先生，我们正在开发一个应用程序，教小孩子写字母。在这里，我们显示一个带有两个图像的屏幕，其中一个图像在右侧，它只是为了显示字母表的图像，另一个图像是一个轻微的图像，用户可以在其上绘制图像进行练习。我想验证用户绘制的图像是否已在基本图像上正确绘制。！
（注意：我完全不知道我在其中使用的“缩放”是什么用。）我可以请一个解决方案，因为我尝试了很多但是cudnt得到了答案
代码是：
enter code here
package com.example.androidhive;
import com.example.androidhive.ColorPickerDialog.OnColorSelectedListener;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Path;
import android.os.Bundle;
import android.support.v4.view.MotionEventCompat;
import android.util.Log;
import android.view.Display;
import android.view.Menu;
import android.view.MenuItem;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.View.OnTouchListener;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.SeekBar;
import android.widget.Toast;
import android.widget.ViewFlipper;
import android.widget.SeekBar.OnSeekBarChangeListener;
public class FullImgTwoActivity extends Activity implements OnTouchListener {
int pp;
int pickupLinesItemIndex;
int position;
PaintView paintView;
ViewFlipper layout;
int size = 0;
int progress = 0;
ImageView imageView1;
private Bitmap bmp;
private Bitmap operation;
GetScaling scaling;
@SuppressLint("NewApi")
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.full_image);
paintView = new PaintView(this);
scaling=new GetScaling(this);
layout = (ViewFlipper) findViewById(R.id.view1);
Intent i = getIntent();
position = i.getExtras().getInt("id");
final ImageAdapterTwo imageAdapterTwo = new ImageAdapterTwo(this);
imageView1 = (ImageView) findViewById(R.id.imageView1);
imageView1.setImageResource(imageAdapterTwo.mThumbIdsx[position]);
bmp=imageView1.getDrawingCache();
layout.setBackgroundResource(imageAdapterTwo.mThumbIdsy[position]);
paintView.setLayoutParams(new LinearLayout.LayoutParams(500, 500));
layout.addView(paintView);
ImageView back = (ImageView) findViewById(R.id.imageView3);
back.setOnClickListener(new OnClickListener() {
public void onClick(View arg0) {
// TODO Auto-generated method stub
if (pickupLinesItemIndex < imageAdapterTwo.mThumbIdsw.length) {
if (position <= 0) {
Toast.makeText(getApplicationContext(), "This is the starting alphabet", 90)
.show();
} else {
imageView1
.setImageResource(imageAdapterTwo.mThumbIdsx[--position]);
layout
.setBackgroundResource(imageAdapterTwo.mThumbIdsy[position]);
}
}
}
});
ImageView nexta = (ImageView) findViewById(R.id.imageView4);
nexta.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
if (pickupLinesItemIndex > imageAdapterTwo.mThumbIdsw.length) {
//if (position <=imageAdapter.mThumbIds.length) {
Toast.makeText(getApplicationContext(), "This level is done", 90)
.show();
} else {
imageView1
.setImageResource(imageAdapterTwo.mThumbIdsx[++position]);
layout
.setBackgroundResource(imageAdapterTwo.mThumbIdsy[position]);
//}
}
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// TODO Auto-generated method stub
getMenuInflater().inflate(R.menu.home, menu);
return super.onCreateOptionsMenu(menu);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// TODO Auto-generated method stub
switch (item.getItemId()) {
case R.id.select_color_menu:
showColorPickerDialogDemo();
break;
case R.id.select_clear_menu:
paintView.clear();
paintView.invalidate();
break;
case R.id.pointers_select_menu:
// pointerDialog();
break;
default:
break;
}
return super.onOptionsItemSelected(item);
}
private void pointerDialog() {
// TODO Auto-generated method stub
final Dialog d = new Dialog(FullImgTwoActivity.this);
d.setTitle("Increase pointer size");
d.setContentView(R.layout.pointerssize);
SeekBar bar = (SeekBar) d.findViewById(R.id.seekBar1);
Button save = (Button) d.findViewById(R.id.save);
Button cancel = (Button) d.findViewById(R.id.cancel);
bar.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {
@Override
public void onProgressChanged(SeekBar seekBar, int progresValue,
boolean fromUser) {
progress = progresValue;
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
}
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
// Display the value in textview
size = seekBar.getMax();
}
});
save.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
paintView.setSize(progress);
d.dismiss();
}
});
cancel.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
d.dismiss();
}
});
d.show();
}
private void showColorPickerDialogDemo() {
int initialColor = Color.WHITE;
ColorPickerDialog colorpick = new ColorPickerDialog(
FullImgTwoActivity.this, initialColor,
new OnColorSelectedListener() {
@Override
public void onColorSelected(int color) {
paintView.setColo(color);
}
});
colorpick.show();
}
public void Checkimage(View v) {
scaling.checktheimage(imageView1);
scaling.checkpaintimage(paintView);
boolean paint=scaling.bmapaint;
boolean image=scaling.bmapimage;
if(paint!=image){
AlertDialog.Builder al=new AlertDialog.Builder(FullImgTwoActivity.this);
al.setTitle("Please Try Again");
al.setIcon(R.drawable.checkno);
al.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
paintView.clear();
paintView.invalidate();
}
}) ;
al.setNegativeButton("NO",new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
Intent in=new Intent(FullImgTwoActivity.this, GridLayoutTwo.class);
startActivity(in);
finish();
}
});
AlertDialog dialog=al.create();
dialog.show();
}else {
AlertDialog.Builder al=new AlertDialog.Builder(FullImgTwoActivity.this);
al.setTitle("Please Go To Next Letter");
al.setIcon(R.drawable.checkno);
al.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
Intent in=new Intent(FullImgTwoActivity.this, GridLayoutTwo.class);
startActivity(in);
finish();
}
}) ;
al.setNegativeButton("NO",new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
paintView.clear();
paintView.invalidate();
}
});
AlertDialog dialog=al.create();
dialog.show();
}
}
//@Override
public boolean onCreateOptionsMenu1(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.activity_full_img_two, menu);
return true;
}
@Override
public boolean onTouch(View arg0, MotionEvent arg1) {
// TODO Auto-generated method stub
return false;
}
}