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目录
android 多级下拉菜单实现教程
n级下拉菜单需要n个 NiceSpinner，我实现的是3个；
就是在一级的iten点击事件（addOnItemClickListener），进行数据的装载；但是存在问题，不能在子item进行展示；
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NiceSpinner 文字展示不全
NiceSpinner padding太多，文字展示不全
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mSpinner.setGravity(Gravity.CENTER);
居中这个问题可以直接设置在父layout
layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:orientation="horizontal">
<org.angmarch.views.NiceSpinner
android:id="@+id/nsp_way"
android:layout_margin="-9dp"
android:layout_width="0dp"
android:layout_weight="1"
android:layout_height="match_parent"
android:text="政府下发隐患"
android:textColor="@color/color_content_name" />
<org.angmarch.views.NiceSpinner
android:id="@+id/nsp_way_three"
android:layout_width="0dp"
android:layout_weight="1" android:layout_height="match_parent"
android:gravity="center|left"
android:text="三方机构"
android:textColor="@color/color_content_name" />
<org.angmarch.views.NiceSpinner
android:id="@+id/nsp_way_three_expert"
android:layout_width="0dp"
android:layout_weight="1" android:layout_height="match_parent"
android:gravity="center|left"
android:text="三方机构"
android:textColor="@color/color_content_name"
可以居中的
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NiceSpinner demo
NiceSpinner niceSpinner = (NiceSpinner) findViewById(R.id.nice_spinner);
niceSpinner.setTextColor(Color.GREEN);
LinkedList<String> data=new LinkedList<>(Arrays.asList("Zhang", "Phil", "@", "CSDN"));
niceSpinner.attachDataSource(data); //装载数据
niceSpinner.addOnItemClickListener(new AdapterView.OnItemClickListener() {//item监听事件
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long {
((TextView) view).setCompoundDrawablePadding(10);
((TextView) view).setCompoundDrawablesWithIntrinsicBounds(AppCompatResources.getDrawable(getApplicationContext(), R.drawable.ic_aa), null, null, null);
}
});
NiceSpinner加图标
Drawable icon=this.getResources().getDrawable(R.drawable.ic_aa);
icon.setBounds(0,0, 30,30);
mSpinner.setCompoundDrawables(icon,null,null,null);
可以在下拉框的选项（item）中加图片：
mSpinner.addOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long {
((TextView) view).setCompoundDrawablePadding(10);
((TextView) view).setCompoundDrawablesWithIntrinsicBounds(AppCompatResources.getDrawable(getApplicationContext(), R.drawable.ic_aa), null, null, null);
}
});
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目录
github:gitee.com/zhangjiqun/…
android greendao 3.3 工具类
android studio 4.2
gradle 版本：
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使用greendao：
compile 'org.greenrobot:greendao:3.3.0' // 添加库
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工具类：
根据自己的需求自己新建bean；
在代码后部分有activity ，里面进行单例模式调用；
package com.aa.db;
/**
* Created by Administrator on 2019/5/15 0015.
*/
public class DBManager {
private final static String dbName = "test_db";
private static DBManager mInstance;
private DaoMaster.DevOpenHelper openHelper;
private Context context;
public DBManager(Context context) {
this.context = context;
openHelper = new DaoMaster.DevOpenHelper(context, dbName, null);
}
/**
* 获取单例引用
*
* @param context
* @return
*/
public static DBManager getInstance(Context context) {
if (mInstance == null) {
synchronized (DBManager.class) {
if (mInstance == null) {
mInstance = new DBManager(context);
}
}
}
return mInstance;
}
private SQLiteDatabase getReadableDatabase() {
if (openHelper == null) {
openHelper = new DaoMaster.DevOpenHelper(context, dbName, null);
}
SQLiteDatabase db = openHelper.getReadableDatabase();
return db;
}
private SQLiteDatabase getWritableDatabase() {
if (openHelper == null) {
openHelper = new DaoMaster.DevOpenHelper(context, dbName, null);
}
SQLiteDatabase db = openHelper.getWritableDatabase();
return db;
}
/**
* 插入一条记录
*
* @param data_new
*/
public void insertUser(data_new data_new) {
DaoMaster daoMaster = new DaoMaster(getWritableDatabase());
DaoSession daoSession = daoMaster.newSession();
data_newDao userDao = daoSession.getData_newDao();
userDao.insertOrReplace(data_new);
}
public void insertUserList(List<data_new> BlackInfoCallMIssedBeans) {
if (BlackInfoCallMIssedBeans == null || BlackInfoCallMIssedBeans.isEmpty()) {
return;
}
DaoMaster daoMaster = new DaoMaster(getWritableDatabase());
DaoSession daoSession = daoMaster.newSession();
data_newDao userDao = daoSession.getData_newDao();
userDao.insertOrReplaceInTx(BlackInfoCallMIssedBeans);
}
public void deleteUser(data_new data_new) {
DaoMaster daoMaster = new DaoMaster(getWritableDatabase());
DaoSession daoSession = daoMaster.newSession();
data_newDao userDao = daoSession.getData_newDao();
userDao.queryBuilder()
.where(data_newDao.Properties.NUMBERING.eq(data_new.getNUMBERING()))
.buildDelete()
.executeDeleteWithoutDetachingEntities();
}
public void updateUser(data_new data_new) {
DaoMaster daoMaster = new DaoMaster(getWritableDatabase());
DaoSession daoSession = daoMaster.newSession();
data_newDao userDao = daoSession.getData_newDao();
userDao.update(data_new);
}
public List<data_new> queryUserList() {
DaoMaster daoMaster = new DaoMaster(getReadableDatabase());
DaoSession daoSession = daoMaster.newSession();
data_newDao userDao = daoSession.getData_newDao();
QueryBuilder<data_new> qb = userDao.queryBuilder();
// .orderDesc(data_newDao.Properties.Numbering);
List<data_new> list = qb.list();
return list;
}
/**
* 查询用户列表
*/
public List<data_new> queryUserList(String path) {
DaoMaster daoMaster = new DaoMaster(getReadableDatabase());
DaoSession daoSession = daoMaster.newSession();
data_newDao userDao = daoSession.getData_newDao();
QueryBuilder<data_new> qb = userDao.queryBuilder();
qb.where(data_newDao.Properties.NUMBERING.gt(path));
// .orderAsc(data_newDao.Properties.PhoneNumber);
List<data_new> list = qb.list();
return list;
}
//
public List<data_new> queryUser(String numbering) {
DaoMaster daoMaster = new DaoMaster(getReadableDatabase());
DaoSession daoSession = daoMaster.newSession();
data_newDao userDao = daoSession.getData_newDao();
QueryBuilder<data_new> qb = userDao.queryBuilder();
// qb.where(data_newDao.Properties.NUMBERING.gt(numbering));
qb.where(data_newDao.Properties.NUMBERING.eq(numbering));
// .orderAsc(data_newDao.Properties.PhoneNumber);
List<data_new> list = qb.list();
return list;
}
//查询已盘数量
public List<data_new> queryUserInventoried() {
DaoMaster daoMaster = new DaoMaster(getReadableDatabase());
DaoSession daoSession = daoMaster.newSession();
data_newDao userDao = daoSession.getData_newDao();
QueryBuilder<data_new> qb = userDao.queryBuilder();
// qb.where(data_newDao.Properties.NUMBERING.gt(numbering));
qb.where(data_newDao.Properties.Status.eq("已盘"));
// .orderAsc(data_newDao.Properties.PhoneNumber);
List<data_new> list = qb.list();
return list;
}
}
这是Activity，在这里进行调用：红色标记是调用
public class ActivityPropertyCheckActivity extends Activity implements View.OnClickListener {
private TextView tvAllQuantity;
private TextView tvcheckQuantity;
private int anIntAllAmount;//总数量
private int anIntCheckAmount;//已盘点数量
private String mAssertNameing;//资产编号 查询关键字
private EditText getEd1() {
return (EditText) findViewById(R.id.ed_1);
}
private EditText getEd2() {
return (EditText) findViewById(R.id.ed_2);
}
private EditText getEd3() {
return (EditText) findViewById(R.id.ed_3);
}
private EditText getEd4() {
return (EditText) findViewById(R.id.ed_4);
}
private EditText getEd5() {
return (EditText) findViewById(R.id.ed_5);
}
private EditText getEd6() {
return (EditText) findViewById(R.id.ed_6);
}
private EditText getEd7() {
return (EditText) findViewById(R.id.ed_7);
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_property_check);
//获得数据数目
initData();
findViewById(R.id.bt_back).setOnClickListener(this);
findViewById(R.id.bt_conrm_check).setOnClickListener(this);
tvcheckQuantity = (TextView) findViewById(R.id.tv_check_quantity);
tvAllQuantity = (TextView) findViewById(R.id.tv_all_quantity);
IntentFilter filter = new IntentFilter();
filter.addAction("com.android.server.scannerservice.broadcast");
this.registerReceiver(mResultReceiver, filter);
tvcheckQuantity.setText(anIntCheckAmount + "");
tvAllQuantity.setText(anIntAllAmount + "");
}
private void SearchData() {
data_new dataNew = new data_new();
dataNew.setNUMBERING(mAssertNameing);
if (DBManager.getInstance(ActivityPropertyCheckActivity.this).queryUser(mAssertNameing).size() == 0) {
Toast.makeText(this, "数据不存在，请重新扫描", Toast.LENGTH_SHORT).show();
} else {
//数据回显
dataNew = DBManager.getInstance(ActivityPropertyCheckActivity.this).queryUser(mAssertNameing).get(0);
getEd2().setText(dataNew.getUSER_OF_DEPARTMENT());
getEd3().setText(dataNew.getSPECIFICATIONA());
// getEd7().setText(dataNew.getINVENTORY_AMOUNT());
getEd5().setText(dataNew.getLOCATION());
getEd4().setText(dataNew.getUSER_OF_DEPARTMENT());
getEd6().setText(dataNew.getNOTE());
//盘点结果状更新;
//盘点结果状态修改 数据修改
if (Double.parseDouble(dataNew.getBOOK_AMOUNT()) < Double.parseDouble(dataNew.getINVENTORY_AMOUNT())) {
dataNew.setINVENTORY_RESULT("盘实");//根据要求进行更改
} else if (Double.parseDouble(dataNew.getBOOK_AMOUNT()) == Double.parseDouble(dataNew.getINVENTORY_AMOUNT())) {
dataNew.setINVENTORY_RESULT("盘实");//根据要求进行更改
} else if (Double.parseDouble(dataNew.getBOOK_AMOUNT()) > Double.parseDouble(dataNew.getINVENTORY_AMOUNT())) {
dataNew.setINVENTORY_RESULT("盘亏");//根据要求进行更改
}
}//其实green到进行了很多优化，增删改查使用合适的数据结构，这里的updata是根据id这是Long型的，是主键。主键必有的。
DBManager.getInstance(ActivityPropertyCheckActivity.this).updateUser(dataNew);//数据更新
}
private void initData() {
anIntAllAmount = (DBManager.getInstance(ActivityPropertyCheckActivity.this).queryUserList()).size();
anIntCheckAmount = DBManager.getInstance(ActivityPropertyCheckActivity.this).queryUserInventoried().size();
}
private BroadcastReceiver mResultReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
// TODO Auto-generated method stub
if (intent.getAction().equals("com.android.server.scannerservice.broadcast")) {
mAssertNameing = intent.getStringExtra("scannerdata");
getEd1().setText(mAssertNameing);
List<data_new> list = DBManager.getInstance(ActivityPropertyCheckActivity.this).queryUser(mAssertNameing);
//扫码后进行资产数量修改
// DBManager.getInstance(ActivityPropertyCheckActivity.this).modicationInventoryResult(list.get(0));
list.get(0).setINVENTORY_AMOUNT(Double.parseDouble(list.get(0).getINVENTORY_AMOUNT()) + 1 + "");
list.get(0).setStatus("已盘");
DBManager.getInstance(ActivityPropertyCheckActivity.this).updateUser(list.get(0));
if (mAssertNameing != null) {
SearchData();
}
refreshData();
}
}
};
@Override
public void onClick(View view) {
switch (view.getId()) {
case R.id.bt_back:
//TODO implement
finish();
break;
case R.id.bt_conrm_check:
refreshData();
//TODO implement
break;
}
}
/*刷新盘点数目和未盘点数目*/
private void refreshData() {
initData();
anIntCheckAmount = DBManager.getInstance(ActivityPropertyCheckActivity.this).queryUserInventoried().size();
tvAllQuantity.setText(anIntAllAmount + "");
tvcheckQuantity.setText(anIntCheckAmount + "");
}
@Override
protected void onDestroy() {
super.onDestroy();
if (mResultReceiver != null) {
this.unregisterReceiver(mResultReceiver);
}
}
}
SQLiteSpy 工具不能查询数据库；
新版的greendao生成3个文件，我们需要从as中复制带同一目录；
把db文件拖拽进SQLiteSpy就能显示；
db文件目录：
data/data /包名/
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