PathView实现炫酷SVG动画

解析SVG,需要将一个androidsvg.jar包含进libs

https://github.com/geftimov/android-pathview

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:background="#ff0000"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent">
 
    <com.example.kaiyicky.myapplication.PathView
        xmlns:app="http://schemas.android.com/apk/res-auto"
        android:id="@+id/pathView"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:pathColor="@android:color/white"
        app:svg="@raw/ironman_white"
        app:pathWidth="5"/>
</LinearLayout>

app:svg指定了一个SVG文件，我们可以把这个文章放在raw目录下面

public class MainActivity extends FragmentActivity {
     
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
 
        final PathView pathView = (PathView) findViewById(R.id.pathView);
//        final Path path = makeConvexArrow(50, 100);
//        pathView.setPath(path);
        pathView.setFillAfter(true);
        pathView.useNaturalColors();
        pathView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                pathView.getPathAnimator().
                        delay(100).
                        duration(1500).
                        interpolator(new AccelerateDecelerateInterpolator()).
                        start();
            }
        });
    }
 
    private Path makeConvexArrow(float length, float height) {
        final Path path = new Path();
        path.moveTo(0.0f, 0.0f);
        path.lineTo(length / 4f, 0.0f);
        path.lineTo(length, height / 2.0f);
        path.lineTo(length / 4f, height);
        path.lineTo(0.0f, height);
        path.lineTo(length * 3f / 4f, height / 2f);
        path.lineTo(0.0f, 0.0f);
        path.close();
        return path;
    }
 
}

看到注释的部分，调用了makeConvexArraw()方法，如果我们没有在xml文件里面指定svg文件，我们也可以在代码中手动指定绘制的路径

至于这么制作SVG文件，大家可以找美工帮忙，使用ps和ai,可以将图片转换成SVG
http://www.jcodecraeer.com/a/anzhuokaifa/androidkaifa/2015/0825/3362.html