[Android] AlertDialog對話窗裡面放置元件

一般來說我們使用到AlertDialog頂多是寫個文字或是改改標題

但如果想往AlertDialog裡面擺放其他的元件該怎麼辦呢?

比如說我想讓對話窗裡面顯示一個小星星之類的，如下圖

我們會使用到LayoutInflater，View來加載外部的布局(layout)

示範

XML

首先新增兩個XML檔案

activity_main.xml

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:layout_height="match_parent"
    tools:context=".MainActivity">

    <Button
        android:id="@+id/btn_Click"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:onClick="btn_Click"
        android:text="Dialog"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />
android.support.constraint.ConstraintLayout>

xll.xml

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:layout_height="match_parent"
    tools:context=".MainActivity">


    <ImageView
        android:id="@+id/ig"
        android:layout_width="131dp"
        android:layout_height="148dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:srcCompat="@android:drawable/btn_star_big_on" />
android.support.constraint.ConstraintLayout>

JAVA

public class MainActivity extends AppCompatActivity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }
    public void btn_Click(View v) {
        LayoutInflater layoutInflater = LayoutInflater.from(this);
         View imageEnterView = layoutInflater.inflate(R.layout.xll, null);
         ImageView xll_lv = (ImageView) imageEnterView.findViewById(R.id.ig);
        new AlertDialog.Builder(this)
                .setView(imageEnterView)
                .setTitle("視窗")
                .setPositiveButton("OK", null).show();
    }
}

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