标签：
三种得到LinearInflater的方法
a. LayoutInflater inflater = getLayoutInflater();
b. LayoutInflater localinflater =
(LayoutInflater)context.getSystemService
(Context.LAYOUT_INFLATER_SERVICE);
c. LayoutInflater inflater = LayoutInflater.from(context);
onDraw 方法绘图，invalidate刷新界面。
效果图:
点击一下换颜色
onDraw画完图后,给控件设置点击事件 ,将参数传到控件里,然后invalidate刷新
1.onDraw画图,并增加changeColor方法
- public class CusView3 extends View {
-
- private int color = 0;
-
- public CusView3(Context 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("点击我刷新", 10, 60, mPaint);
- }
-
- public void changeColor() {
- color++;
- }
- }
2.布局
- <?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.画图后 给控件设置点击事件 ,将参数传到控件里,然后invalidate刷新
- public class TestCustomViewActivity extends Activity {
- @Override
- public void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- setContentView(R.layout.main);
- view3 = (CusView3) findViewById(R.id.cusview3);
-
- 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() {
-
- public void handleMessage(Message msg) {
-
- switch (msg.what) {
- case 1:
-
- view3.changeColor();
-
- view3.invalidate();
- break;
- }
- super.handleMessage(msg);
- }
- };
- private CusView3 view3;
-
- }
至于自定义控件占整屏的问题,可能需要用layoutparams
源码下载: http://download.csdn.net/detail/ethan_xue/4152203
android自定义控件(六) 刷新
标签：
原文地址：http://www.cnblogs.com/chengzhengfu/p/4574094.html
