今日學習imageview imagebutton
有關於圖片的顯示 和用圖像來當按鈕

imageview的用法

<LinearLayout 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:id="@+id/main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".ImageScaleActivity"
    android:orientation="vertical">

    <ImageView
        android:id="@+id/iv_scale1"
        android:layout_width="match_parent"
        android:layout_height="220dp"
        android:layout_marginTop="5dp"
        android:src="@drawable/test"
        android:scaleType="centerInside">
    </ImageView>

    <ImageView
        android:id="@+id/iv_scale2"
        android:layout_width="match_parent"
        android:layout_height="220dp"
        android:layout_marginTop="5dp">
    </ImageView>

</LinearLayout>

imagebutton的用法

<LinearLayout 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:id="@+id/main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".ImageButtonActivity"
    android:orientation="vertical">

    <ImageButton
        android:layout_width="match_parent"
        android:layout_height="80dp"
        android:src="@drawable/test"
        android:scaleType="fitCenter"/>

</LinearLayout>

image元件的scale

<LinearLayout 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:id="@+id/main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".ImageScaleActivity"
    android:orientation="vertical">

    <ImageView
        android:id="@+id/iv_scale1"
        android:layout_width="match_parent"
        android:layout_height="220dp"
        android:layout_marginTop="5dp"
        android:src="@drawable/test"
        android:scaleType="centerInside">
    </ImageView>

    <ImageView
        android:id="@+id/iv_scale2"
        android:layout_width="match_parent"
        android:layout_height="220dp"
        android:layout_marginTop="5dp">
    </ImageView>

</LinearLayout>

今天的內容就比較簡單了
昨天學習java的部分比較複雜