三種得到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 方法繪圖，invalidate刷新界面。
效果圖:
點擊一下?lián)Q顏色
onDraw畫完圖后,給控件設置點擊事件 ,將參數(shù)傳到控件里,然后invalidate刷新
1.onDraw畫圖,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("點擊我刷新", 10, 60, mPaint); } public void changeColor() { //為了讓外面調(diào)用 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.畫圖后 給控件設置點擊事件 ,將參數(shù)傳到控件里,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); // 點擊事件 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() { // 接收到消息后處理 public void handleMessage(Message msg) { switch (msg.what) { case 1: // 調(diào)用方法 view3.changeColor(); // 刷新方法 view3.invalidate(); break; } super.handleMessage(msg); } }; private CusView3 view3; }至于自定義控件占整屏的問題,可能需要用layoutparams
以上所述是小編給大家介紹的Android自定義View控件實現(xiàn)刷新效果，希望對大家有所幫助，如果大家有任何疑問歡迎給我留言，小編會及時回復大家的！
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