Android仿银行客户签名并且保存签名的截图文件并命名为本地时间
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2022-04-13 22:46:41
首先需要一个自定义view用来签字使用,可以修改颜色和画笔的粗细,可以擦拭重新画
package com.android.tcm.view;
import an...
首先需要一个自定义view用来签字使用,可以修改颜色和画笔的粗细,可以擦拭重新画
package com.android.tcm.view; import android.content.context; import android.graphics.bitmap; import android.graphics.bitmap.config; import android.graphics.canvas; import android.graphics.color; import android.graphics.paint; import android.graphics.path; import android.graphics.porterduff.mode; import android.graphics.porterduffxfermode; import android.util.attributeset; import android.view.motionevent; import android.view.view; public class signview extends view { private paint paint; private canvas cachecanvas; private bitmap cachebbitmap; private path path; static final int background_color = color.white; static final int brush_color = color.black; public signview(context context, attributeset attrs, int defstyleattr) { super(context, attrs, defstyleattr); // initview(context); // todo auto-generated constructor stub } public signview(context context, attributeset attrs) { super(context, attrs); // initview(context); // todo auto-generated constructor stub } public signview(context context) { super(context); // initview(context); // todo auto-generated constructor stub } public void initview(context context) { } @override protected void onmeasure(int widthmeasurespec, int heightmeasurespec) { // todo auto-generated method stub super.onmeasure(widthmeasurespec, heightmeasurespec); paint = new paint(); paint.setantialias(true); paint.setstrokewidth(3); paint.setstyle(paint.style.stroke); paint.setcolor(color.red); path = new path(); cachebbitmap = bitmap.createbitmap( measurespec.getsize(widthmeasurespec), measurespec.getsize(heightmeasurespec), config.argb_8888); cachecanvas = new canvas(cachebbitmap); cachecanvas.drawcolor(color.transparent); } public bitmap getcachebbitmap() { return cachebbitmap; } public void clear() { if (cachecanvas != null) { paint.setxfermode(new porterduffxfermode(mode.clear)); cachecanvas.drawpaint(paint); paint = new paint(); paint.setantialias(true); paint.setstrokewidth(3); paint.setstyle(paint.style.stroke); paint.setcolor(color.red); invalidate(); } } @override protected void ondraw(canvas canvas) { // canvas.drawcolor(brush_color); canvas.drawbitmap(cachebbitmap, 0, 0, null); canvas.drawpath(path, paint); } @override protected void onsizechanged(int w, int h, int oldw, int oldh) { int curw = cachebbitmap != null ? cachebbitmap.getwidth() : 0; int curh = cachebbitmap != null ? cachebbitmap.getheight() : 0; if (curw >= w && curh >= h) { return; } if (curw < w) curw = w; if (curh < h) curh = h; bitmap newbitmap = bitmap.createbitmap(curw, curh, config.argb_8888); canvas newcanvas = new canvas(); newcanvas.setbitmap(newbitmap); if (cachebbitmap != null) { newcanvas.drawbitmap(cachebbitmap, 0, 0, null); } cachebbitmap = newbitmap; cachecanvas = newcanvas; } private float cur_x, cur_y; @override public boolean ontouchevent(motionevent event) { float x = event.getx(); float y = event.gety(); switch (event.getaction()) { case motionevent.action_down: { if(islistener!=null){ islistener.sign(); } cur_x = x; cur_y = y; path.moveto(cur_x, cur_y); break; } case motionevent.action_move: { path.quadto(cur_x, cur_y, x, y); cur_x = x; cur_y = y; break; } case motionevent.action_up: { cachecanvas.drawpath(path, paint); path.reset(); break; } } invalidate(); return true; } public interface issignlistener{ void sign(); } issignlistener islistener; public void setislistener(issignlistener islistener) { this.islistener = islistener; } }
布局代码如下
<?xml version="1.0" encoding="utf-8"?> <relativelayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent"> <relativelayout android:id="@+id/rl" android:layout_width="match_parent" android:layout_height="match_parent" android:background="@color/white"> <framelayout android:layout_width="match_parent" android:layout_height="match_parent" android:layout_marginbottom="40dp"> <com.android.tcm.view.signview android:id="@+id/signview" android:layout_width="match_parent" android:layout_height="match_parent" /> </framelayout> <linearlayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignparentbottom="true" android:layout_centerhorizontal="true" android:orientation="horizontal"> <textview android:id="@+id/tv_clear" android:layout_width="wrap_content" android:layout_height="wrap_content" android:gravity="center" android:paddingbottom="15dp" android:paddingtop="15dp" android:text="擦除重签" android:textsize="18sp" /> <textview android:id="@+id/tv_commit" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginleft="20dp" android:gravity="center" android:paddingbottom="15dp" android:paddingtop="15dp" android:text="确认" android:textsize="18sp" /> </linearlayout> </relativelayout> </relativelayout>
主函数代码,用于获取截图(id:rl)的,并且把文件保存到本地(文件夹tvc下文件命名为当前时间如20170713 10:31:31.jpg)
package com.android.tcm.activity; import android.graphics.bitmap; import android.os.bundle; import android.os.environment; import android.view.view; import android.widget.relativelayout; import android.widget.textview; import com.android.tcm.r; import com.android.tcm.view.signview; import java.io.bytearrayoutputstream; import java.io.file; import java.io.fileoutputstream; import java.io.ioexception; import java.text.simpledateformat; import java.util.date; /** * created by sf. */ public class signactivity extends activity { private relativelayout rl; private signview mview; private textview commit, clear; private bitmap msignbitmap; private string signpath; private long time; private string filename; @override protected void oncreate(bundle savedinstancestate) { super.oncreate(savedinstancestate); setcontentview(r.layout.activity_sign); initview(); } public void initview() { mview = (signview) findviewbyid(r.id.signview); commit = (textview) findviewbyid(r.id.tv_commit); clear = (textview) findviewbyid(r.id.tv_clear); rl= (relativelayout) findviewbyid(r.id.rl); commit.setonclicklistener(new view.onclicklistener() { @override public void onclick(view arg0) { // commit.getdrawingcache();//获取控件的截图 // savesign(bitmaputil.myshot(signactivity.this)); rl.setdrawingcacheenabled(true); savesign(rl.getdrawingcache()); rl.setdrawingcacheenabled(false); } }); clear.setonclicklistener(new view.onclicklistener() { @override public void onclick(view arg0) { mview.clear(); } }); } /** * signpath是图片保存路径 * * @param bit */ public void savesign(bitmap bit) { time = system.currenttimemillis(); filename = getdatetimefrommillisecond(time); msignbitmap = bit; signpath = createfile(); } /** * @return */ private string createfile() { bytearrayoutputstream baos = null; string _path = null; try { string sign_dir = environment.getexternalstoragedirectory() .getpath() + "/" + "tcm" + "/"; file dir = new file(sign_dir); if (!dir.exists()) { dir.mkdirs(); } _path = sign_dir + filename + ".jpg"; baos = new bytearrayoutputstream(); msignbitmap.compress(bitmap.compressformat.jpeg, 100, baos); byte[] photobytes = baos.tobytearray(); if (photobytes != null) { new fileoutputstream(new file(_path)).write(photobytes); } } catch (ioexception e) { e.printstacktrace(); } finally { try { if (baos != null) baos.close(); } catch (ioexception e) { e.printstacktrace(); } } return _path; } @override protected void ondestroy() { // todo auto-generated method stub super.ondestroy(); if (msignbitmap != null) { msignbitmap.recycle(); } } /** * 将毫秒转化成固定格式的时间 * 时间格式: yyyy-mm-dd hh:mm:ss * * @param millisecond * @return */ public static string getdatetimefrommillisecond(long millisecond) { simpledateformat simpledateformat = new simpledateformat("yyyy-mm-dd hh:mm:ss"); date date = new date(millisecond); string datestr = simpledateformat.format(date); return datestr; } }
以上所述是小编给大家介绍的android仿银行客户签名并且保存签名的截图文件并命名为本地时间,希望对大家有所帮助