Android创建意图内部对话框自定义视图

我创建了一个使用自定义XML视图的对话框现在我有一些按钮，我想添加点击侦听器并使用它们启动新的活动。但每次我尝试创建一个意图，它会崩溃我的应用程序。Android创建意图内部对话框自定义视图

  Dialog dialog = new Dialog(MainActivity.this); 
    dialog.setContentView(R.layout.activity_dialog_tips); 
    RelativeLayout AldikoLauncher; 
    AldikoLauncher = (RelativeLayout) findViewById(R.id.launch_aldiko_tour); 

     AldikoLauncher.setOnClickListener(new View.OnClickListener() { 

      @Override 
      public void onClick(View arg0) { 
       // TODO Auto-generated method stub 
       pref.setGuidedActivity("MainActivity"); 
       Intent ShowCase1 = new Intent(MainActivity.this,ShowCaseStep1.class); 
       ShowCase1.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); 
       overridePendingTransition(R.anim.fadeout, R.anim.fadein); 
       startActivity(ShowCase1); 
      } 
     }); 
    dialog.setTitle("Quick Tips"); 
    dialog.setCancelable(true); 
    dialog.show();

错误报告

   02-11 06:44:04.355: E/AndroidRuntime(2202): FATAL EXCEPTION: main 
      02-11 06:44:04.355: E/AndroidRuntime(2202): java.lang.NullPointerException 
      02-11 06:44:04.355: E/AndroidRuntime(2202):  at com.utext.unext.MainActivity.InvokeTipsLauncher(MainActivity.java:91) 
      02-11 06:44:04.355: E/AndroidRuntime(2202):  at com.utext.unext.MainActivity.onOptionsItemSelected(MainActivity.java:80) 
      02-11 06:44:04.355: E/AndroidRuntime(2202):  at android.app.Activity.onMenuItemSelected(Activity.java:2548) 
      02-11 06:44:04.355: E/AndroidRuntime(2202):  at com.android.internal.policy.impl.PhoneWindow.onMenuItemSelected(PhoneWindow.java:980) 
      02-11 06:44:04.355: E/AndroidRuntime(2202):  at com.android.internal.view.menu.MenuBuilder.dispatchMenuItemSelected(MenuBuilder.java:735) 
      02-11 06:44:04.355: E/AndroidRuntime(2202):  at com.android.internal.view.menu.MenuItemImpl.invoke(MenuItemImpl.java:149) 
      02-11 06:44:04.355: E/AndroidRuntime(2202):  at com.android.internal.view.menu.MenuBuilder.performItemAction(MenuBuilder.java:874) 
      02-11 06:44:04.355: E/AndroidRuntime(2202):  at com.android.internal.view.menu.ActionMenuView.invokeItem(ActionMenuView.java:547) 
      02-11 06:44:04.355: E/AndroidRuntime(2202):  at com.android.internal.view.menu.ActionMenuItemView.onClick(ActionMenuItemView.java:115) 
      02-11 06:44:04.355: E/AndroidRuntime(2202):  at android.view.View.performClick(View.java:4202) 
      02-11 06:44:04.355: E/AndroidRuntime(2202):  at android.view.View$PerformClick.run(View.java:17340) 
      02-11 06:44:04.355: E/AndroidRuntime(2202):  at android.os.Handler.handleCallback(Handler.java:725) 
      02-11 06:44:04.355: E/AndroidRuntime(2202):  at android.os.Handler.dispatchMessage(Handler.java:92) 
      02-11 06:44:04.355: E/AndroidRuntime(2202):  at android.os.Looper.loop(Looper.java:137) 
      02-11 06:44:04.355: E/AndroidRuntime(2202):  at android.app.ActivityThread.main(ActivityThread.java:5039) 
      02-11 06:44:04.355: E/AndroidRuntime(2202):  at java.lang.reflect.Method.invokeNative(Native Method) 
      02-11 06:44:04.355: E/AndroidRuntime(2202):  at java.lang.reflect.Method.invoke(Method.java:511) 
      02-11 06:44:04.355: E/AndroidRuntime(2202):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793) 
      02-11 06:44:04.355: E/AndroidRuntime(2202):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560) 
      02-11 06:44:04.355: E/AndroidRuntime(2202):  at dalvik.system.NativeStart.main(Native Method)

来源

2013-02-11 Aman Virk

它的其他东西是null，这个NPE不是在意图创建。 – AAnkit 2013-02-11 06:48:19

变化

AldikoLauncher = (RelativeLayout) findViewById(R.id.launch_aldiko_tour);

到

AldikoLauncher = (RelativeLayout)dialog.findViewById(R.id.launch_aldiko_tour);

因为访问从对话框布局UI元素，你将需要使用dialog

来源

2013-02-11 06:48:35

像一个魅力工作谢谢， – 2013-02-11 06:50:02

你应该接受这个答案。 – dnkoutso 2013-02-11 06:54:04

Android创建意图内部对话框自定义视图

回答

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