对话框的问题：requestFeature（）必须在添加内容之前调用 [英] Dialog problem: requestFeature() must be called before adding content

问题描述

我创建包含一个EditText一个自定义对话框，这样我可以从用户那里获取文本数据：

I'm creating a custom dialog containing an EditText so that I can get text data from the user:

final EditText newKey = (EditText) findViewById(R.id.dialog_result);
AlertDialog.Builder keyBuilder = new AlertDialog.Builder(StegDroid.this);
keyBuilder
.setCancelable(false)
.setPositiveButton("Try Again", new DialogInterface.OnClickListener() {
    public void onClick(DialogInterface dialog, int id) {
        Log.v("Dialog","New Key: "+newKey.getText().toString());
    }
})
.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
       public void onClick(DialogInterface dialog, int id) {
            dialog.cancel();
       }
   });
AlertDialog dialog = keyBuilder.create();
dialog.setTitle("Decryption Failed");
dialog.setContentView(R.layout.decrypt_failed_dialog);
dialog.show();

不过，我总是得到此异常：

However I always get this exception:

01-11 18:49:00.507: ERROR/AndroidRuntime(3461): android.util.AndroidRuntimeException: requestFeature() must be called before adding content
01-11 18:49:00.507: ERROR/AndroidRuntime(3461):     at com.android.internal.policy.impl.PhoneWindow.requestFeature(PhoneWindow.java:181)
01-11 18:49:00.507: ERROR/AndroidRuntime(3461):     at com.android.internal.app.AlertController.installContent(AlertController.java:199)
01-11 18:49:00.507: ERROR/AndroidRuntime(3461):     at android.app.AlertDialog.onCreate(AlertDialog.java:251)

...

在 dialog.show线（）。我应该怎样做才能摆脱呢？

at the line of dialog.show(). What should I be doing to get rid of this?

推荐答案

您需要在创建对话框之前要设置自定义视图。你也需要使用的setView（查看）而不是的setContentView（）如果您使用的是默认的正面和负面的按钮通过为您提供的 AlertDialog 。

You need to set the custom view before creating the dialog. Also you need to use setView(View) instead of setContentView() if you are using the default positive and negative buttons provided for you by the AlertDialog.

final EditText newKey = (EditText) findViewById(R.id.dialog_result);
AlertDialog.Builder keyBuilder = new AlertDialog.Builder(StegDroid.this);
keyBuilder
.setCancelable(false)
.setPositiveButton("Try Again", new DialogInterface.OnClickListener() {
    public void onClick(DialogInterface dialog, int id) {
        Log.v("Dialog","New Key: "+newKey.getText().toString());
    }
})
.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
       public void onClick(DialogInterface dialog, int id) {
            dialog.cancel();
       }
   });
keyBuilder.setTitle("Decryption Failed");
keyBuilder.setView(getLayoutInflater().inflate(R.layout.decrypt_failed_dialog, null));
AlertDialog dialog = keyBuilder.create();
dialog.show();

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