Android showDialog時報錯requestFeature() must be called before adding content

01-08 10:06:54.670: E/AndroidRuntime(1968): android.util.AndroidRuntimeException: requestFeature() must be called before adding content
01-08 10:06:54.670: E/AndroidRuntime(1968): at com.android.internal.policy.impl.PhoneWindow.requestFeature(PhoneWindow.java:192)
01-08 10:06:54.670: E/AndroidRuntime(1968): at com.android.internal.app.AlertController.installContent(AlertController.java:234)
01-08 10:06:54.670: E/AndroidRuntime(1968): at android.app.AlertDialog.onCreate(AlertDialog.java:314)
01-08 10:06:54.670: E/AndroidRuntime(1968): at android.app.Dialog.dispatchOnCreate(Dialog.java:335)
01-08 10:06:54.670: E/AndroidRuntime(1968): at android.app.Dialog.show(Dialog.java:248)
01-08 10:06:54.670: E/AndroidRuntime(1968): at com.android.test.showDialog(MainActivity.java:121)

 

出現此問題是由於dialog.show()之前調用了dialog.setContentView()或者dialog.getwindow()等，正確的應該是dialog.show()之後調用dialog.setContentView()