setAntiAlias: 设置画笔的锯齿效果。
setColor: 设置画笔颜色
setARGB: 设置画笔的a,r,p,g值。
setAlpha: 设置Alpha值
setTextSize: 设置字体尺寸。
setStyle: 设置画笔风格,空心或者实心。
setStrokeWidth: 设置空心的边框宽度。
getColor: 得到画笔的颜色
getAlpha: 得到画笔的Alpha值。
下面是一个简单的示例 来说明这些方法的使用。先来看看运行效果吧。
1 package eoe.Demo;
2
3 import android.content.Context;
4 import android.graphics.Canvas;
5 import android.graphics.Color;
6 import android.graphics.Paint;
7 import android.util.Log;
8 import android.view.KeyEvent;
9 import android.view.MotionEvent;
10 import android.view.View;
11
12 public class GameView extends View implements Runnable {
13
14 public final static String TAG = "Example_05_03_GameView";
15 // 声明Paint对象
16 private Paint mPaint = null;
17
18 public GameView(Context context) {
19 super(context);
20 // 构建对象
21 mPaint = new Paint();
22
23 // 开启线程
24 new Thread(this).start();
25 }
26
27 @Override
28 protected void onDraw(Canvas canvas) {
29 super.onDraw(canvas);
30
31 // 设置Paint为无锯齿
32 mPaint.setAntiAlias(true);
33
34 // 设置Paint的颜色
35 mPaint.setColor(Color.RED);
36 mPaint.setColor(Color.BLUE);
37 mPaint.setColor(Color.YELLOW);
38 mPaint.setColor(Color.GREEN);
39 // 同样是设置颜色
40 mPaint.setColor(Color.rgb(255, 0, 0));
41
42 // 提取颜色
43 Color.red(0xcccccc);
44 Color.green(0xcccccc);
45
46 // 设置paint的颜色和Alpha值(a,r,g,b)
47 mPaint.setAlpha(220);
48
49 // 这里可以设置为另外一个paint对象
50 // mPaint.set(new Paint());
51 // 设置字体的尺寸
52 mPaint.setTextSize(14);
53
54 // 设置paint的风格为“空心”
55 // 当然也可以设置为"实心"(Paint.Style.FILL)
56 mPaint.setStyle(Paint.Style.STROKE);
57
58 // 设置“空心”的外框的宽度
59 mPaint.setStrokeWidth(5);
60
61 // 得到Paint的一些属性 颜色、Alpha值、外框的宽度、字体尺寸
62 Log.i("TAG", "paint Color------>" + mPaint.getColor());
63 Log.i(TAG, "paint Alpha------->" + mPaint.getAlpha());
64 Log.i("TAG", "paint StrokeWidth--------->" + mPaint.getStrokeWidth());
65 Log.i("TAG", "paint TextSize----------->" + mPaint.getTextSize());
66
67 // 绘制一空心个矩形
68 canvas.drawRect((320 - 80), 20, (320 - 80) / 2 + 80, 20 + 40, mPaint);
69
70 // 设置风格为实心
71 mPaint.setStyle(Paint.Style.FILL);
72
73 mPaint.setColor(Color.GREEN);
74
75 // 绘制绿色实心矩形
76 canvas.drawRect(0, 20, 40, 20 + 40, mPaint);
77 }
78
79 // 触笔事件
80 public boolean onTouchEvent(MotionEvent event) {
81 return true;
82 }
83
84 // 按键按下事件
85 public boolean onKeyDown(int keyCode, KeyEvent event) {
86 return true;
87 }
88
89 // 按键弹起事件
90 public boolean onKeyUp(int keyCode, KeyEvent event) {
91 return true;
92 }
93
94 public boolean onKeyMultiple(int KeyCode, int repeatCount, KeyEvent event) {
95 return true;
96 }
97
98 @Override
99 public void run() {
100 while (!Thread.currentThread().isInterrupted()) {
101 try {
102 Thread.sleep(100);
103 } catch (Exception e) {
104 Thread.currentThread().interrupt();
105 }
106 // 更新界面
107 postInvalidate();
108 }
109 }
110 }
111
112
113 package eoe.Demo;
114
115 import android.app.Activity;
116 import android.os.Bundle;
117
118 public class Activity01 extends Activity {
119
120 private GameView mGameView;
121
122 @Override
123 public void onCreate(Bundle savedInstanceState) {
124 super.onCreate(savedInstanceState);
125
126 setContentView(R.layout.main);
127
128 mGameView = new GameView(this);
129
130 setContentView(mGameView);
131 }
132 }
abc20899.iteye.com/blog/1032802
标签:mPaint,Color,Paint,import,Android,public,android From: https://blog.51cto.com/u_548275/6237902