android 里用shape畫(huà)圓，怎么填充顏色

?xml version="1.0" encoding="utf-8"?

創(chuàng)新互聯(lián)建站自2013年創(chuàng)立以來(lái)，是專業(yè)互聯(lián)網(wǎng)技術(shù)服務(wù)公司，擁有項(xiàng)目網(wǎng)站設(shè)計(jì)、網(wǎng)站建設(shè)網(wǎng)站策劃，項(xiàng)目實(shí)施與項(xiàng)目整合能力。我們以讓每一個(gè)夢(mèng)想脫穎而出為使命，1280元泊頭做網(wǎng)站,已為上家服務(wù),為泊頭各地企業(yè)和個(gè)人服務(wù),聯(lián)系電話:13518219792

shape xmlns:android=""

!-- 圓角 --

corners

android:radius="9dp"

android:topLeftRadius="2dp"

android:topRightRadius="2dp"

android:bottomLeftRadius="2dp"

android:bottomRightRadius="2dp"/!-- 設(shè)置圓角半徑 --

!-- 漸變 --

gradient

android:startColor="@android:color/white"

android:centerColor="@android:color/black"

android:endColor="@android:color/black"

android:useLevel="true"

android:angle="45"

android:type="radial"

android:centerX="0"

android:centerY="0"

android:gradientRadius="90"/

!-- 間隔 --

padding

android:left="2dp"

android:top="2dp"

android:right="2dp"

android:bottom="2dp"/!-- 各方向的間隔 --

!-- 大小 --

size

android:width="50dp"

android:height="50dp"/!-- 寬度和高度 --

!-- 填充 --

solid

android:color="@android:color/white"/!-- 填充的顏色 --

!-- 描邊 --

stroke

android:width="2dp"

android:color="@android:color/black"

android:dashWidth="1dp"

android:dashGap="2dp"/

/shape

android 百度地圖上怎么畫(huà)線，畫(huà)圓

//代碼如下

import?android.content.Context;

import?android.graphics.Canvas;

import?android.graphics.Color;

import?android.graphics.Paint;

import?android.graphics.Paint.Style;

import?android.graphics.Path;

import?android.graphics.Point;

import?android.os.Bundle;

import?com.baidu.mapapi.BMapManager;

import?com.baidu.mapapi.GeoPoint;

import?com.baidu.mapapi.MapActivity;

import?com.baidu.mapapi.MapController;

import?com.baidu.mapapi.MapView;

import?com.baidu.mapapi.Overlay;

import?com.baidu.mapapi.Projection;

public?class?BaiduMapActivity?extends?MapActivity?{

private?Context?mContext;

private?MapView?mapView;

@Override

protected?boolean?isRouteDisplayed()?{

//?TODO?Auto-generated?method?stub

return?false;

}

private?GeoPoint?gpoint1,?gpoint2,?gpoint3;//?連線的點(diǎn)

@Override

protected?void?onCreate(Bundle?arg0)?{

super.onCreate(arg0);

setContentView(R.layout.baidumap_layout);

BaseApplication?baseApp?=?(BaseApplication)?this.getApplication();

if?(baseApp.mBMapManage?==?null)?{

baseApp.mBMapManage?=?new?BMapManager(mContext);

baseApp.mBMapManage.init(baseApp.mStrKey,

new?BaseApplication.MyGeneralListener());

}

baseApp.mBMapManage.start();

super.initMapActivity(baseApp.mBMapManage);//?初始化map?sdk

mapView?=?(MapView)?findViewById(R.id.bmapView);

mapView.setBuiltInZoomControls(true);

//?設(shè)置在縮放動(dòng)畫(huà)過(guò)程中也顯示overlay,默認(rèn)為不繪制

mapView.setDrawOverlayWhenZooming(true);

//?RouteLine?routeLine?=

//?(RouteLine)getIntent().getSerializableExtra("routeLine");

//這里畫(huà)點(diǎn)和連接線

MyOverlay?myOverlay?=?new?MyOverlay();

mapView.getOverlays().add(myOverlay);

MapController?mapController?=?mapView.getController();

mapController.zoomIn();

gpoint1?=?new?GeoPoint((int)?(2259316?*?10),

(int)?(11396279?*?10));

gpoint2?=?new?GeoPoint((int)?(2259245?*?10),

(int)?(11396226?*?10));

gpoint3?=?new?GeoPoint((int)?(2259121?*?10),

(int)?(11396066?*?10));????????????????

mapController.animateTo(gpoint1);//設(shè)置一個(gè)起點(diǎn)

}

class?MyOverlay?extends?Overlay?{

@Override

public?void?draw(Canvas?canvas,?MapView?mapView,?boolean?shadow)?{

super.draw(canvas,?mapView,?shadow);

Projection?projection?=?mapView.getProjection();

Point?p1?=?new?Point();

Point?p2?=?new?Point();

Point?p3?=?new?Point();

//?經(jīng)度轉(zhuǎn)像素

projection.toPixels(gpoint1,?p1);

projection.toPixels(gpoint2,?p2);

projection.toPixels(gpoint3,?p3);

//第一個(gè)畫(huà)筆?畫(huà)圓

Paint?fillPaint?=?new?Paint();

fillPaint.setColor(Color.BLUE);

fillPaint.setAntiAlias(true);

fillPaint.setStyle(Style.FILL);

//?將圖畫(huà)到上層

canvas.drawCircle(p1.x,?p1.y,?5.0f,?fillPaint);

canvas.drawCircle(p2.x,?p2.y,?5.0f,?fillPaint);

canvas.drawCircle(p3.x,?p3.y,?5.0f,?fillPaint);

//第二個(gè)畫(huà)筆?畫(huà)線

Paint?paint?=?new?Paint();

paint.setColor(Color.BLUE);

paint.setDither(true);

paint.setStyle(Paint.Style.STROKE);

paint.setStrokeJoin(Paint.Join.ROUND);

paint.setStrokeCap(Paint.Cap.ROUND);

paint.setStrokeWidth(4);

//連接

Path?path?=?new?Path();

path.moveTo(p1.x,?p1.y);

path.lineTo(p2.x,?p2.y);

path.lineTo(p3.x,?p3.y);

//畫(huà)出路徑

canvas.drawPath(path,?paint);

}

}

}

android 能在bitmap上繪制圓嗎

能，這是往圖片（圖片轉(zhuǎn)為Bitmap）上寫(xiě)入文字、圖片，你換成畫(huà)圓就是得了。

/**

* 往圖片上寫(xiě)入文字、圖片等內(nèi)容

*/

private void drawNewBitmap(String str) {

Bitmap photo = BitmapFactory.decodeResource(this.getResources(),R.drawable.introduce_first);

int width = photo.getWidth();

int hight = photo.getHeight();

Bitmap bitmap = Bitmap.createBitmap(width, hight, Bitmap.Config.ARGB_8888); // 建立一個(gè)空的BItMap

Canvas canvas = new Canvas(bitmap);// 初始化畫(huà)布繪制的圖像到icon上

Paint photoPaint = new Paint(); // 建立畫(huà)筆

photoPaint.setDither(true); // 獲取跟清晰的圖像采樣

photoPaint.setFilterBitmap(true);// 過(guò)濾一些

Rect src = new Rect(0, 0, photo.getWidth(), photo.getHeight());// 創(chuàng)建一個(gè)指定的新矩形的坐標(biāo)

Rect dst = new Rect(0, 0, width, hight);// 創(chuàng)建一個(gè)指定的新矩形的坐標(biāo)

canvas.drawBitmap(photo, src, dst, photoPaint);// 將photo 縮放或則擴(kuò)大到

// dst使用的填充區(qū)photoPaint

Paint textPaint = new Paint(Paint.ANTI_ALIAS_FLAG | Paint.DEV_KERN_TEXT_FLAG);// 設(shè)置畫(huà)筆

textPaint.setTextSize(30.0f);// 字體大小

textPaint.setTypeface(Typeface.DEFAULT_BOLD);// 采用默認(rèn)的寬度

textPaint.setColor(Color.BLACK);// 采用的顏色

canvas.drawText(str, 200, 200, textPaint);// 繪制上去字，開(kāi)始未知x,y采用那只筆繪制

canvas.drawBitmap(BitmapFactory.decodeResource(this.getResources(),R.drawable.ic_launcher), 100, 100, textPaint);

canvas.save(Canvas.ALL_SAVE_FLAG);

canvas.restore();

iv.setBackgroundDrawable(new BitmapDrawable(this.getResources(), bitmap));

saveMyBitmap(bitmap,"test1");

}

android如何在屏幕點(diǎn)擊位置畫(huà)一個(gè)小圓

主要運(yùn)用SurfaceView來(lái)實(shí)現(xiàn)在屏幕上畫(huà)一個(gè)圓，你可以通過(guò)按方向鍵和觸摸屏幕來(lái)改變圓的位置

代碼：

Activity

package com.view;

import android.app.Activity;

import android.os.Bundle;

import android.view.Window;

import android.view.WindowManager;

public class MainActivity extends Activity {

/** Called when the activity is first created. */

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

// 隱藏狀態(tài)欄

this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,

WindowManager.LayoutParams.FLAG_FULLSCREEN);

// 把Activity的標(biāo)題去掉

requestWindowFeature(Window.FEATURE_NO_TITLE);

// 設(shè)置布局

this.setContentView(new MySurfaceView(this));

}

}

SurfaceView

package com.view;

import android.content.Context;

import android.graphics.Canvas;

import android.graphics.Color;

import android.graphics.Paint;

import android.view.KeyEvent;

import android.view.MotionEvent;

import android.view.SurfaceHolder;

import android.view.SurfaceHolder.Callback;

import android.view.SurfaceView;

public class MySurfaceView extends SurfaceView implements Runnable, Callback {

private SurfaceHolder mHolder; // 用于控制SurfaceView

private Thread t; // 聲明一條線程

private boolean flag; // 線程運(yùn)行的標(biāo)識(shí)，用于控制線程

private Canvas mCanvas; // 聲明一張畫(huà)布

private Paint p; // 聲明一支畫(huà)筆

private int x = 50, y = 50, r = 10; // 圓的坐標(biāo)和半徑

public MySurfaceView(Context context) {

super(context);

mHolder = getHolder(); // 獲得SurfaceHolder對(duì)象

mHolder.addCallback(this); // 為SurfaceView添加狀態(tài)監(jiān)聽(tīng)

p = new Paint(); // 創(chuàng)建一個(gè)畫(huà)筆對(duì)象

p.setColor(Color.WHITE); // 設(shè)置畫(huà)筆的顏色為白色

setFocusable(true); // 設(shè)置焦點(diǎn)

}

/**

* 自定義一個(gè)方法，在畫(huà)布上畫(huà)一個(gè)圓

*/

public void Draw() {

mCanvas = mHolder.lockCanvas(); // 獲得畫(huà)布對(duì)象，開(kāi)始對(duì)畫(huà)布畫(huà)畫(huà)

mCanvas.drawRGB(0, 0, 0); // 把畫(huà)布填充為黑色

mCanvas.drawCircle(x, y, r, p); // 畫(huà)一個(gè)圓

mHolder.unlockCanvasAndPost(mCanvas); // 完成畫(huà)畫(huà)，把畫(huà)布顯示在屏幕上

}

/**

* 當(dāng)SurfaceView創(chuàng)建的時(shí)候，調(diào)用此函數(shù)

*/

@Override

public void surfaceCreated(SurfaceHolder holder) {

t = new Thread(this); // 創(chuàng)建一個(gè)線程對(duì)象

flag = true; // 把線程運(yùn)行的標(biāo)識(shí)設(shè)置成true

t.start(); // 啟動(dòng)線程

}

/**

* 當(dāng)SurfaceView的視圖發(fā)生改變的時(shí)候，調(diào)用此函數(shù)

*/

@Override

public void surfaceChanged(SurfaceHolder holder, int format, int width,

int height) {

}

/**

* 當(dāng)SurfaceView銷毀的時(shí)候，調(diào)用此函數(shù)

*/

@Override

public void surfaceDestroyed(SurfaceHolder holder) {

flag = false; // 把線程運(yùn)行的標(biāo)識(shí)設(shè)置成false

}

/**

* 當(dāng)屏幕被觸摸時(shí)調(diào)用

*/

@Override

public boolean onTouchEvent(MotionEvent event) {

x = (int) event.getX(); // 獲得屏幕被觸摸時(shí)對(duì)應(yīng)的X軸坐標(biāo)

y = (int) event.getY(); // 獲得屏幕被觸摸時(shí)對(duì)應(yīng)的Y軸坐標(biāo)

return true;

}

/**

* 當(dāng)用戶按鍵時(shí)調(diào)用

*/

@Override

public boolean onKeyDown(int keyCode, KeyEvent event) {

if(keyCode == KeyEvent.KEYCODE_DPAD_UP){ //當(dāng)用戶點(diǎn)擊↑鍵時(shí)

y--; //設(shè)置Y軸坐標(biāo)減1

}

return super.onKeyDown(keyCode, event);

}

@Override

public void run() {

while (flag) {

Draw(); // 調(diào)用自定義畫(huà)畫(huà)方法

try {

Thread.sleep(50); // 讓線程休息50毫秒

} catch (InterruptedException e) {

e.printStackTrace();

}

}

}

}

MySurfaceView首先繼承SurfaceView，然后實(shí)現(xiàn)Runnable和Callback接口

重寫(xiě)了Runnable的run方法和Callback的surfaceCreated(SurfaceHolder holder)，surfaceChanged(SurfaceHolder holder, int format, int width,int height)，surfaceDestroyed(SurfaceHolder holder)方法，

還實(shí)現(xiàn)了onTouchEvent(MotionEvent event)，onKeyDown(int keyCode, KeyEvent event)方法來(lái)，詳細(xì)的在代碼里已注釋。

Android開(kāi)發(fā),怎樣做一個(gè)畫(huà)圓圈的動(dòng)畫(huà)效果

畫(huà)圓應(yīng)該很簡(jiǎn)單，自動(dòng)循環(huán)的話，你就每隔一段時(shí)間刷新一下view

網(wǎng)站標(biāo)題：畫(huà)圓android,畫(huà)圓的方法素描
文章起源：http://jinyejixie.com/article0/dsedpoo.html

成都網(wǎng)站建設(shè)公司_創(chuàng)新互聯(lián)，為您提供手機(jī)網(wǎng)站建設(shè)、面包屑導(dǎo)航、App設(shè)計(jì)、微信公眾號(hào)、搜索引擎優(yōu)化、全網(wǎng)營(yíng)銷推廣

廣告

聲明：本網(wǎng)站發(fā)布的內(nèi)容（圖片、視頻和文字）以用戶投稿、用戶轉(zhuǎn)載內(nèi)容為主，如果涉及侵權(quán)請(qǐng)盡快告知，我們將會(huì)在第一時(shí)間刪除。文章觀點(diǎn)不代表本網(wǎng)站立場(chǎng)，如需處理請(qǐng)聯(lián)系客服。電話：028-86922220；郵箱：631063699@qq.com。內(nèi)容未經(jīng)允許不得轉(zhuǎn)載，或轉(zhuǎn)載時(shí)需注明來(lái)源： 創(chuàng)新互聯(lián)