一、基本思路
阅读程序源码的书架界面，实际上就是一个自定义的GridView ,然后给相应的控件设置相应的事件就可以了。比如给书籍(item)设置点击和长按事件,导入按钮设置点击事件...
二、自定义GridView
MyGradiView.java
package com.xiaoli.util;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.util.AttributeSet;
import android.widget.GridView;
import com.hck.LoverReader.R;
public class MyGridView extends GridView {
public static Bitmap background;
public MyGridView(Context context, AttributeSet attrs) {
super(context, attrs);
background = BitmapFactory.decodeResource(getResources(),
R.drawable.shelf_background2);
}
public void setBackground(int drawable){
background= BitmapFactory.decodeResource(getResources(),
drawable);
}
@Override
protected void dispatchDraw(Canvas canvas) {
int count = getChildCount();
int top = count > 0 ? getChildAt(0).getTop() : 0;
int backgroundWidth = background.getWidth();
int backgroundHeight = background.getHeight()+2;
int width = getWidth();
int height = getHeight();
//Bitmap bitmap=Bitmap.createScaledBitmap(background, MyTool.getWidth(), MyTool.getHight()/8, true);
for (int y = top; y < height; y += backgroundHeight) {
for (int x = 0; x < width; x += backgroundWidth) {
canvas.drawBitmap(background, x, y, null);
}
}
super.dispatchDraw(canvas);
}
}
设配器
class ShlefAdapter extends BaseAdapter{
@Override
public int getCount() {
return listItem.size();
}
@Override
public Object getItem(int arg0) {
return arg0;
}
@Override
public long getItemId(int arg0) {
return arg0;
}
@Override
public View getView(int position, View contentView, ViewGroup arg2) {
contentView=LayoutInflater.from(getApplicationContext()).inflate(R.layout.item1, null);
//文字
TextView view=(TextView) contentView.findViewById(R.id.imageView1);
view.setText(listItem.get(position).get("BookName").toString());
//图片
ImageView image1 =(ImageView)contentView.findViewById(R.id.image);
if(position==0){
image1.setImageResource(R.drawable.cover_txt0);
} else if(position==1){
image1.setImageResource(R.drawable.cover_txt1);
}else{
image1.setImageResource(R.drawable.cover);
}
return contentView;
}
}
每一项显示的布局item1.xml
<?xml version="1.0" encoding="utf-8"?> <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:layout_gravity="center" android:gravity="center" android:orientation="vertical"> <ImageView android:id="@+id/image" android:layout_width="90dp" android:layout_height="120dp" android:layout_gravity="center" android:layout_marginLeft="6dp" android:layout_marginTop="10dp" android:scaleType="fitXY" android:src="@drawable/cover_txt0" /> <TextView android:id="@+id/imageView1" android:layout_width="85dp" android:layout_height="wrap_content" android:layout_gravity="center_horizontal" android:layout_marginLeft="10dp" android:layout_marginRight="3dp" android:layout_marginTop="15dp" android:background="@drawable/text_title_shap" android:ellipsize="middle" android:gravity="center" android:padding="2dp" android:singleLine="true" android:textColor="#FFFFFF" android:textSize="16sp" android:textStyle="bold" /> </FrameLayout>
效果图
然后是主布局文件main.xml
<?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="vertical" > <include layout="@layout/head" android:id="@+id/head"/> <com.xiaoli.util.MyGridView android:gravity="center" android:id="@+id/bookShelf" android:layout_width="fill_parent" android:layout_height="fill_parent" android:layout_below="@id/head" android:cacheColorHint="#00000000" android:columnWidth="90.0dip" android:fadingEdge="none" android:horizontalSpacing="5dp" android:listSelector="#00000000" android:numColumns="3" android:scrollbars="none" android:verticalSpacing="10dp" /> <!-- 点击按钮弹出菜单 --> <Button android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentBottom="true" android:layout_alignParentLeft="true" android:layout_marginBottom="18dp" android:background="@drawable/button_shape_selector" android:onClick="OnOpenMenu" android:textColor="@color/bg" android:text="功能"/> </RelativeLayout>
效果图
最后在网格视图中添加数据库存储的数据,就可以有书籍的效果了
相关代码
public void getDate() {
SQLiteDatabase db = localbook.getReadableDatabase();
String col[] = { "path" };
Cursor cur = db.query(FinalDate.DATABASE_TABKE, col, "type=1", null, null, null, null);
Cursor cur1 = db.query(FinalDate.DATABASE_TABKE, col, "type=2", null, null, null, null);
Integer num = cur.getCount();
Integer num1 = cur1.getCount();
Log.i("hck", "booklistActivity2 :"+num);
Log.i("hck", "booklistActivity2 :"+num1);
ArrayList<String> arraylist = new ArrayList<String>();
while (cur1.moveToNext()) {
String s = cur1.getString(cur1.getColumnIndex("path"));
arraylist.add(s);
}
while (cur.moveToNext()) {
String s = cur.getString(cur.getColumnIndex("path"));
arraylist.add(s);
}
db.close();
cur.close();
cur1.close();
if (listItem == null)
listItem = new ArrayList<HashMap<String, Object>>();
listItem.clear();
String[] bookids = getResources().getStringArray(R.array.bookid);
String[] booknames = getResources().getStringArray(R.array.bookname);
String[] bookauthors = getResources().getStringArray(R.array.bookauthor);
Map<String, String[]> maps = new HashMap<String, String[]>();
for (int i = 0; i < bookids.length; i++) {
String[] value = new String[2];
value[0] = booknames[i];
value[1] = bookauthors[i];
maps.put(bookids[i], value);
}
for (int i = 0; i < num + num1; i++) {
if (i < num1) {
File file1 = new File(arraylist.get(i));
String m = file1.getName().substring(0, file1.getName().length() - 4);
if (m.length() > 8) {
m = m.substring(0, 8) + "...";
}
String id = arraylist.get(i).substring(arraylist.get(i).lastIndexOf("/") + 1);
String[] array = maps.get(id);
String auther = array != null && array[1] == null ? "未知" : array[1];
String name = array[0] == null ? m : array[0];
map = new HashMap<String, Object>();
if (i == 0) {
map.put("itemback", R.drawable.itemback);
} else if ((i % 2) == 0) {
map.put("itemback", R.drawable.itemback);
}
map.put("ItemImage", map2 != null ? map2.get(file1.getName())[0] : R.drawable.cover);
map.put("BookName", name == null ? m : name);
map.put("ItemTitle1", "作者：" + auther);
map.put("LastImage", "推荐书目");
map.put("path", file1.getPath());
map.put("com", 0 + file1.getName());// 单独用于排序
listItem.add(map);
Log.i("hck","本地"+ listItem.size()+"size");
} else {
map = new HashMap<String, Object>();
File file1 = new File(arraylist.get(i));
String m = file1.getName().substring(0, file1.getName().length() - 4);
if (m.length() > 8) {
m = m.substring(0, 8) + "...";
}
if (i == 0) {
map.put("itemback", R.drawable.itemback);
} else if ((i % 2) == 0) {
map.put("itemback", R.drawable.itemback);
}
map.put("ItemImage", R.drawable.cover);
map.put("BookName", m);
map.put("ItemTitle", m);
map.put("ItemTitle1", "作者：未知");
map.put("LastImage", "本地导入");
map.put("path", file1.getPath());
map.put("com", "1");
listItem.add(map);
}
}
Collections.sort(listItem, new PinyinListComparator());
// if (adapter == null) {
adapter = new ShlefAdapter();
toolbarGrid.setAdapter(adapter);
// }
// adapter.notifyDataSetChanged();
}
最后效果图
阅读程序源码底部的功能是弹出了一个网格菜单,然后在菜单的每一个Item里面实现点击事件就行了,
说明:这些代码基于网上的蝌蚪听书神器改写
声明：本文由云豹科技转发自我可能在扯淡博客，如有侵权请联系作者删除
来自 “ ITPUB博客 ” ，链接：https://blog.itpub.net/69982461/viewspace-2844962/ ，如需转载，请注明出处，否则将追究法律责任。
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