无法以编程方式更改android布局文件元素的值

Question

我的Android项目中有一个Java类，用于创建自定义对话框。 但是，当我想为自定义对话框布局文件设置文本或其他属性时，我做不到！

当我使用setText更改活动或自定义对话框java类中的对话框布局的textView时，不会发生任何更改。

这是我的自定义对话框布局文件

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:background="@color/dark_primary"
android:layout_height="match_parent">

<TextView
    android:id="@+id/textView"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_marginLeft="24dp"
    android:layout_marginStart="24dp"
    android:layout_marginTop="8dp"
    android:text="@string/alert"
    android:textSize="@dimen/alert_title_font_size"
    android:textColor="@android:color/white"
    android:fontFamily="@font/berlin_regular"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toTopOf="parent" />
</android.support.constraint.ConstraintLayout>

这是我的对话框生成器Java类：

package com.x.Dialog;

import android.app.Activity;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.TextView;

import com.orhanobut.dialogplus.DialogPlus;
import com.orhanobut.dialogplus.OnItemClickListener;
import com.orhanobut.dialogplus.ViewHolder;
import com.x.x.R;

public class CustomAlertDialog {

public Context context;
public Activity activity;
public TextView textView;

public CustomAlertDialog(Context context, Activity activity, ViewHolder viewHolder){

    this.context = context;
    this.activity = activity;
    View dialogView = LayoutInflater.from(context).inflate(R.layout.alert_dialog_1, null);
    textView = dialogView.findViewById(R.id.textView);
    textView.setText("Test");
    DialogPlus dialog = DialogPlus.newDialog(this.context)
            .setContentHolder(viewHolder)
            .setOnItemClickListener(new OnItemClickListener() {
                @Override
                public void onItemClick(DialogPlus dialog, Object item, View view, int position) {
                }
            })
            .setExpanded(true)  // This will enable the expand feature, (similar to android L share dialog)
            .create();
    dialog.show();
}
}

在上面的代码中， textView.setText("Test"); 不起作用： 不会更改字段内容。 我在xml（@ string / alert）中设置的默认文本仍然显示！

Answer 1

好的，所以看着您正在使用的库，我发现了这个.setContentHolder(new ViewHolder(view))

所以从

DialogPlus dialog = DialogPlus.newDialog(this.context)
        .setContentHolder(viewHolder)
        .setOnItemClickListener(new OnItemClickListener() {
            @Override
            public void onItemClick(DialogPlus dialog, Object item, View view, int position) {
            }
        })
        .setExpanded(true)  // This will enable the expand feature, (similar to android L share dialog)
        .create();

至

  DialogPlus dialog = DialogPlus.newDialog(this.context)
        .setContentHolder(new ViewHolder(dialogView ))
        .setOnItemClickListener(new OnItemClickListener() {
            @Override
            public void onItemClick(DialogPlus dialog, Object item, View view, int position) {
            }
        })
        .setExpanded(true)  // This will enable the expand feature, (similar to android L share dialog)
        .create();