当按钮被点击时，我的程序崩溃了。为什么？

-2

04-03 20:59:46.189: E/AndroidRuntime(362): android.content.res.Resources$NotFoundException: String resource ID #0x0 
04-03 20:59:46.189: E/AndroidRuntime(362): at android.content.res.Resources.getText(Resources.java:201) 
04-03 20:59:46.189: E/AndroidRuntime(362): at android.widget.TextView.setText(TextView.java:2857) 
04-03 20:59:46.189: E/AndroidRuntime(362): at coin.calc.wilson.CoinCalculatorActivity$1.onClick(CoinCalculatorActivity.java:65) 
04-03 20:59:46.189: E/AndroidRuntime(362): at android.view.View.performClick(View.java:2485) 
04-03 20:59:46.189: E/AndroidRuntime(362): at android.view.View$PerformClick.run(View.java:9080) 
04-03 20:59:46.189: E/AndroidRuntime(362): at android.os.Handler.handleCallback(Handler.java:587) 
04-03 20:59:46.189: E/AndroidRuntime(362): at android.os.Handler.dispatchMessage(Handler.java:92) 
04-03 20:59:46.189: E/AndroidRuntime(362): at android.os.Looper.loop(Looper.java:123) 
04-03 20:59:46.189: E/AndroidRuntime(362): at android.app.ActivityThread.main(ActivityThread.java:3683) 
04-03 20:59:46.189: E/AndroidRuntime(362): at java.lang.reflect.Method.invokeNative(Native Method) 
04-03 20:59:46.189: E/AndroidRuntime(362): at java.lang.reflect.Method.invoke(Method.java:507) 
04-03 20:59:46.189: E/AndroidRuntime(362): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839) 
04-03 20:59:46.189: E/AndroidRuntime(362): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597) 
04-03 20:59:46.189: E/AndroidRuntime(362): at dalvik.system.NativeStart.main(Native Method) 
04-03 20:59:49.720: I/Process(362): Sending signal. PID: 362 SIG: 9

这里是我的Java代码：

package coin.calc.wilson; 

import android.app.Activity; 
import android.os.Bundle; 
import android.view.View; 
import android.view.View.OnClickListener; 
import android.widget.Button; 
import android.widget.EditText; 
import android.widget.TextView; 

public class CoinCalculatorActivity extends Activity { 
/** Called when the activity is first created. */ 
@Override 
public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.main); 

    Button solve = (Button)findViewById(R.id.bsolve); 
    solve.setOnClickListener(new OnClickListener() { 

     public void onClick(View v) { 
    int td, tc, twenty, ten, five, one, quarter, dime, nickel, penny; 
    EditText tdet = (EditText)findViewById(R.id.etdollars); 
    EditText tcet = (EditText)findViewById(R.id.etcents); 
     try{ 
      td = Integer.parseInt(tdet.getText().toString()); 
      tc = Integer.parseInt(tdet.getText().toString()); 
     } 
     catch (NumberFormatException e) { 
      td = tc = 0; 
     } 

    if (td < 0 || tc < 0){ 
     /* ERROR */ 
    } 
    else{ 
     if(td == 0){ 
      twenty = ten = five = one = 0; 
     } 
     else{ 
      one = td%5; 

      if(td >= 20){ 
       twenty = (td/20)-((td%20)/20); 
      } 
      else{ 
       twenty = 0; 
      } 

      int tda20 = td-(20*twenty); 
      if (tda20 >= 10){ 
       ten = (tda20/10)-((tda20%10)/10); 
      } 
      else{ 
       ten = 0; 
      } 
      int tda10 = tda20-(10*ten); 
      if(tda10>=5){ 
       five = (tda10/5)-((tda10%5)/5); 
      } 
      else{ 
       five = 0; 
      } 
      TextView tv20 = (TextView)findViewById(R.id.tvtwenty); 
      tv20.setText(twenty); 
      TextView tv10 = (TextView)findViewById(R.id.tvten); 
      tv10.setText(ten); 
      TextView tv5 = (TextView)findViewById(R.id.tvfive); 
      tv5.setText(five); 
      TextView tv1 = (TextView)findViewById(R.id.tvone); 
      tv1.setText(one); 

      } 


     if(tc == 0){ 
      quarter = dime = nickel = penny = 0; 
     } 
     else{ 
      penny = tc%5; 

      if(tc >= 25){ 
       quarter = (tc/25)-((td%25)/25); 
      } 
      else{ 
       quarter = 0; 
      } 

      int tcaq = tc-(25*quarter); 
      if (tcaq >= 10){ 
       dime = (tcaq/10)-((tcaq%10)/10); 
      } 
      else{ 
       dime = 0; 
      } 
      int tcad = tcaq-(10*ten); 
      if(tcad>=5){ 
       nickel = (tcad/5)-((tcad%5)/5); 
      } 
      else{ 
       nickel = 0; 
      } 
      TextView tvq = (TextView)findViewById(R.id.tvquarter); 
      tvq.setText(quarter); 
      TextView tvd = (TextView)findViewById(R.id.tvdime); 
      tvd.setText(dime); 
      TextView tvn = (TextView)findViewById(R.id.tvnickel); 
      tvn.setText(nickel); 
      TextView tvp = (TextView)findViewById(R.id.tvpenny); 
      tvp.setText(penny); 

      } 
} 
}});} 
}

这里是XML：

<TableRow 
    android:id="@+id/tableRow1" 
    android:layout_height="wrap_content" 
    android:gravity="center" > 

    <EditText 
     android:id="@+id/etdollars" 
     android:layout_width="156dp" 
     android:layout_height="wrap_content" 
     android:ems="10" 
     android:inputType="number" /> 

    <TextView 
     android:id="@+id/textView1" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:text="dollars" 
     android:textAppearance="?android:attr/textAppearanceLarge" /> 

</TableRow> 

<TableRow 
    android:id="@+id/tableRow2" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:gravity="center" > 

    <EditText 
     android:id="@+id/etcents" 
     android:layout_width="156dp" 
     android:layout_height="wrap_content" 
     android:ems="10" 
     android:inputType="number" /> 
    <TextView 
     android:id="@+id/textView1" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:text="cents" 
     android:textAppearance="?android:attr/textAppearanceLarge" /> 
</TableRow> 

<LinearLayout 
    android:layout_width="wrap_content" 
    android:layout_height="60dp" 
    android:gravity="center" > 

    <Button 
     android:id="@+id/bsolve" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:text="Solve!" /> 

</LinearLayout> 


<LinearLayout 
    android:layout_width="wrap_content" 
    android:layout_height="80dp" > 

    <ImageView 
     android:id="@+id/imageView1" 
     android:layout_width="100dp" 
     android:layout_height="80dp" 
     android:layout_weight="0.00" 
     android:layout_marginLeft="8.75dp" 
     android:layout_marginRight="8.75dp" 
     android:src="@drawable/twenty" /> 

    <TextView 
     android:id="@+id/tvtwenty" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_weight="0.00" 
     android:layout_gravity="center_vertical" 
     android:text="0" 
     android:textAppearance="?android:attr/textAppearanceLarge" /> 

    <ImageView 
     android:id="@+id/imageView2" 
     android:layout_width="61dp" 
     android:layout_height="80dp" 
     android:layout_marginLeft="43dp" 
     android:layout_marginRight="13.5dp" 
     android:src="@drawable/cquarter" /> 
    <TextView 
     android:id="@+id/tvquarter" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_weight="0.00" 
     android:layout_gravity="center_vertical" 
     android:text="0" 
     android:textAppearance="?android:attr/textAppearanceLarge" /> 

</LinearLayout> 

<LinearLayout 
    android:layout_width="wrap_content" 
    android:layout_height="80dp" > 

    <ImageView 
     android:id="@+id/imageView1" 
     android:layout_width="100dp" 
     android:layout_height="80dp" 
     android:layout_weight="0.00" 
     android:layout_marginLeft="8.75dp" 
     android:layout_marginRight="8.75dp" 
     android:src="@drawable/ten" /> 

    <TextView 
     android:id="@+id/tvten" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_weight="0.00" 
     android:layout_gravity="center_vertical" 
     android:text="0" 
     android:textAppearance="?android:attr/textAppearanceLarge" /> 

    <ImageView 
     android:id="@+id/imageView2" 
     android:layout_width="61dp" 
     android:layout_height="80dp" 
     android:layout_marginLeft="43dp" 
     android:layout_marginRight="13.5dp" 
     android:src="@drawable/cdime" /> 
    <TextView 
     android:id="@+id/tvdime" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_weight="0.00" 
     android:layout_gravity="center_vertical" 
     android:text="0" 
     android:textAppearance="?android:attr/textAppearanceLarge" /> 

</LinearLayout> 

<LinearLayout 
    android:layout_width="wrap_content" 
    android:layout_height="80dp" > 

    <ImageView 
     android:id="@+id/imageView1" 
     android:layout_width="100dp" 
     android:layout_height="80dp" 
     android:layout_weight="0.00" 
     android:layout_marginLeft="8.75dp" 
     android:layout_marginRight="8.75dp" 
     android:src="@drawable/five" /> 

    <TextView 
     android:id="@+id/tvfive" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_weight="0.00" 
     android:layout_gravity="center_vertical" 
     android:text="0" 
     android:textAppearance="?android:attr/textAppearanceLarge" /> 

    <ImageView 
     android:id="@+id/imageView2" 
     android:layout_width="61dp" 
     android:layout_height="80dp" 
     android:layout_marginLeft="43dp" 
     android:layout_marginRight="13.5dp" 
     android:src="@drawable/cnickel" /> 
    <TextView 
     android:id="@+id/tvnickel" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_weight="0.00" 
     android:layout_gravity="center_vertical" 
     android:text="0" 
     android:textAppearance="?android:attr/textAppearanceLarge" /> 

</LinearLayout> 

<LinearLayout 
    android:layout_width="wrap_content" 
    android:layout_height="80dp" > 

    <ImageView 
     android:id="@+id/imageView1" 
     android:layout_width="100dp" 
     android:layout_height="80dp" 
     android:layout_weight="0.00" 
     android:layout_marginLeft="8.75dp" 
     android:layout_marginRight="8.75dp" 
     android:src="@drawable/one" /> 

    <TextView 
     android:id="@+id/tvone" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_weight="0.00" 
     android:layout_gravity="center_vertical" 
     android:text="0" 
     android:textAppearance="?android:attr/textAppearanceLarge" /> 

    <ImageView 
     android:id="@+id/imageView2" 
     android:layout_width="61dp" 
     android:layout_height="80dp" 
     android:layout_marginLeft="43dp" 
     android:layout_marginRight="13.5dp" 
     android:src="@drawable/cpenny" /> 
    <TextView 
     android:id="@+id/tvpenny" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_weight="0.00" 
     android:layout_gravity="center_vertical" 
     android:text="0" 
     android:textAppearance="?android:attr/textAppearanceLarge" /> 

</LinearLayout> 

</TableLayout>

如果有帮助，我认为错误可能有东西用我使用的资源（八jpgs），但我不知道。该程序运行干净，直到OnClickListener被激活。感谢您的帮助！

来源

2012-04-03 Wilson

对不起，在这里发布所有代码，在其他地方发布logcat只是为了指出你的行65是浪费我们的时间！请减少代码，阅读堆栈跟踪并尝试解决它，然后再发布一切......至少在下次... – WarrenFaith 2012-04-03 21:11:47

调试器是你的朋友。用它来*调试*你的代码。 – 2012-04-03 21:13:43

@WarrenFaith我会的，对不起。 – Wilson 2012-04-03 21:15:00

是这里（在这样的另一行）：

tv20.setText(twenty);

twenty为int而应该是字符串（我想你想显示在TextView的数量）：

tv20.setText(String.valueOf(twenty));

编辑：

所有这些变量具有相同的错误

int td, tc, twenty, ten, five, one, quarter, dime, nickel, penny;

来源

2012-04-03 21:09:14

有道理，谢谢！我会试试看。 – Wilson 2012-04-03 21:11:10

'String.valueOf（twenty）'有点儿丑。用'“”+ twenty'代替:) – 2012-04-03 21:11:42

@TiagoAlmeida well :) – 2012-04-03 21:13:20

尝试移动两个以下行正下方Button solve = (Button)findViewById(R.id.bsolve);之前solve.setOnClickListener(new OnClickListener()

EditText tdet = (EditText)findViewById(R.id.etdollars); 
EditText tcet = (EditText)findViewById(R.id.etcents);

来源

2012-04-03 21:14:47

你有一个小而沉重的错误：

如果您尝试将数/整数到一个TextView，你需要首先将其转换为字符串。如果你不这样做，Android的东西你引用一个内部id，如R.string.mynumber，这不是你想要的。

来源

2012-04-03 21:16:05 WarrenFaith

当按钮被点击时，我的程序崩溃了。为什么？

回答

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