The Android custom view control implements the refresh effect _android

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.

Effect Chart:

Click to change color

OnDraw finish drawing, set click event for control, pass parameter to control, then invalidate refresh

1.onDraw drawing and adding ChangeColor method

public class CusView3 extends View { 
private int color = 0; 
Public CusView3 (context, AttributeSet attrs) { 
Super (context, attrs); 
} 
@Override 
protected void OnDraw (Canvas Canvas) { 
super.ondraw (Canvas); 
Paint mpaint = new Paint (); 
if (Color > 2) { 
color = 0; 
} 
switch (color) {case 
0: 
mpaint.setcolor (color.green); 
break; 
Case 1: 
mpaint.setcolor (color.red); 
break; 
Case 2: 
mpaint.setcolor (color.blue); 
break; 
Default: Break 
; 
} 
Mpaint.setstyle (Style.fill); 
Mpaint.settextsize (35.0f); 
Canvas.drawtext ("Click Me Refresh", "n", Mpaint); 
} 
public void ChangeColor () {//To allow outside calls to 
color++ 
} 
}

2. Layout

<?xml version= "1.0" encoding= "Utf-8"?> <linearlayout xmlns:android= 
"http://schemas.android.com/apk/" Res/android " 
android:orientation=" vertical " 
android:layout_width=" fill_parent " 
android:layout_" height= "Fill_parent" 
> 
<xue.test.cusview3 
android:id= "@+id/cusview3" 
android:layout_ Width= "Wrap_content" 
android:layout_height= "wrap_content" 
> 
</xue.test.CusView3> 
</LinearLayout>

3. Set the Click event for the control after drawing, pass the parameter to the control, then invalidate refresh

public class Testcustomviewactivity extends activity { 
@Override public 
void OnCreate (Bundle Savedinstancestate) { 
super.oncreate (savedinstancestate); 
Setcontentview (r.layout.main); 
VIEW3 = (CUSVIEW3) Findviewbyid (R.ID.CUSVIEW3); 
Click event 
View3.setonclicklistener (new View.onclicklistener () { 
@Override public 
void OnClick (View v) { Message Message 
= new Message (); 
Message.what = 1; 
Myhandler.sendmessage (message); 
} 
); 
Handler MyHandler = new Handler () { 
//to handle public 
void Handlemessage (msg) { 
switch (msg.what) after receiving a message {Case 
1: 
//Call Method 
View3.changecolor (); 
Refresh Method 
view3.invalidate (); 
break; 
Super.handlemessage (msg); 
} 
; 
Private CusView3 view3; 
}

As for the custom control to occupy the whole screen problem, may need to use the Layoutparams

The above is a small set to introduce the Android Custom view control to achieve the refresh effect, I hope to help you, if you have any questions welcome to my message, small series will promptly reply to everyone!