Android custom Controls (vi) Refresh

Three ways to get Linearinflater

A. Layoutinflater Inflater = Getlayoutinflater ();

B. layoutinflater Localinflater =
(Layoutinflater) Context.getsystemservice
(Context.layout_inflater_service);

C. layoutinflater Inflater = layoutinflater.from (context);

OnDraw method drawing, Invalidate refresh interface.

:

Click to change color

OnDraw after drawing, set the Click event to the control, upload the parameters to the control, and invalidate refresh

1.onDraw drawing, and adding ChangeColor methods

[Java]View Plaincopy

2. Public class CUSVIEW3 extends View {
6. private int color = 0;
10. Public CUSVIEW3 (context context, AttributeSet attrs) {
12. Super (context, attrs);
14. }
18. @Override
20. protected void OnDraw (canvas canvas) {
22. Super.ondraw (canvas);
24. Paint Mpaint = new Paint ();
26. if (Color > 2) {
28. color = 0;
30. }
32. switch (color) {
34. Case 0:
36. Mpaint.setcolor (Color.green);
38. Break ;
40. case 1:
42. Mpaint.setcolor (color.red);
44. Break ;
46. Case 2:
48. Mpaint.setcolor (Color.Blue);
50. Break ;
54. Default:
56. Break ;
58. }
60. Mpaint.setstyle (Style.fill);
62. Mpaint.settextsize (35.0f);
64. Canvas.drawtext ("Click Me Refresh", ten, mpaint);
66. }
70. public void ChangeColor () { //In order to let the outside call
72. color++;
74. }
76. }

2. Layout

[HTML]View Plaincopy

2. <? XML version= "1.0" encoding="Utf-8"?>
4. <linearlayout xmlns:android="http://schemas.android.com/apk/res/android"
6. android:orientation="vertical"
8. android:layout_width="fill_parent"
10. android:layout_height="fill_parent"
12. >
14. <xue.test.CusView3
16. android:id="@+id/cusview3"
18. android:layout_width="wrap_content"
20. android:layout_height="wrap_content"
22. >
24. </xue.test.CusView3>
26. </linearlayout>

3. After drawing, set the Click event to the control, upload the parameters to the control, then invalidate refresh

[Java]View Plaincopy

2. Public class Testcustomviewactivity extends Activity {
4. @Override
6. public void OnCreate (Bundle savedinstancestate) {
8. super.oncreate (savedinstancestate);
10. Setcontentview (R.layout.main);
12. VIEW3 = (CUSVIEW3) Findviewbyid (R.ID.CUSVIEW3);
14. //Click events
16. View3.setonclicklistener (new View.onclicklistener () {
20. @Override
22. public void OnClick (View v) {
24. Message message = new Message ();
26. Message.what = 1;
28. Myhandler.sendmessage (message);
30. }
32. });
34. }
38. Handler MyHandler = new Handler () {
40. //Receive message after processing
42. public void Handlemessage (Message msg) {
46. switch (msg.what) {
48. case 1:
50. //Call method
52. View3.changecolor ();
54. //Refresh method
56. View3.invalidate ();
58. Break ;
60. }
62. super.handlemessage (msg);
64. }
66. };
68. private CUSVIEW3 view3;
72. }

As for the problem with custom controls taking up the entire screen, you may need to use Layoutparams

SOURCE Download: http://download.csdn.net/detail/ethan_xue/4152203

Android custom Controls (vi) Refresh