布局文件

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"><FrameLayout
        android:id="@+id/fl_signature"android:layout_width="fill_parent"android:layout_height="200dp"android:layout_marginLeft="20dp"android:layout_marginRight="20dp"android:layout_marginTop="10dp"android:background="@drawable/singature_bg"android:gravity="top"></FrameLayout><ImageView
        android:id="@+id/iv_signature"android:layout_width="fill_parent"android:layout_height="200dp"android:layout_marginLeft="20dp"android:layout_marginRight="20dp"android:layout_marginTop="10dp"android:background="@drawable/signature_shape"android:gravity="top"android:visibility="gone"/><RelativeLayout
                android:layout_width="match_parent"android:layout_height="wrap_content"android:layout_marginTop="20dp"android:layout_marginBottom="20dp"><TextView
                    android:id="@+id/tv_revert_signature"android:layout_width="100dp"android:layout_height="35dp"android:layout_alignParentRight="true"android:layout_marginRight="140dp"android:background="@drawable/btn_order_details_pay_bg"android:gravity="center"android:paddingLeft="30dp"android:paddingRight="30dp"android:text="重签"android:textColor="@color/code_number_bg"android:textSize="@dimen/text_title_word" /><TextView
                    android:id="@+id/tv_signature_save"android:layout_width="100dp"android:layout_height="35dp"android:layout_alignParentRight="true"android:layout_marginRight="20dp"android:background="@drawable/bt_bg"android:gravity="center"android:paddingLeft="30dp"android:paddingRight="30dp"android:text="保存"android:textColor="@color/white"android:textSize="@dimen/text_title_word" /></RelativeLayout></LinearLayout>

* 开始签名private void StartSignature() {// 获取屏幕尺寸DisplayMetrics mDisplayMetrics = new DisplayMetrics();getWindow().getWindowManager().getDefaultDisplay().getMetrics(mDisplayMetrics);}@Overridepublic void onWindowFocusChanged(boolean hasFocus) {super.onWindowFocusChanged(hasFocus);if(hasFocus&&mPaintView==null){int screenWidth = mFl_signature.getMeasuredWidth();int screenHeight = mFl_signature.getMeasuredHeight();mPaintView=new PaintView(getApplicationContext(),screenWidth, screenHeight);mFl_signature.addView(mPaintView);mPaintView.requestFocus();}}

//创建签名文件

  private void createSignFile() {FileOutputStream fos = null;File file = null;try {path= generateImgePath();file = new File(path);fos = new FileOutputStream(file);//如果设置成mPaintBitmap.compress(Bitmap.CompressFormat.JPEG, 100, fos);} catch (IOException e) {e.printStackTrace();} finally {try {if (fos != null) {fos.close();}} catch (IOException e) {e.printStackTrace();}}}

//重新签名

 if (mPaintView.getPath().isEmpty()){ToastUtils.showShort(this,"您还没有签名呦");}else {mPaintView.clear();}