AnimatedPathView
An animated path view following the methods in a blog post from Romain Guy here:
http://www.curious-creature.org/2013/12/21/android-recipe-4-path-tracing/
Per the blog post, I will be adding SVG support soon.
Usage
You can set the path by calling:
animatedPathView.setPath(Path p);
And you can set the percentage (0.0f to 1.0f) of the path being shown by calling:
animatedPathView.setPercentage(float f);
You can also set the resize the path you created by calling:
animatedPathView.scalePathBy(float x, float y);
FYI: As of right now, WRAP_CONTENT is disabled in order set paths relative to view with view.getWidth() and such.
I will be fixing this in the future. So layout_width and layout_height must be specified!
Example: This will create a path that will draw a border around the top half of the screen and an X through the middle of it.
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res/com.mattkula.animatedpathview.sample"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<com.mattkula.animatedpathview.library.AnimatedPathView
android:id="@+id/animated_path"
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_weight="1"
app:strokeColor="@android:color/holo_red_light"
app:strokeWidth="10"/>
<TextView
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:text="Press top half of screen"/>
</LinearLayout>final AnimatedPathView view = (AnimatedPathView)findViewById(R.id.animated_path);
view.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
@Override
public void onGlobalLayout() {
view.getViewTreeObserver().removeGlobalOnLayoutListener(this);
Path p = new Path();
p.moveTo(0, 0);
p.lineTo(view.getWidth(), 0);
p.lineTo(view.getWidth(), view.getHeight());
p.lineTo(0, view.getHeight());
p.lineTo(0, 0);
p.lineTo(view.getWidth(), view.getHeight());
p.lineTo(view.getWidth(), 0);
p.lineTo(0, view.getHeight());
view.setPath(p);
}
}
);
view.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
ObjectAnimator anim = ObjectAnimator.ofFloat(view, "percentage", 0.0f, 1.0f);
anim.setDuration(2000);
anim.setInterpolator(new LinearInterpolator());
anim.start();
}
}
);
If you just want to use straight lines, you can use an array of points to specify your path such as:
float[][] points = new float[][]{
{
0, 0
}
,
{
view.getWidth(), 0
}
,
{
view.getWidth(), view.getHeight()
}
,
{
0, view.getHeight()
}
,
{
0, 0
}
,
{
view.getWidth(), view.getHeight()
}
,
{
view.getWidth(), 0
}
,
{
0, view.getHeight()
}
}
; view.setPath(points);