我想将3张图像显示在这些内部透明的帧中。但我使用了3个图像视图来显示我的图片。问题是它们在帧中并不精确，但它们进入下一帧以填充图像视图的宽度和高度。这里我附加我的xml文件以及java文件。我不知道该使用什么，以便我的图像可以修复。掩蔽是选项还是别的什么？
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@android:color/white"
>
<android.support.v7.widget.RecyclerView
android:id="@+id/recycler_view"
android:layout_width="match_parent"
android:layout_height="60dp"
android:layout_alignParentBottom="true">
</android.support.v7.widget.RecyclerView>
<RelativeLayout
android:id="@+id/imgContainer"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_above="@+id/recycler_view"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_below="@+id/save_layout">
<ImageView
android:id="@+id/leftside"
android:layout_width="128dp"
android:layout_height="320dp"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_centerVertical="true"
android:layout_gravity="center_vertical"
android:scaleType="matrix" />
<ImageView
android:id="@+id/middle"
android:layout_width="128dp"
android:layout_height="320dp"
android:layout_centerVertical="true"
android:layout_gravity="center_vertical"
android:layout_toRightOf="@+id/leftside"
android:scaleType="matrix" />
<ImageView
android:id="@+id/rightside"
android:layout_width="128dp"
android:layout_height="320dp"
android:layout_alignParentEnd="true"
android:layout_alignParentRight="true"
android:layout_centerVertical="true"
android:layout_gravity="center_vertical"
android:scaleType="matrix" />
<ImageView
android:id="@+id/imgframe"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_centerHorizontal="true" />
</RelativeLayout>
</RelativeLayout>
import android.Manifest;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.pm.PackageManager;
import android.graphics.Bitmap;
import android.graphics.Matrix;
import android.graphics.PointF;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.RelativeLayout;
import android.widget.Toast;
import com.bumptech.glide.Glide;
import com.bumptech.glide.load.engine.DiskCacheStrategy;
import com.google.android.gms.ads.AdListener;
import com.google.android.gms.ads.AdRequest;
import com.google.android.gms.ads.InterstitialAd;
import com.squareup.picasso.Picasso;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.List;
import droidninja.filepicker.FilePickerBuilder;
import droidninja.filepicker.FilePickerConst;
import pub.devrel.easypermissions.AppSettingsDialog;
import pub.devrel.easypermissions.EasyPermissions;
public class DisplayActivity extends AppCompatActivity implements EasyPermissions.PermissionCallbacks {
public static final int RC_WRITE_PERMISSION = 12;
static final int NONE = 0;
static final int DRAG = 1;
static final int ZOOM = 2;
private static final int EXTERNAL_CAMERA_PERMISSION_CONSTANT = 100;
protected static InterstitialAd mInterstitialAd;
RecyclerView horizontal_recycler_view;
HorizontalAdapter horizontalAdapter;
Matrix matrix = new Matrix();
Matrix savedMatrix = new Matrix();
PointF startPoint = new PointF();
PointF midPoint = new PointF();
float oldDist = 1f;
int mode = NONE;
ImageView leftside, rightside, middleside;
String currentImage = "";
RelativeLayout imgContainer;
AlertDialog.Builder builder;
ImageView mImage;
File sdImageMainDirectory;
int click = 0;
ArrayList<String> filePaths = new ArrayList<>();
ArrayList<Spacecraft> spacecrafts = new ArrayList<>();
private float[] lastEvent = null;
private float d = 0f;
private float newRot = 0f;
private int REQUEST_CAMERA = 1, SELECT_FILE = 5;
private String userChoosenTask;
private boolean left, right, middle = false;
private int leftClickCount = 0;
private int rightClickCount = 0;
private int middleClickCount = 0;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.display);
InterstitialAdmob();
horizontal_recycler_view = (RecyclerView) findViewById(R.id.recycler_view);
horizontalAdapter = new HorizontalAdapter(Utils.sThumbs, this);
LinearLayoutManager horizontalLayoutManager = new LinearLayoutManager(DisplayActivity.this, LinearLayoutManager.HORIZONTAL, false);
horizontal_recycler_view.setLayoutManager(horizontalLayoutManager);
horizontal_recycler_view.setAdapter(horizontalAdapter);
Bundle bdl = getIntent().getExtras();
int index = bdl.getInt("Index");
mImage = (ImageView) findViewById(R.id.imgframe);
mImage.setImageResource(Utils.mThumbIds[index]);
imgContainer = (RelativeLayout) findViewById(R.id.imgContainer);
leftside = (ImageView) findViewById(R.id.leftside);
rightside = (ImageView) findViewById(R.id.rightside);
middleside = (ImageView) findViewById(R.id.middle);
rightside.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
ImageView rightside = (ImageView) v;
switch (event.getAction() & MotionEvent.ACTION_MASK) {
case MotionEvent.ACTION_DOWN:
savedMatrix.set(matrix);
startPoint.set(event.getX(), event.getY());
mode = DRAG;
lastEvent = null;
break;
case MotionEvent.ACTION_POINTER_DOWN:
oldDist = spacing(event);
if (oldDist > 10f) {
savedMatrix.set(matrix);
midPoint(midPoint, event);
mode = ZOOM;
}
lastEvent = new float[4];
lastEvent[0] = event.getX(0);
lastEvent[1] = event.getX(1);
lastEvent[2] = event.getY(0);
lastEvent[3] = event.getY(1);
d = rotation(event);
break;
case MotionEvent.ACTION_UP:
if (rightClickCount == 0) {
right = true;
left = false;
}
case MotionEvent.ACTION_POINTER_UP:
mode = NONE;
lastEvent = null;
break;
case MotionEvent.ACTION_MOVE:
if (mode == DRAG) {
// ...
matrix.set(savedMatrix);
matrix.postTranslate(event.getX() - startPoint.x,
event.getY() - startPoint.y);
} else if (mode == ZOOM && event.getPointerCount() == 2) {
float newDist = spacing(event);
matrix.set(savedMatrix);
if (newDist > 10f) {
float scale = newDist / oldDist;
matrix.postScale(scale, scale, midPoint.x,
midPoint.y);
}
if (lastEvent != null) {
newRot = rotation(event);
float r = newRot - d;
matrix.postRotate(r, rightside.getMeasuredWidth() / 2,
rightside.getMeasuredHeight() / 2);
}
}
break;
}
rightside.setImageMatrix(matrix);
return true;
}
private float rotation(MotionEvent event) {
double delta_x = (event.getX(0) - event.getX(1));
double delta_y = (event.getY(0) - event.getY(1));
double radians = Math.atan2(delta_y, delta_x);
return (float) Math.toDegrees(radians);
}
@SuppressLint("FloatMath")
private float spacing(MotionEvent event) {
float x = event.getX(0) - event.getX(1);
float y = event.getY(0) - event.getY(1);
return (float) Math.sqrt(x * x + y * y);
}
private void midPoint(PointF point, MotionEvent event) {
float x = event.getX(0) + event.getX(1);
float y = event.getY(0) + event.getY(1);
point.set(x / 2, y / 2);
}
});
middleside.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
ImageView middleside = (ImageView) v;
switch (event.getAction() & MotionEvent.ACTION_MASK) {
case MotionEvent.ACTION_DOWN:
savedMatrix.set(matrix);
startPoint.set(event.getX(), event.getY());
mode = DRAG;
lastEvent = null;
break;
case MotionEvent.ACTION_POINTER_DOWN:
oldDist = spacing(event);
if (oldDist > 10f) {
savedMatrix.set(matrix);
midPoint(midPoint, event);
mode = ZOOM;
}
lastEvent = new float[4];
lastEvent[0] = event.getX(0);
lastEvent[1] = event.getX(1);
lastEvent[2] = event.getY(0);
lastEvent[3] = event.getY(1);
d = rotation(event);
break;
case MotionEvent.ACTION_UP:
if (middleClickCount == 0) {
right = false;
left = false;
middle = true;
}
case MotionEvent.ACTION_POINTER_UP:
mode = NONE;
lastEvent = null;
break;
case MotionEvent.ACTION_MOVE:
if (mode == DRAG) {
// ...
matrix.set(savedMatrix);
matrix.postTranslate(event.getX() - startPoint.x,
event.getY() - startPoint.y);
} else if (mode == ZOOM && event.getPointerCount() == 2) {
float newDist = spacing(event);
matrix.set(savedMatrix);
if (newDist > 10f) {
float scale = newDist / oldDist;
matrix.postScale(scale, scale, midPoint.x,
midPoint.y);
}
if (lastEvent != null) {
newRot = rotation(event);
float r = newRot - d;
matrix.postRotate(r, middleside.getMeasuredWidth() / 2,
middleside.getMeasuredHeight() / 2);
}
}
break;
}
middleside.setImageMatrix(matrix);
return true;
}
private float rotation(MotionEvent event) {
double delta_x = (event.getX(0) - event.getX(1));
double delta_y = (event.getY(0) - event.getY(1));
double radians = Math.atan2(delta_y, delta_x);
return (float) Math.toDegrees(radians);
}
@SuppressLint("FloatMath")
private float spacing(MotionEvent event) {
float x = event.getX(0) - event.getX(1);
float y = event.getY(0) - event.getY(1);
return (float) Math.sqrt(x * x + y * y);
}
private void midPoint(PointF point, MotionEvent event) {
float x = event.getX(0) + event.getX(1);
float y = event.getY(0) + event.getY(1);
point.set(x / 2, y / 2);
}
});
leftside.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
ImageView leftside = (ImageView) v;
switch (event.getAction() & MotionEvent.ACTION_MASK) {
case MotionEvent.ACTION_DOWN:
savedMatrix.set(matrix);
startPoint.set(event.getX(), event.getY());
mode = DRAG;
lastEvent = null;
break;
case MotionEvent.ACTION_POINTER_DOWN:
oldDist = spacing(event);
if (oldDist > 10f) {
savedMatrix.set(matrix);
midPoint(midPoint, event);
mode = ZOOM;
}
lastEvent = new float[4];
lastEvent[0] = event.getX(0);
lastEvent[1] = event.getX(1);
lastEvent[2] = event.getY(0);
lastEvent[3] = event.getY(1);
d = rotation(event);
break;
case MotionEvent.ACTION_UP:
if (leftClickCount == 0) {
left = true;
right = false;
}
case MotionEvent.ACTION_POINTER_UP:
mode = NONE;
lastEvent = null;
break;
case MotionEvent.ACTION_MOVE:
if (mode == DRAG) {
// ...
matrix.set(savedMatrix);
matrix.postTranslate(event.getX() - startPoint.x,
event.getY() - startPoint.y);
} else if (mode == ZOOM && event.getPointerCount() == 2) {
float newDist = spacing(event);
matrix.set(savedMatrix);
if (newDist > 10f) {
float scale = newDist / oldDist;
matrix.postScale(scale, scale, midPoint.x,
midPoint.y);
}
if (lastEvent != null) {
newRot = rotation(event);
float r = newRot - d;
matrix.postRotate(r, leftside.getMeasuredWidth() / 2,
leftside.getMeasuredHeight() / 2);
}
}
break;
}
leftside.setImageMatrix(matrix);
return true;
}
private float rotation(MotionEvent event) {
double delta_x = (event.getX(0) - event.getX(1));
double delta_y = (event.getY(0) - event.getY(1));
double radians = Math.atan2(delta_y, delta_x);
return (float) Math.toDegrees(radians);
}
@SuppressLint("FloatMath")
private float spacing(MotionEvent event) {
float x = event.getX(0) - event.getX(1);
float y = event.getY(0) - event.getY(1);
return (float) Math.sqrt(x * x + y * y);
}
private void midPoint(PointF point, MotionEvent event) {
float x = event.getX(0) + event.getX(1);
float y = event.getY(0) + event.getY(1);
point.set(x / 2, y / 2);
}
});
}
public Bitmap takeSnap() {
imgContainer.setDrawingCacheEnabled(true);
imgContainer.buildDrawingCache();
Bitmap bitmap = imgContainer.getDrawingCache();
return bitmap;
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
switch (requestCode) {
case FilePickerConst.REQUEST_CODE:
if (resultCode == RESULT_OK && data != null) {
filePaths = data.getStringArrayListExtra(FilePickerConst.KEY_SELECTED_PHOTOS);
Spacecraft s;
try {
for (String path : filePaths) {
s = new Spacecraft();
s.setUri(Uri.fromFile(new File(path)));
spacecrafts.add(s);
}
setImages();
} catch (Exception e) {
e.printStackTrace();
}
}
}
}
private void setImages() {
Picasso.with(this).load(spacecrafts.get(0).getUri()).into(leftside);
Picasso.with(this).load(spacecrafts.get(1).getUri()).into(middleside);
Picasso.with(this).load(spacecrafts.get(2).getUri()).into(rightside);
}
public class HorizontalAdapter extends RecyclerView.Adapter<HorizontalAdapter.MyViewHolder> {
Integer[] horizontalList;
Context context;
public HorizontalAdapter(Integer[] horizontalList, Activity context) {
this.horizontalList = horizontalList;
this.context = context;
}
@Override
public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View itemView = LayoutInflater.from(parent.getContext()).inflate(R.layout.recycler_item, parent, false);
return new MyViewHolder(itemView);
}
@Override
public void onBindViewHolder(final MyViewHolder holder, final int position) {
holder.imageView.setImageResource(horizontalList[position]);
}
@Override
public int getItemCount() {
return horizontalList.length;
}
public class MyViewHolder extends RecyclerView.ViewHolder {
ImageView imageView;
public MyViewHolder(View view) {
super(view);
imageView = view.findViewById(R.id.recycle_image);
}
mImage.setImageResource(Utils.mThumbIds[getAdapterPosition()]);
takeSnap();
}
});
}
}
}
}
答案 0 :(得分：1)
你可以试试这个：
func insert(book: inout Book) throws {
let query = "INSERT INTO book (bookName, bookAuthor, bookDesc, bookDate, bookImg, createdBy) VALUES (?, ?, ?, ?, ?, ?)"
let statement = try database.prepare(query, parameters: [
book.title, book.author, book.bookDescription, book.createDate, book.image, book.createdBy
])
try statement.step()
book.id = Int(database.lastRowId())
}
func update(book: Book) throws {
let query = "UPDATE Book SET bookName = ?, bookAuthor = ?, bookDesc = ?, bookDate = ?, bookImg = ?, createdBy = ?, WHERE bookId = ?"
let statement = try database.prepare(query, parameters: [
book.title, book.author, book.bookDescription, book.createDate, book.image, book.createdBy, book.id
])
try statement.step()
}
func delete(book: Book) throws {
let query = "DELETE FROM Book WHERE bookId = ?"
let statement = try database.prepare(query, parameters: [book.id])
try statement.step()
}
func select(bookId: Int) throws -> Book? {
let query = "SELECT bookId, bookName, bookAuthor, bookDesc, bookDate, bookImg, createdBy FROM Book WHERE bookId = ?"
let statement = try database.prepare(query, parameters: [bookId])
if try statement.step() == .row {
return book(for: statement)
} else {
return nil
}
}
func selectAll() throws -> [Book] {
let query = "SELECT bookId, bookName, bookAuthor, bookDesc, bookDate, bookImg, createdBy FROM Book"
let statement = try database.prepare(query)
var books = [Book]()
while try statement.step() == .row {
if let book = book(for: statement) {
books.append(book)
}
}
return books
}
func book(for statement: Statement) -> Book? {
guard
let id = Int(from: statement, index: 0),
let title = String(from: statement, index: 1),
let author = String(from: statement, index: 2),
let description = String(from: statement, index: 3),
let date = Date(from: statement, index: 4),
let createdBy = String(from: statement, index: 6) else {
return nil
}
let data = Data(from: statement, index: 5)
return Book(id: id, image: data, title: title, author: author, bookDescription: description, createDate: date, createdBy: createdBy)
}