Android无法添加窗口错误

我已经写了一些代码来使用我的自定义对话框为我的应用程序，我认为这是进展顺利，直到我有部队崩溃。我看过我的logcat，它说它无法添加窗口，所以我只是希望有人能帮助我解决这个问题。Android无法添加窗口错误

的logcat：

08-23 02:05:22.836: E/AndroidRuntime(898): FATAL EXCEPTION: main 
08-23 02:05:22.836: E/AndroidRuntime(898): java.lang.NullPointerException 
08-23 02:05:22.836: E/AndroidRuntime(898): at com.theproblemsolver.MainActivity$1.run(MainActivity.java:42) 
08-23 02:05:22.836: E/AndroidRuntime(898): at android.os.Handler.handleCallback(Handler.java:725) 
08-23 02:05:22.836: E/AndroidRuntime(898): at android.os.Handler.dispatchMessage(Handler.java:92) 
08-23 02:05:22.836: E/AndroidRuntime(898): at android.os.Looper.loop(Looper.java:137) 
08-23 02:05:22.836: E/AndroidRuntime(898): at android.app.ActivityThread.main(ActivityThread.java:5041) 
08-23 02:05:22.836: E/AndroidRuntime(898): at java.lang.reflect.Method.invokeNative(Native Method) 
08-23 02:05:22.836: E/AndroidRuntime(898): at java.lang.reflect.Method.invoke(Method.java:511) 
08-23 02:05:22.836: E/AndroidRuntime(898): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793) 
08-23 02:05:22.836: E/AndroidRuntime(898): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560) 
08-23 02:05:22.836: E/AndroidRuntime(898): at dalvik.system.NativeStart.main(Native Method)

MainActivity：

public class MainActivity extends Activity { 

    TextView TPS; 
    TextView TPS1; 
    TextView TPS2; 
    TextView TPS3; 
    Button TPSbutton1; 
    Button getAnswer; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     View mainView = getLayoutInflater().inflate(R.layout.activity_main, null); 

     setContentView(mainView); 

     final Dialog dialog = new Dialog(this); 
     dialog.setContentView(R.layout.customdialog); 
     dialog.setTitle("TheProblemSolver"); 
     mainView.post(new Runnable() { 
      public void run() { 
       dialog.show(); 
       TPS = (TextView) findViewById(R.id.TPS); 
       TPS1 = (TextView) findViewById(R.id.TPS1); 
       TPS2 = (TextView) findViewById(R.id.TPS2); 
       TPS3 = (TextView) findViewById(R.id.TPS3); 
       TPSbutton1 = (Button) findViewById(R.id.TPSbutton1); 

       TPSbutton1.setOnClickListener(new OnClickListener() { 
         @Override 
         public void onClick(View v) { 
          dialog.dismiss(); 
         } 
       }    
         );   

      } 
     }); 

     final EditText et = (EditText) findViewById(R.id.editText1); 

     Button getAnswer = (Button) findViewById(R.id.button1); 
     getAnswer.setOnClickListener(new OnClickListener() { 

     @Override 
     public void onClick(View v) {  
      if (et.getText().toString().length()==0) { 
       Toast.makeText(getApplicationContext(),"Can't Be Blank!",Toast.LENGTH_LONG).show();    

      }else{ 

      EditText et = (EditText) findViewById(R.id.editText1); 
      String searchTerm = et.getText().toString().trim();   
      Intent in = new Intent(MainActivity.this, ListView.class); 
      in.putExtra("TAG_SEARCH", searchTerm); 
      startActivity(in); 
     } 

     }}); 
    } 

    @Override 
    protected void onStop() { 
     // TODO Auto-generated method stub 
     super.onStop(); 
    } 

}

customdialog.xml：

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:orientation="vertical" > 

    <TextView 
     android:id="@+id/TPS" 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:layout_weight="0.01" 
     android:text="example" 
     android:textAppearance="?android:attr/textAppearanceLarge" /> 

    <TextView 
     android:id="@+id/TPS1" 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:layout_weight="0.02" 
     android:text="example" 
     android:textAppearance="?android:attr/textAppearanceMedium" /> 

    <TextView 
     android:id="@+id/TPS2" 
     android:layout_width="match_parent" 
     android:layout_height="53dp" 
     android:text="example" 
     android:textAppearance="?android:attr/textAppearanceLarge" /> 

    <TextView 
     android:id="@+id/TPS3" 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:layout_weight="0.02" 
     android:text="example" 
     android:textAppearance="?android:attr/textAppearanceMedium" /> 

    <Button 
     android:id="@+id/TPSbutton1" 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:text="OK" /> 

</LinearLayout>

来源

2013-08-23 Bob Last

使用此'最终对话框=新建对话框（此）;'您只使用活动上下文来显示对话框。 – Varun

在findViewById只是小错误（）。

TPS = (TextView) findViewById(R.id.TPS); 
       TPS1 = (TextView) dialog.findViewById(R.id.TPS1); 
       TPS2 = (TextView) dialog.findViewById(R.id.TPS2); 
       TPS3 = (TextView) dialog.findViewById(R.id.TPS3); 
       TPSbutton1 = (Button) dialog.findViewById(R.id.TPSbutton1);

来源

2013-08-23 04:23:42

谢谢......菜鸟的失误 –

Android无法添加窗口错误

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