android5.0之Vector Drawables（矢量图）

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android5.0之Vector Drawables（矢量图）

效果图：

这里写图片描述

在res/drawable/目录下创建heart.xml，文件内容：

<?xml version="1.0" encoding="utf-8"?><vector xmlns:android="http://schemas.android.com/apk/res/android"    android:width="256dp"    android:height="256dp"    android:viewportHeight="32"    android:viewportWidth="32">    <path        android:fillColor="#f00"        android:pathData="M20.5,9.5            c-1.955,0,-3.83,1.268,-4.5,3            c-0.67,-1.732,-2.547,-3,-4.5,-3            C8.957,9.5,7,11.432,7,14            c0,3.53,3.793,6.257,9,11.5            c5.207,-5.242,9,-7.97,9,-11.5            C25,11.432,23.043,9.5,20.5,9.5z" /></vector>

pathData有5个参数（为了便于阅读，我在不同的参数之间用空格分割，但是空格并不是必须的，注意逗号不是参数分割符）。第一个参数值是M100,100，表示将当前的绘制点移动到100, 100的位置（大写字母M表示我们使用的是绝对坐标，我们可以使用小写字母m来表示相对坐标，这个规则适用于所有参数）。这将当前的位置定位到了正方形绘制区域的左上角

指定控件使用

<ImageView        android:layout_width="256dp"        android:layout_height="256dp"        android:background="@drawable/heart" />

VectorDrawable动画：

方式一：

效果图：

这里写图片描述
在res/drawable目录下创建一个vector_drawable.xml

<?xml version="1.0" encoding="utf-8"?><vector xmlns:android="http://schemas.android.com/apk/res/android"    android:viewportWidth="500"    android:viewportHeight="500"    android:width="500px"    android:height="500px">    <group android:name="android">        <group android:name="head_eyes">            <path                android:name="head"                android:fillColor="#9FBF3B"                android:pathData="M301.314,83.298l20.159-29.272c1.197-1.74,0.899-4.024-0.666-5.104c-1.563-1.074-3.805-0.543-4.993,1.199L294.863,80.53c-13.807-5.439-29.139-8.47-45.299-8.47c-16.16,0-31.496,3.028-45.302,8.47l-20.948-30.41c-1.201-1.74-3.439-2.273-5.003-1.199c-1.564,1.077-1.861,3.362-0.664,5.104l20.166,29.272c-32.063,14.916-54.548,43.26-57.413,76.34h218.316C355.861,126.557,333.375,98.214,301.314,83.298" />            <path                android:name="left_eye"                android:fillColor="#FFFFFF"                android:pathData="M203.956,129.438c-6.673,0-12.08-5.407-12.08-12.079c0-6.671,5.404-12.08,12.08-12.08c6.668,0,12.073,5.407,12.073,12.08C216.03,124.03,210.624,129.438,203.956,129.438" />            <path                android:name="right_eye"                android:fillColor="#FFFFFF"                android:pathData="M295.161,129.438c-6.668,0-12.074-5.407-12.074-12.079c0-6.673,5.406-12.08,12.074-12.08c6.675,0,12.079,5.409,12.079,12.08C307.24,124.03,301.834,129.438,295.161,129.438" />        </group>        <group android:name="arms">            <path                android:name="left_arm"                android:fillColor="#9FBF3B"                android:pathData="M126.383,297.598c0,13.45-10.904,24.354-24.355,24.354l0,0c-13.45,0-24.354-10.904-24.354-24.354V199.09c0-13.45,10.904-24.354,24.354-24.354l0,0c13.451,0,24.355,10.904,24.355,24.354V297.598z" />            <path                android:name="right_arm"                android:fillColor="#9FBF3B"                android:pathData="M372.734,297.598c0,13.45,10.903,24.354,24.354,24.354l0,0c13.45,0,24.354-10.904,24.354-24.354V199.09c0-13.45-10.904-24.354-24.354-24.354l0,0c-13.451,0-24.354,10.904-24.354,24.354V297.598z" />        </group>        <path            android:name="body"            android:fillColor="#9FBF3B"            android:pathData="M140.396,175.489v177.915c0,10.566,8.566,19.133,19.135,19.133h22.633v54.744c0,13.451,10.903,24.354,24.354,24.354c13.451,0,24.355-10.903,24.355-24.354v-54.744h37.371v54.744c0,13.451,10.902,24.354,24.354,24.354s24.354-10.903,24.354-24.354v-54.744h22.633c10.569,0,19.137-8.562,19.137-19.133V175.489H140.396z" />    </group></vector>

在res/drawable目录下创建vector_animator.xml

<?xml version="1.0" encoding="utf-8"?><animated-vector xmlns:android="http://schemas.android.com/apk/res/android"    android:drawable="@drawable/vector_drawable">    <target        android:name="head_eyes"        android:animation="@animator/shrug" />    <target        android:name="arms"        android:animation="@animator/shrug" /></animated-vector>

在res/aninator目录下创建shrug.xml动画

<?xml version="1.0" encoding="utf-8"?><set xmlns:android="http://schemas.android.com/apk/res/android">    <objectAnimator        android:propertyName="translateY"        android:valueType="floatType"        android:valueFrom="0"        android:valueTo="-10"        android:repeatMode="reverse"        android:repeatCount="infinite"        android:duration="250" /></set>

在控件中使用：

 <ImageView        android:id="@+id/iv"        android:layout_width="256dp"        android:layout_height="256dp"        android:background="@drawable/vector_animtor" />

在java代码中执行动画：

public class MainActivity extends AppCompatActivity {    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        final ImageView imageView = (ImageView) findViewById(R.id.iv);        imageView.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                Drawable drawable = v.getBackground();                if (drawable instanceof Animatable) {                    ((Animatable) drawable).start();                }            }        });    }}

方式二：

效果图：

这里写图片描述
创建另外一个vector_drawable1.xml和vector_animator1.xml。

vector_drawable.xml

<vector xmlns:android="http://schemas.android.com/apk/res/android"    android:height="64dp"    android:width="64dp"    android:viewportHeight="600"    android:viewportWidth="600">    <group        android:name="rotationGroup"        android:pivotX="300.0"        android:pivotY="300.0"        android:rotation="45.0" >        <path            android:name="path"            android:fillColor="#000000"            android:pathData="M300,70 l 0,-70 70,70 0,0 -70,70z" />    </group></vector>

vector_aniator.xml

<?xml version="1.0" encoding="utf-8"?><animated-vector xmlns:android="http://schemas.android.com/apk/res/android"    android:drawable="@drawable/vector_drawable1">    <target        android:name="rotationGroup"        android:animation="@animator/rotation" />    <target        android:name="path"        android:animation="@animator/path" /></animated-vector>

rotation.xml动画和path.xml动画

rotation.xml

<objectAnimator xmlns:android="http://schemas.android.com/apk/res/android"    android:duration="6000"    android:propertyName="rotation"    android:valueFrom="0"    android:valueTo="360" />

path.xml

<set xmlns:android="http://schemas.android.com/apk/res/android">    <objectAnimator        android:duration="3000"        android:propertyName="pathData"        android:valueFrom="M300,70 l 0,-70 70,70 0,0   -70,70z"        android:valueTo="M300,70 l 0,-70 70,0  0,140 -70,0 z"        android:valueType="pathType" /></set>

在控件中使用：

 <ImageView        android:id="@+id/iv"        android:layout_width="256dp"        android:layout_height="256dp"        android:background="@drawable/vector_animtor1" />

在java代码中执行动画：

public class MainActivity extends AppCompatActivity {    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        final ImageView imageView = (ImageView) findViewById(R.id.iv);        imageView.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                Drawable drawable = v.getBackground();                if (drawable instanceof Animatable) {                    ((Animatable) drawable).start();                }            }        });    }}

参考：VectorDrawable-第一二三四章

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