android 仿银行客户签名并保存截图文件命名为本地时间 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
安卓小飞 人气:0想了解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的相关内容吗，安卓小飞在本文为您仔细讲解android 仿银行客户签名并保存截图文件命名为本地时间的相关知识和一些Code实例，欢迎阅读和指正，我们先划重点：android仿银行客户签字并保存文件,android保存图片命名为当前时间，下面大家一起来学习吧。
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，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对网站的支持！
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