.toString());

на провал.

Эта проверка

while(t1.toString().equals(null) || t2.toString().equals(null)) { 
    Toast.makeText(MainActivity.this, "Enter two numbers", Toast.LENGTH_SHORT).show(); 
}

неправильно. Это должно быть

if (TextUtils.isEmpty(t1.getText().toString()) || TextUtils.isEmpty(t2.getText().toString()) { 
     Toast.makeText(MainActivity.this, "Enter two numbers", Toast.LENGTH_SHORT).show(); 
     return; 
    }

источник

2015-06-22 07:59:08 Blackbelt

1

Это неправильно. Вы пытаетесь преобразовать EditText в строку и проанализировать ее на двойной.

d1=Double.parseDouble(t1.toString()); 
d2=Double.parseDouble(t2.toString());

Вы, вероятно, хотите

d1 = Double.parseDouble(t1.getText().toString());

Ох, и ваш цикл в то время как выглядит странно. Вы, вероятно, хотите, если чек, и не вернуться, если текст является недействительным

источник

2015-06-22 07:59:46 apals

2

Пожалуйста, замените t1.toString() с t1.getText.toString();

источник

2015-06-22 08:02:42

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