1. Open flash;
2. Press CTRL+M, set animation size for 400x100, background black;
3. Press F8 key to establish a graphic attribute of the symbol, with the type tool, select Impact Font, 64 size, white, enter "this is FLASH";
4. Press F8 key to create a graphic attribute symbol, with pencil tool to draw a circle of about 80 diameter, with paint bucket tool Tim Black and white fade;
5. Press the return button to return to the scene; (note: The above operation is briefly explained, do not understand, please see the previous tutorials)
6. Press Ctrl+l to pull out symbol library;
7. Select the symbol 1 "This is Flsh" (symbol 1) and drag it into the scene;
8. Click the button below the small pencil button next to the layer 1 with the mouse, select Insert layer into a new layer in the Pull-down menu;
9. Select the symbol 2 "circle" (symbol 2), drag it to the scene, and move to the scene's left (note that Layer 1 can be locked to prevent layer 1 from moving);
10. Press F6 key at the 15th and 30 shades of Layer 2 to copy a keyframe; (3lian material)
11. Click the Blue dot of the 15th shadow with the mouse to move the "circle" to the right end of the scene;
12. Double-click the Blue Origin of the 1th shadow of Layer 2, select the motion attribute in tweening, and create a moving circle animation;
13. Similarly, double-click the Blue Origin of the 15th shadow of Layer 2 to select the motion attribute in the tweening;
14. Lock the Layer 2, click the 30th Shadow of Layer 1 (layer 1) with the mouse, press F5 to insert a frame; (www.3lian.com)
15. The following step is the key to achieve this effect: with the mouse click Layer 1 next to the small lock button, in the Drop-down menu to select Mask, when the layer name will appear before the symbol, the timeline display;
16. Work completed. Press Ctrl+enter to see the effect.