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android涂鸦
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.Path;
import android.graphics.Bitmap.CompressFormat;
import android.os.Environment;
import android.view.MotionEvent;
import android.view.View;
/**
* View实现涂鸦、撤销以及重做功能
*/
public class TuyaView extends View {
private Bitmap mBitmap;
private Canvas mCanvas;
private Path mPath;
private Paint mBitmapPaint;// 画布的画笔
private Paint mPaint;// 真实的画笔
private float mX, mY;// 临时点坐标
private static final float TOUCH_TOLERANCE = 4;
// 保存Path路径的集合,用List集合来模拟栈
private static List<DrawPath> savePath;
// 记录Path路径的对象
private DrawPath dp;
private int screenWidth, screenHeight;
private class DrawPath {
public Path path;// 路径
public Paint paint;// 画笔
}
public TuyaView(Context context, int w, int h) {
super(context);
screenWidth = w;
screenHeight = h;
mBitmap = Bitmap.createBitmap(screenWidth, screenHeight, Bitmap.Config.ARGB_8888);
// 保存一次一次绘制出来的图形
mCanvas = new Canvas(mBitmap);
mBitmapPaint = new Paint(Paint.DITHER_FLAG);
mPaint = new Paint();
mPaint.setAntiAlias(true);
mPaint.setStyle(Paint.Style.STROKE);
mPaint.setStrokeJoin(Paint.Join.ROUND);// 设置外边缘
mPaint.setStrokeCap(Paint.Cap.ROUND);// 形状
mPaint.setStrokeWidth(5);// 画笔宽度
savePath = new ArrayList<DrawPath>();
}
@Override
public void onDraw(Canvas canvas) {
canvas.drawColor(0xFFAAAAAA);
// 将前面已经画过得显示出来
canvas.drawBitmap(mBitmap, 0, 0, mBitmapPaint);
if (mPath != null) {
// 实时的显示
canvas.drawPath(mPath, mPaint);
}
}
private void touch_start(float x, float y) {
mPath.moveTo(x, y);
mX = x;
mY = y;
}
private void touch_move(float x, float y) {
float dx = Math.abs(x - mX);
float dy = Math.abs(mY - y);
if (dx >= TOUCH_TOLERANCE || dy >= TOUCH_TOLERANCE) {
// 从x1,y1到x2,y2画一条贝塞尔曲线,更平滑(直接用mPath.lineTo也是可以的)
mPath.quadTo(mX, mY, (x + mX) / 2, (y + mY) / 2);
mX = x;
mY = y;
}
}
private void touch_up() {
mPath.lineTo(mX, mY);
mCanvas.drawPath(mPath, mPaint);
//将一条完整的路径保存下来(相当于入栈操作)
savePath.add(dp);
mPath = null;// 重新置空
}
/**
* 撤销的核心思想就是将画布清空,
* 将保存下来的Path路径最后一个移除掉,
* 重新将路径画在画布上面。
*/
public void undo() {
if (savePath != null && savePath.size() > 0) {
savePath.remove(savePath.size() - 1);
redrawOnBitmap();
}
}
/**
* 重做
*/
public void redo(){
if (savePath != null && savePath.size() > 0) {
savePath.clear();
redrawOnBitmap();
}
}
private void redrawOnBitmap(){
mBitmap = Bitmap.createBitmap(screenWidth, screenHeight,
Bitmap.Config.ARGB_8888);
mCanvas.setBitmap(mBitmap);// 重新设置画布,相当于清空画布
Iterator<DrawPath> iter = savePath.iterator();
while (iter.hasNext()) {
DrawPath drawPath = iter.next();
mCanvas.drawPath(drawPath.path, drawPath.paint);
}
invalidate();// 刷新
}
@Override
public boolean onTouchEvent(MotionEvent event) {
float x = event.getX();
float y = event.getY();
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
// 每次down下去重新new一个Path
mPath = new Path();
//每一次记录的路径对象是不一样的
dp = new DrawPath();
dp.path = mPath;
dp.paint = mPaint;
touch_start(x, y);
invalidate();
break;
case MotionEvent.ACTION_MOVE:
touch_move(x, y);
invalidate();
break;
case MotionEvent.ACTION_UP:
touch_up();
invalidate();
break;
}
return true;
}
public void saveToSDCard(){
String fileUrl = Environment.getExternalStorageDirectory()
.toString() + "/android/data/test.png";
try {
FileOutputStream fos = new FileOutputStream(new File(fileUrl));
mBitmap.compress(CompressFormat.PNG, 100, fos);
fos.flush();
fos.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
}
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.Path;
import android.graphics.Bitmap.CompressFormat;
import android.os.Environment;
import android.view.MotionEvent;
import android.view.View;
/**
* View实现涂鸦、撤销以及重做功能
*/
public class TuyaView extends View {
private Bitmap mBitmap;
private Canvas mCanvas;
private Path mPath;
private Paint mBitmapPaint;// 画布的画笔
private Paint mPaint;// 真实的画笔
private float mX, mY;// 临时点坐标
private static final float TOUCH_TOLERANCE = 4;
// 保存Path路径的集合,用List集合来模拟栈
private static List<DrawPath> savePath;
// 记录Path路径的对象
private DrawPath dp;
private int screenWidth, screenHeight;
private class DrawPath {
public Path path;// 路径
public Paint paint;// 画笔
}
public TuyaView(Context context, int w, int h) {
super(context);
screenWidth = w;
screenHeight = h;
mBitmap = Bitmap.createBitmap(screenWidth, screenHeight, Bitmap.Config.ARGB_8888);
// 保存一次一次绘制出来的图形
mCanvas = new Canvas(mBitmap);
mBitmapPaint = new Paint(Paint.DITHER_FLAG);
mPaint = new Paint();
mPaint.setAntiAlias(true);
mPaint.setStyle(Paint.Style.STROKE);
mPaint.setStrokeJoin(Paint.Join.ROUND);// 设置外边缘
mPaint.setStrokeCap(Paint.Cap.ROUND);// 形状
mPaint.setStrokeWidth(5);// 画笔宽度
savePath = new ArrayList<DrawPath>();
}
@Override
public void onDraw(Canvas canvas) {
canvas.drawColor(0xFFAAAAAA);
// 将前面已经画过得显示出来
canvas.drawBitmap(mBitmap, 0, 0, mBitmapPaint);
if (mPath != null) {
// 实时的显示
canvas.drawPath(mPath, mPaint);
}
}
private void touch_start(float x, float y) {
mPath.moveTo(x, y);
mX = x;
mY = y;
}
private void touch_move(float x, float y) {
float dx = Math.abs(x - mX);
float dy = Math.abs(mY - y);
if (dx >= TOUCH_TOLERANCE || dy >= TOUCH_TOLERANCE) {
// 从x1,y1到x2,y2画一条贝塞尔曲线,更平滑(直接用mPath.lineTo也是可以的)
mPath.quadTo(mX, mY, (x + mX) / 2, (y + mY) / 2);
mX = x;
mY = y;
}
}
private void touch_up() {
mPath.lineTo(mX, mY);
mCanvas.drawPath(mPath, mPaint);
//将一条完整的路径保存下来(相当于入栈操作)
savePath.add(dp);
mPath = null;// 重新置空
}
/**
* 撤销的核心思想就是将画布清空,
* 将保存下来的Path路径最后一个移除掉,
* 重新将路径画在画布上面。
*/
public void undo() {
if (savePath != null && savePath.size() > 0) {
savePath.remove(savePath.size() - 1);
redrawOnBitmap();
}
}
/**
* 重做
*/
public void redo(){
if (savePath != null && savePath.size() > 0) {
savePath.clear();
redrawOnBitmap();
}
}
private void redrawOnBitmap(){
mBitmap = Bitmap.createBitmap(screenWidth, screenHeight,
Bitmap.Config.ARGB_8888);
mCanvas.setBitmap(mBitmap);// 重新设置画布,相当于清空画布
Iterator<DrawPath> iter = savePath.iterator();
while (iter.hasNext()) {
DrawPath drawPath = iter.next();
mCanvas.drawPath(drawPath.path, drawPath.paint);
}
invalidate();// 刷新
}
@Override
public boolean onTouchEvent(MotionEvent event) {
float x = event.getX();
float y = event.getY();
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
// 每次down下去重新new一个Path
mPath = new Path();
//每一次记录的路径对象是不一样的
dp = new DrawPath();
dp.path = mPath;
dp.paint = mPaint;
touch_start(x, y);
invalidate();
break;
case MotionEvent.ACTION_MOVE:
touch_move(x, y);
invalidate();
break;
case MotionEvent.ACTION_UP:
touch_up();
invalidate();
break;
}
return true;
}
public void saveToSDCard(){
String fileUrl = Environment.getExternalStorageDirectory()
.toString() + "/android/data/test.png";
try {
FileOutputStream fos = new FileOutputStream(new File(fileUrl));
mBitmap.compress(CompressFormat.PNG, 100, fos);
fos.flush();
fos.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
}
Java代码
import android.app.Activity;
import android.os.Bundle;
import android.util.DisplayMetrics;
import android.util.Log;
import android.view.KeyEvent;
public class TuyaActivity extends Activity {
private TuyaView tuyaView = null;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
DisplayMetrics dm = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(dm);
tuyaView = new TuyaView(this, dm.widthPixels, dm.heightPixels);
setContentView(tuyaView);
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK) {// 返回键
tuyaView.undo();
return true;
}else if(keyCode == KeyEvent.KEYCODE_MENU){//MENU
tuyaView.redo();
return true;
}
return super.onKeyDown(keyCode, event);
}
}
import android.app.Activity;
import android.os.Bundle;
import android.util.DisplayMetrics;
import android.util.Log;
import android.view.KeyEvent;
public class TuyaActivity extends Activity {
private TuyaView tuyaView = null;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
DisplayMetrics dm = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(dm);
tuyaView = new TuyaView(this, dm.widthPixels, dm.heightPixels);
setContentView(tuyaView);
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK) {// 返回键
tuyaView.undo();
return true;
}else if(keyCode == KeyEvent.KEYCODE_MENU){//MENU
tuyaView.redo();
return true;
}
return super.onKeyDown(keyCode, event);
}
}
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.Path;
import android.graphics.Bitmap.CompressFormat;
import android.os.Environment;
import android.view.MotionEvent;
import android.view.View;
/**
* View实现涂鸦、撤销以及重做功能
*/
public class TuyaView extends View {
private Bitmap mBitmap;
private Canvas mCanvas;
private Path mPath;
private Paint mBitmapPaint;// 画布的画笔
private Paint mPaint;// 真实的画笔
private float mX, mY;// 临时点坐标
private static final float TOUCH_TOLERANCE = 4;
// 保存Path路径的集合,用List集合来模拟栈
private static List<DrawPath> savePath;
// 记录Path路径的对象
private DrawPath dp;
private int screenWidth, screenHeight;
private class DrawPath {
public Path path;// 路径
public Paint paint;// 画笔
}
public TuyaView(Context context, int w, int h) {
super(context);
screenWidth = w;
screenHeight = h;
mBitmap = Bitmap.createBitmap(screenWidth, screenHeight, Bitmap.Config.ARGB_8888);
// 保存一次一次绘制出来的图形
mCanvas = new Canvas(mBitmap);
mBitmapPaint = new Paint(Paint.DITHER_FLAG);
mPaint = new Paint();
mPaint.setAntiAlias(true);
mPaint.setStyle(Paint.Style.STROKE);
mPaint.setStrokeJoin(Paint.Join.ROUND);// 设置外边缘
mPaint.setStrokeCap(Paint.Cap.ROUND);// 形状
mPaint.setStrokeWidth(5);// 画笔宽度
savePath = new ArrayList<DrawPath>();
}
@Override
public void onDraw(Canvas canvas) {
canvas.drawColor(0xFFAAAAAA);
// 将前面已经画过得显示出来
canvas.drawBitmap(mBitmap, 0, 0, mBitmapPaint);
if (mPath != null) {
// 实时的显示
canvas.drawPath(mPath, mPaint);
}
}
private void touch_start(float x, float y) {
mPath.moveTo(x, y);
mX = x;
mY = y;
}
private void touch_move(float x, float y) {
float dx = Math.abs(x - mX);
float dy = Math.abs(mY - y);
if (dx >= TOUCH_TOLERANCE || dy >= TOUCH_TOLERANCE) {
// 从x1,y1到x2,y2画一条贝塞尔曲线,更平滑(直接用mPath.lineTo也是可以的)
mPath.quadTo(mX, mY, (x + mX) / 2, (y + mY) / 2);
mX = x;
mY = y;
}
}
private void touch_up() {
mPath.lineTo(mX, mY);
mCanvas.drawPath(mPath, mPaint);
//将一条完整的路径保存下来(相当于入栈操作)
savePath.add(dp);
mPath = null;// 重新置空
}
/**
* 撤销的核心思想就是将画布清空,
* 将保存下来的Path路径最后一个移除掉,
* 重新将路径画在画布上面。
*/
public void undo() {
if (savePath != null && savePath.size() > 0) {
savePath.remove(savePath.size() - 1);
redrawOnBitmap();
}
}
/**
* 重做
*/
public void redo(){
if (savePath != null && savePath.size() > 0) {
savePath.clear();
redrawOnBitmap();
}
}
private void redrawOnBitmap(){
mBitmap = Bitmap.createBitmap(screenWidth, screenHeight,
Bitmap.Config.ARGB_8888);
mCanvas.setBitmap(mBitmap);// 重新设置画布,相当于清空画布
Iterator<DrawPath> iter = savePath.iterator();
while (iter.hasNext()) {
DrawPath drawPath = iter.next();
mCanvas.drawPath(drawPath.path, drawPath.paint);
}
invalidate();// 刷新
}
@Override
public boolean onTouchEvent(MotionEvent event) {
float x = event.getX();
float y = event.getY();
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
// 每次down下去重新new一个Path
mPath = new Path();
//每一次记录的路径对象是不一样的
dp = new DrawPath();
dp.path = mPath;
dp.paint = mPaint;
touch_start(x, y);
invalidate();
break;
case MotionEvent.ACTION_MOVE:
touch_move(x, y);
invalidate();
break;
case MotionEvent.ACTION_UP:
touch_up();
invalidate();
break;
}
return true;
}
public void saveToSDCard(){
String fileUrl = Environment.getExternalStorageDirectory()
.toString() + "/android/data/test.png";
try {
FileOutputStream fos = new FileOutputStream(new File(fileUrl));
mBitmap.compress(CompressFormat.PNG, 100, fos);
fos.flush();
fos.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
}
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.Path;
import android.graphics.Bitmap.CompressFormat;
import android.os.Environment;
import android.view.MotionEvent;
import android.view.View;
/**
* View实现涂鸦、撤销以及重做功能
*/
public class TuyaView extends View {
private Bitmap mBitmap;
private Canvas mCanvas;
private Path mPath;
private Paint mBitmapPaint;// 画布的画笔
private Paint mPaint;// 真实的画笔
private float mX, mY;// 临时点坐标
private static final float TOUCH_TOLERANCE = 4;
// 保存Path路径的集合,用List集合来模拟栈
private static List<DrawPath> savePath;
// 记录Path路径的对象
private DrawPath dp;
private int screenWidth, screenHeight;
private class DrawPath {
public Path path;// 路径
public Paint paint;// 画笔
}
public TuyaView(Context context, int w, int h) {
super(context);
screenWidth = w;
screenHeight = h;
mBitmap = Bitmap.createBitmap(screenWidth, screenHeight, Bitmap.Config.ARGB_8888);
// 保存一次一次绘制出来的图形
mCanvas = new Canvas(mBitmap);
mBitmapPaint = new Paint(Paint.DITHER_FLAG);
mPaint = new Paint();
mPaint.setAntiAlias(true);
mPaint.setStyle(Paint.Style.STROKE);
mPaint.setStrokeJoin(Paint.Join.ROUND);// 设置外边缘
mPaint.setStrokeCap(Paint.Cap.ROUND);// 形状
mPaint.setStrokeWidth(5);// 画笔宽度
savePath = new ArrayList<DrawPath>();
}
@Override
public void onDraw(Canvas canvas) {
canvas.drawColor(0xFFAAAAAA);
// 将前面已经画过得显示出来
canvas.drawBitmap(mBitmap, 0, 0, mBitmapPaint);
if (mPath != null) {
// 实时的显示
canvas.drawPath(mPath, mPaint);
}
}
private void touch_start(float x, float y) {
mPath.moveTo(x, y);
mX = x;
mY = y;
}
private void touch_move(float x, float y) {
float dx = Math.abs(x - mX);
float dy = Math.abs(mY - y);
if (dx >= TOUCH_TOLERANCE || dy >= TOUCH_TOLERANCE) {
// 从x1,y1到x2,y2画一条贝塞尔曲线,更平滑(直接用mPath.lineTo也是可以的)
mPath.quadTo(mX, mY, (x + mX) / 2, (y + mY) / 2);
mX = x;
mY = y;
}
}
private void touch_up() {
mPath.lineTo(mX, mY);
mCanvas.drawPath(mPath, mPaint);
//将一条完整的路径保存下来(相当于入栈操作)
savePath.add(dp);
mPath = null;// 重新置空
}
/**
* 撤销的核心思想就是将画布清空,
* 将保存下来的Path路径最后一个移除掉,
* 重新将路径画在画布上面。
*/
public void undo() {
if (savePath != null && savePath.size() > 0) {
savePath.remove(savePath.size() - 1);
redrawOnBitmap();
}
}
/**
* 重做
*/
public void redo(){
if (savePath != null && savePath.size() > 0) {
savePath.clear();
redrawOnBitmap();
}
}
private void redrawOnBitmap(){
mBitmap = Bitmap.createBitmap(screenWidth, screenHeight,
Bitmap.Config.ARGB_8888);
mCanvas.setBitmap(mBitmap);// 重新设置画布,相当于清空画布
Iterator<DrawPath> iter = savePath.iterator();
while (iter.hasNext()) {
DrawPath drawPath = iter.next();
mCanvas.drawPath(drawPath.path, drawPath.paint);
}
invalidate();// 刷新
}
@Override
public boolean onTouchEvent(MotionEvent event) {
float x = event.getX();
float y = event.getY();
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
// 每次down下去重新new一个Path
mPath = new Path();
//每一次记录的路径对象是不一样的
dp = new DrawPath();
dp.path = mPath;
dp.paint = mPaint;
touch_start(x, y);
invalidate();
break;
case MotionEvent.ACTION_MOVE:
touch_move(x, y);
invalidate();
break;
case MotionEvent.ACTION_UP:
touch_up();
invalidate();
break;
}
return true;
}
public void saveToSDCard(){
String fileUrl = Environment.getExternalStorageDirectory()
.toString() + "/android/data/test.png";
try {
FileOutputStream fos = new FileOutputStream(new File(fileUrl));
mBitmap.compress(CompressFormat.PNG, 100, fos);
fos.flush();
fos.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
}
Java代码
import android.app.Activity;
import android.os.Bundle;
import android.util.DisplayMetrics;
import android.util.Log;
import android.view.KeyEvent;
public class TuyaActivity extends Activity {
private TuyaView tuyaView = null;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
DisplayMetrics dm = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(dm);
tuyaView = new TuyaView(this, dm.widthPixels, dm.heightPixels);
setContentView(tuyaView);
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK) {// 返回键
tuyaView.undo();
return true;
}else if(keyCode == KeyEvent.KEYCODE_MENU){//MENU
tuyaView.redo();
return true;
}
return super.onKeyDown(keyCode, event);
}
}
import android.app.Activity;
import android.os.Bundle;
import android.util.DisplayMetrics;
import android.util.Log;
import android.view.KeyEvent;
public class TuyaActivity extends Activity {
private TuyaView tuyaView = null;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
DisplayMetrics dm = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(dm);
tuyaView = new TuyaView(this, dm.widthPixels, dm.heightPixels);
setContentView(tuyaView);
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK) {// 返回键
tuyaView.undo();
return true;
}else if(keyCode == KeyEvent.KEYCODE_MENU){//MENU
tuyaView.redo();
return true;
}
return super.onKeyDown(keyCode, event);
}
}
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综上所述,实现“Android涂鸦上传到服务器”涉及Android图形绘制、文件操作、网络通信等多个方面,需要综合运用多种技术和技巧。通过以上步骤,可以构建一个功能完整的涂鸦应用,让用户能够轻松地分享自己的创意作品...
### Android涂鸦板应用开发详解 #### 一、项目背景与目标 本次开发的目标是创建一个简单的Android涂鸦板应用程序。作者之前已经在Qt平台上实现了类似的涂鸦功能,并且现在希望将其移植到Android平台上,以此来体验...
在Android开发中,实现涂鸦功能是一项有趣且实用的任务,尤其适用于教育、设计或娱乐类应用。本示例Demo提供了一个完整的解决方案,让开发者能够轻松地集成这些特性到自己的应用程序中。下面我们将深入探讨这个...
"Android 涂鸦板应用开发" Android 涂鸦板应用开发是 Android 开发中的一种常见应用,通常用于绘制和涂鸦。在本节中,我们将学习如何开发一个简单的涂鸦板应用,涵盖了Android开发的基本知识点。 知识点一:...
在Android开发中,"Android涂鸦及刮刮乐示例"是一个常见的应用场景,它涉及到用户交互、图形绘制以及动画效果的实现。这个示例通常包括一个涂鸦板功能,允许用户自由绘画,以及一个刮刮乐游戏,用户可以通过手势刮开...
本资源“真正的android涂鸦源码,摘取自androidapidemo”提供了这样一个简化版的涂鸦程序,方便初学者快速上手。 在Android API Demo中,FingerPaint项目是一个典型的示例,它展示了如何利用Canvas和MotionEvent来...
这个压缩包文件“一个涂鸦还有画矩形 圆形的小Demo_android涂鸦绘画源码.zip”显然包含了一个Android应用程序的源代码,该程序允许用户进行涂鸦并绘制矩形和圆形。这是一个基础的图形用户界面(GUI)应用,特别适用...
"android涂鸦小例子"是一个关于如何在Android应用中实现一个简单的涂鸦功能的教程。在这个项目中,我们将探讨如何创建一个自定义的View类,使得用户可以在屏幕上进行自由绘图。 首先,我们来理解"自定义控件"的概念...
今年刚给人做的毕设涂鸦app源码。功能包括新建画布涂鸦,选择图片涂鸦,涂鸦形式包括画笔,图形,贴图,文字等,图片渲染,图片裁剪,资源文件是其他源码,有需要的可以联系 qq:920671458
本示例主要关注的是"Android涂鸦马赛克效果源码",它包含了两种关键功能:打马赛克和手指涂鸦,以及一种特殊的表格模式。这些特性使得用户可以在图片上进行创意编辑,增加了应用程序的趣味性和互动性。 首先,我们...
本资源提供了Android版本的涂鸦跳跃源码,对于想要学习Android游戏开发或者对移动游戏编程感兴趣的开发者来说,这是一个宝贵的参考材料。下面将详细探讨涂鸦跳跃这款游戏的核心知识点及其在Android平台上的实现。 1...
在Android平台上,开发一款能够允许用户涂鸦并保存图片的应用是一项常见的任务。这个应用的核心功能包括画布操作、颜色选择、线条粗细调整以及图片的保存。以下将详细讲解实现这些功能所需的关键知识点。 首先,...
在Android平台上实现涂鸦功能,可以为用户带来丰富的交互体验,尤其适用于...以上就是Android涂鸦功能的主要知识点。通过理解和实践这些内容,开发者能够构建出具有完整涂鸦功能的应用,为用户提供富有创意的交互体验。
总的来说,这个Android涂鸦课程设计项目不仅涵盖了Android应用开发的基础技术,如UI设计、事件处理和文件操作,还锻炼了开发者解决问题和创新设计的能力。通过这样的实践,学生能深入理解Android平台的特性和开发...
在Android开发中,"Android涂鸦"是一种常见的功能,它允许用户在图片上进行自由的绘制,例如添加标记、注释或创意性地编辑图片。这个功能通常在教育、绘图应用或者协作类应用中非常实用。在实现涂鸦功能时,我们需要...
"Android涂鸦笔记本"就是一个很好的示例,它利用自定义View实现了类似于早期QQ的涂鸦功能。这个项目不仅提供了基本的绘图操作,如绘制线条、曲线,还包含了更多高级特性,如橡皮擦功能,以及保存和分享涂鸦作品的...