問題描述

我在對話框的自定義布局中有一個 TextView.對話框即將出現時，必須更改其文本.

I have a TextView in a custom layout for dialog. Its text has to be changed when the dialog is about to appear.

      <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/final_score"
        />

我用來設置文本和顯示對話框的java代碼是

java code I used to set text and show dialog is

AlertDialog.Builder builder = new AlertDialog.Builder(this);
    LayoutInflater inflater = this.getLayoutInflater();
    builder.setView(inflater.inflate(R.layout.its_over, null));
    AlertDialog dialog = builder.create();
    dialog.show();
    TextView t = (TextView)findViewById(R.id.final_score);
    t.setText(""+score);

我也試過這個代碼.

 AlertDialog.Builder builder = new AlertDialog.Builder(this);
    LayoutInflater inflater = this.getLayoutInflater();
    builder.setView(inflater.inflate(R.layout.its_over, null));
    AlertDialog dialog = builder.create();
    TextView t = (TextView)dialog.findViewById(R.id.final_score);
    t.setText(""+score);
    dialog.show();

但調用這些方法時應用會崩潰.

but the app would crash when these method is called.

但如果我們刪除

TextView t = (TextView)dialog.findViewById(R.id.final_score);
    t.setText(""+score);

它不會崩潰.

推薦答案

嘗試通過它的父引用訪問TextView

Try to access the TextView by it's parent referance

View view = inflater.inflate(R.layout.its_over, null);
builder.setView(view);
TextView t = (TextView) view.findViewById(R.id.final_score);

這篇關于如何使用 setText() 在自定義布局對話框中編輯文本的文章就介紹到這了，希望我們推薦的答案對大家有所幫助，也希望大家多多支持html5模板網！