android - 如何在 Android 的谷歌地图上显示波纹动画？

Question

我正在尝试使用特定的 Lat-Lng 在 google map 上设置涟漪动画，请参阅 this这正是我想要的，我引用了上面的链接，但无法在 google map 上设置动画。

到目前为止我尝试的是-

我的 xml 代码:

<com.test.custom.RippleBackground
        xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:app="http://schemas.android.com/apk/res-auto"
        android:id="@+id/rippleLayout"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:visibility="gone"
        app:rb_color="#0099CC"
        app:rb_duration="5000"        
        app:rb_radius="32dp"
        app:rb_rippleAmount="4"
        app:rb_scale="6" >

        <ImageView
            android:id="@+id/imgMapProfile"
            android:layout_width="64dp"
            android:layout_height="64dp"
            android:layout_centerInParent="true"
            android:src="@drawable/ic_profile_active" />
    </com.test.custom.RippleBackground>

我在谷歌地图上放置波纹的 Java 代码:

 LatLng currentAddressLatLong;              
                        currentAddressLatLong = new LatLng(gps.getLatitude(), gps.getLongitude());

                    RippleBackground rippleLayout=(RippleBackground)findViewById(R.id.rippleLayout);
                    rippleLayout.setVisibility(View.VISIBLE);
                    ImageView imgMapProfile=(ImageView)findViewById(R.id.imgMapProfile);

                    Bitmap markerUserBitmap = Comman.createDrawableFromView(NearByActivity.this, rippleLayout);
                    googleMap.addMarker(new MarkerOptions().position(currentAddressLatLong).icon(BitmapDescriptorFactory.fromBitmap(markerUserBitmap)));
                    googleMap.moveCamera(CameraUpdateFactory.newLatLng(currentAddressLatLong));
                    googleMap.animateCamera(CameraUpdateFactory.zoomTo(11));

                    rippleLayout.startRippleAnimation();

     // Convert a view to bitmap function
            public static Bitmap createDrawableFromView(Context context, View view) 
            {
                DisplayMetrics displayMetrics = new DisplayMetrics();
                ((Activity)context).getWindowManager().getDefaultDisplay().getMetrics(displayMetrics);
                view.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
                view.measure(displayMetrics.widthPixels, displayMetrics.heightPixels);
                view.layout(0, 0, displayMetrics.widthPixels, displayMetrics.heightPixels);
                view.buildDrawingCache();
                Bitmap bitmap = Bitmap.createBitmap(view.getMeasuredWidth(), view.getMeasuredHeight(), Bitmap.Config.ARGB_8888);

                Canvas canvas = new Canvas(bitmap);
                view.draw(canvas);

                return bitmap;
            }

但是位图没有动画。请帮忙。非常感谢。

Answer 1

对于想要像这样在谷歌地图中创建波纹背景的每个人

1. 创建 3 个具有相同圆圈的 GroundOverlay。将图片放入drawable文件夹
2. 创造值(value)动画师
3. 定期在 ValueAnimator 中发送 3 个 GroundOverlay 下面的代码: 在 onCreateView 内部

 new Handler().postDelayed(new Runnable() {
                   @Override public void run() {final GroundOverlay groundOverlay11=googleMap.addGroundOverlay(new
        GroundOverlayOptions()
                           .position(latLng, 2000)
                           .transparency(0.5f)
                           .image(BitmapDescriptorFactory.fromResource(R.drawable.krug)));
                    OverLay(groundOverlay11);
                   }
                  }, 0);

    new Handler().postDelayed(new Runnable() {
       @Override
       public void run() {
        final GroundOverlay groundOverlay1=googleMap.addGroundOverlay(new GroundOverlayOptions()
                .position(latLng, 2000)
                .transparency(0.5f)
                .image(BitmapDescriptorFactory.fromResource(R.drawable.krug)));
        OverLay(groundOverlay1);
       }
      }, 4000);

    new Handler().postDelayed(new Runnable() {
       @Override
       public void run() {
        final GroundOverlay groundOverlay2=googleMap.addGroundOverlay(new GroundOverlayOptions()
                .position(latLng, 2000)
                .transparency(0.5f)
                .image(BitmapDescriptorFactory.fromResource(R.drawable.krug)));
        OverLay(groundOverlay2);
       }
      }, 8000);

和覆盖类:

public void OverLay(final GroundOverlay groundOverlay){
  vAnimator = ValueAnimator.ofInt(0, 2000);
  int r=99999;
  vAnimator.setRepeatCount(r);
  //vAnimator.setIntValues(0, 500);
  vAnimator.setDuration(12000);
  vAnimator.setEvaluator(new IntEvaluator());
  vAnimator.setInterpolator(new LinearInterpolator());
  vAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
   @Override
   public void onAnimationUpdate(ValueAnimator valueAnimator) {
    float animatedFraction = valueAnimator.getAnimatedFraction();
    Integer i = (Integer) valueAnimator.getAnimatedValue();
    groundOverlay.setDimensions(i);
   }
  });
  vAnimator.start();
 }