GreenDao Application类 和 数据库管理类–数据库框架(保险起见 原始数据库需要看一下)

添加依赖

Project build.gradle：

classpath 'org.greenrobot:greendao-gradle-plugin:3.2.2'

app build.gradle：

a

pply plugin: 'org.greenrobot.greendao'greendao {    //数据库的schema版本，也可以理解为数据库版本号    schemaVersion 1    //设置DaoMaster、DaoSession、Dao包名，也就是要放置这些类的包的全路径。    daoPackage 'com.example.thtf.kj.dao'    //设置DaoMaster、DaoSession、Dao目录    targetGenDir 'src/main/java'}implementation 'org.greenrobot:greendao:3.2.2'

实体类

建entity包放实体类

 @Entitypublic class Car {    @Id(autoincrement = true)    Long id;    String brand;    int money;    }

Ctrl+F9后

@Entitypublic class Car {    @Id(autoincrement = true)    Long id;    String brand;    int money;    @Generated(hash = 840096487)    public Car(Long id, String brand, int money) {        this.id = id;        this.brand = brand;        this.money = money;    }    @Generated(hash = 625572433)    public Car() {    }    public Long getId() {        return this.id;    }    public void setId(Long id) {        this.id = id;    }    public String getBrand() {        return this.brand;    }    public void setBrand(String brand) {        this.brand = brand;    }    public int getMoney() {        return this.money;    }    public void setMoney(int money) {        this.money = money;    }    }

并多出三个类

项目结构

编写MyApplication类

public class MyApplication extends Application {    private static Context mContext;    @Override    public void onCreate() {        super.onCreate();        mContext = getApplicationContext();        GreenDaoManager.getInstance();    }    public static Context getContext() {        return mContext;    }}

在项目清单文件中添加

android:name=".MyApplication"注册MyApplication

编写GreenDaoManager数据库管理类

public class GreenDaoManager {    private static GreenDaoManager mInstance;    private DaoMaster mDaoMaster;    private DaoSession mDaoSession;    public GreenDaoManager() {        DaoMaster.DevOpenHelper devOpenHelper = new DaoMaster.DevOpenHelper(MyApplication.getContext(), "car-db", null);        DaoMaster daoMaster = new DaoMaster(devOpenHelper.getWritableDatabase());        mDaoSession = daoMaster.newSession();    }    public static GreenDaoManager getInstance() {        if (mInstance == null) {            mInstance = new GreenDaoManager();        }        return mInstance;    }    public DaoMaster getDaoMaster() {        return mDaoMaster;    }    public DaoSession getDaoSession() {        return mDaoSession;    }    public DaoSession getNewDaoSession() {        mDaoSession = mDaoMaster.newSession();        return mDaoSession;    }}大功告成

AlertDialog AlertDialog.Builder–弹出框

默认弹出框

AlertDialog.Builder builder = new AlertDialog.Builder(getContext());builder.setTitle("这是弹出框")        .setMessage("这是内容")        .setPositiveButton("确认", new DialogInterface.OnClickListener() {            @Override            public void onClick(DialogInterface dialog, int which) {                Toast.makeText(getContext(), which + "", Toast.LENGTH_SHORT).show();            }        }).setNeutralButton("忽略", new DialogInterface.OnClickListener() {    @Override    public void onClick(DialogInterface dialog, int which) {        Toast.makeText(getContext(), which + "", Toast.LENGTH_SHORT).show();    }}).setNegativeButton("取消", new DialogInterface.OnClickListener() {    @Override    public void onClick(DialogInterface dialog, int which) {        Toast.makeText(getContext(), which + "", Toast.LENGTH_SHORT).show();    }}).create().show();

单选弹出框

1

final String[] a = new String[]{        "C",        "D",};AlertDialog.Builder builder = new AlertDialog.Builder(getContext());builder.setSingleChoiceItems(a, 1, new DialogInterface.OnClickListener() {    @Override    public void onClick(DialogInterface dialog, int which) {        Toast.makeText(getContext(), a[which] + "", Toast.LENGTH_SHORT).show();    }}).show();

2

final String[] a = new String[]{        "A",        "B",}; AlertDialog.Builder builder = new AlertDialog.Builder(getContext());builder.setItems(a, new DialogInterface.OnClickListener() {    @Override    public void onClick(DialogInterface dialog, int which) {        Toast.makeText(getContext(), a[which] + "", Toast.LENGTH_SHORT).show();    }}).show();

多选弹出框

final String[] dessert = new String[]{"抹茶千层", "芒果拿破仑", "草莓雪媚娘", "蓝莓慕斯"};boolean[] begin = new boolean[]{false, false, false, false};AlertDialog.Builder alertDialog = new AlertDialog.Builder(getContext());alertDialog.setMultiChoiceItems(dessert, begin, new DialogInterface.OnMultiChoiceClickListener() {    @Override    public void onClick(DialogInterface dialog, int which, boolean isChecked) {        Toast.makeText(getContext(), dessert[which], Toast.LENGTH_SHORT).show();    }}).setPositiveButton("确认", new DialogInterface.OnClickListener() {    @Override    public void onClick(DialogInterface dialog, int which) {        Toast.makeText(getContext(), "真好吃！", Toast.LENGTH_SHORT).show();    }}).setNegativeButton("取消", new DialogInterface.OnClickListener() {    @Override    public void onClick(DialogInterface dialog, int which) {        Toast.makeText(getContext(), "真不好玩！", Toast.LENGTH_SHORT).show();    }}).show();

ViewPage 的监听 Fragment–碎片以及小圆点

布局XMl

<?xml version="1.0" encoding="utf-8"?>                                    

Fragment适配器

public class adapter extends FragmentPagerAdapter {    ArrayList fragments;    public adapter(FragmentManager fm, ArrayList fragments) {        super(fm);        this.fragments = fragments;    }    @Override    public Fragment getItem(int position) {        return fragments.get(position);    }    @Override    public int getCount() {        return fragments.size();    }}

加入Fragment

ArrayList fragments = new ArrayList<>();fragments.add(new page1());fragments.add(new page2());fragments.add(new page3());vp.setAdapter(new adapter(getFragmentManager(), fragments));

滑动viewpage小圆点变化

vp.addOnPageChangeListener(new ViewPager.OnPageChangeListener() {    @Override    public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {    }    @Override    public void onPageSelected(int position) {        for (int i = 0; i < ll.getChildCount(); i++) {            if (i == position) {                ll.getChildAt(i).setBackgroundResource(R.drawable.xld);            } else {                ll.getChildAt(i).setBackgroundResource(R.drawable.xbd);            }        }    }    @Override    public void onPageScrollStateChanged(int state) {    }});

点击小圆点Fragment viewpage发生变化

@Overridepublic void onClick(View v) {    switch (v.getId()) {        case R.id.t1:            vp.setCurrentItem(0);            break;        case R.id.t2:            vp.setCurrentItem(1);            break;        case R.id.t3:            vp.setCurrentItem(2);            break;    }}

TableLayout–表格布局与传数据进表格

Xml

传数据进表

private TableLayout tablelayout = (TableLayout) view.findViewById(R.id.tablelayout);TableRow row;for(int n = 0; n < 5;n++){ //行数    ArrayList arrayList = new ArrayList();    arrayList.add(n);    arrayList.add("张"+n);    arrayList.add((int)(Math.random()*100)%2 == 0 ? "男":"女");    arrayList.add((int)(Math.random()*30)) ;    row = new TableRow(getContext());    for(int m = 0;m < arrayList.size();m++){        TextView textView = new TextView(getContext());        textView.setText(arrayList.get(m)+"");        textView.setGravity(Gravity.CENTER);        textView.setBackgroundResource(R.drawable.black_kuang);        row.addView(textView); //添加一行中的一格    }    tablelayout.addView(row);//添加一行}

Handler Runnable–线程与更新UI

主体代码

private Handler mHandler = new Handler() {    @Override    public void handleMessage(Message msg) {        super.handleMessage(msg);        int what = msg.what;        switch (what) {            case 0:        //更新UI                break;        }    }};private Runnable mRunnable = new Runnable() {    @Override    public void run() {        //想要做的事        mHandler.sendEmptyMessage(0);    }}; 

开启线程

new Thread(mRunnable).start();

关闭线程

mHandler.removeCallbacks(mRunnable);

SimpleDateFormat–获得本地时间 年月日时分秒星期的格式

主体代码

//规定格式SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy年MM月dd天 HH:mm:ss E");//获取本地时间Date date = new Date(System.currentTimeMillis());//显示时间simpleDateFormat.format(date);

SharedPreferences.Editor–写入本地

Object o = getSharedPreferences("data", 0).edit();((SharedPreferences.Editor) o).putString("a", "a");((SharedPreferences.Editor) o).commit();

getSharedPreferences()–获取本地缓存

Object o = getSharedPreferences("data", 0);((SharedPreferences) o).getString("a", "");

VideoView MediaController --视频组件与进度条组件的搭配

MediaController mediaController = new MediaController(getContext());vd.setVideoURI(Uri.parse("android.resource://" + getContext().getPackageName() + "/" + R.raw.v1));vd.setMediaController(mediaController); setVideoURI();导入视频start()播放pause()暂停

获取网页代码路径 与视频文件路径

网页代码路径

1.新建assets目录2.在assets目录中创建web（名字可以自己起）文件夹（据说如果不创建这层目录就无法拿到assets中的文件）webView.loadUrl("file:///android_asset/web/2.html");

视频文件路径

Uri uri = Uri.parse("android.resource://" + getPackageName() + "/raw/" + R.raw.test_video);mVideoView.setVideoURI(uri);

LayoutParams --设置View的大小

LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(160, 160);

Spinner --下拉框的适配和监听

适配

final String[] strings = new String[]{        "A", "B", "C", "D"};ArrayAdapter adapter=new ArrayAdapter(getContext(),android.R.layout.simple_expandable_list_item_1,strings);sp.setAdapter(adapter);

监听

sp.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {    @Override    public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {        Log.e("", ":"+strings[position] );    }    @Override    public void onNothingSelected(AdapterView<?> parent) {    }});

Switch --开关的适配和监听

xml文件

    android:track="@drawable/b2" />

监听

sw.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {    @Override    public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {        //isChecked 为开关    }});

ExtendableListView --列表视图的适配

Xml

父视图group_item

<?xml version="1.0" encoding="utf-8"?>    

子视图 child_item

<?xml version="1.0" encoding="utf-8"?>        

适配器

//为ExpandableListView自定义适配器class MyExpandableListView extends BaseExpandableListAdapter {    //返回一级列表的个数    @Override    public int getGroupCount() {        return groups.length;    }    //返回每个二级列表的个数    @Override    public int getChildrenCount(int groupPosition) { //参数groupPosition表示第几个一级列表        Log.d("smyhvae", "-->" + groupPosition);        return childs[groupPosition].length;    }    //返回一级列表的单个item（返回的是对象）    @Override    public Object getGroup(int groupPosition) {        return groups[groupPosition];    }    //返回二级列表中的单个item（返回的是对象）    @Override    public Object getChild(int groupPosition, int childPosition) {        return childs[groupPosition][childPosition]; //不要误写成groups[groupPosition][childPosition]    }    @Override    public long getGroupId(int groupPosition) {        return groupPosition;    }    @Override    public long getChildId(int groupPosition, int childPosition) {        return childPosition;    }    //每个item的id是否是固定？一般为true    @Override    public boolean hasStableIds() {        return true;    }    //【重要】填充一级列表    @Override    public View getGroupView(int groupPosition, boolean isExpanded, View convertView, ViewGroup parent) {        if (convertView == null) {            convertView = getLayoutInflater().inflate(R.layout.group_item, null);        } else {        }        TextView tv_group = (TextView) convertView.findViewById(R.id.tv_group);        tv_group.setText(groups[groupPosition]);        return convertView;    }    //【重要】填充二级列表    @Override    public View getChildView(int groupPosition, int childPosition, boolean isLastChild, View convertView, ViewGroup parent) {        if (convertView == null) {            convertView = getLayoutInflater().inflate(R.layout.child_item, null);        }        ImageView iv_child = (ImageView) convertView.findViewById(R.id.iv_child);        TextView tv_child = (TextView) convertView.findViewById(R.id.tv_child);        //iv_child.setImageResource(resId);        tv_child.setText(childs[groupPosition][childPosition]);        return convertView;    }    //二级列表中的item是否能够被选中？可以改为true    @Override    public boolean isChildSelectable(int groupPosition, int childPosition) {        return true;    }}

适配

//Model：定义的数据private String[] groups = {"A", "B", "C"};//注意，字符数组不要写成{{"A1,A2,A3,A4"}, {"B1,B2,B3,B4，B5"}, {"C1,C2,C3,C4"}}private String[][] childs = {{"A1", "A2", "A3", "A4"}, {"A1", "A2", "A3", "B4"}, {"A1", "A2", "A3", "C4"}};expandable_list_view_id.setAdapter(new MyExpandableListView());

监听

//父监听expandable_list_view_id.setOnGroupClickListener(new ExpandableListView.OnGroupClickListener() {    @Override    public boolean onGroupClick(ExpandableListView parent, View v, int groupPosition, long id) {        Toast.makeText(getContext(),groups[groupPosition],Toast.LENGTH_SHORT).show();        return false;    }});

//子监听expandable_list_view_id.setOnChildClickListener(new ExpandableListView.OnChildClickListener() {    @Override    public boolean onChildClick(ExpandableListView parent, View v, int groupPosition, int childPosition, long id) {        Toast.makeText(getContext(),childs[groupPosition][childPosition],Toast.LENGTH_SHORT).show();        return false;    }});

Timer-TimerTask定时器

1.隔几秒运行一次Int i=1;Timer timer=new Timer();TimerTask timerTask=new TimerTask() {   @Override   public void run() {      Log.e("a", "run: "+i++ );   }};timer.schedule(timerTask,1000);1.timer.schedule(task, time);　　// time为Date类型：在指定时间执行一次。2.timer.schedule(task, firstTime, period);　　// firstTime为Date类型,period为long。从firstTime时刻开始，每隔period毫秒执行一次。3.timer.schedule(task, delay)　　// delay 为long类型：从现在起过delay毫秒执行一次4.timer.schedule(task, delay, period)　　// delay为long,period为long：从现在起过delay毫秒以后，每隔period。毫秒执行一次。timer.schedule(timerTask,1000,100);

Handler定时器

mHandler.postDelayed(mRunnable,1000);

NotificationManager Notification–通知栏的使用

通知栏的方法private void notice(Context context, String title, String content, int icon, int i) {    NotificationManager manager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {        NotificationChannel channel = new NotificationChannel("1", "11", NotificationManager.IMPORTANCE_LOW);        manager.createNotificationChannel(channel);        Notification notification = new Notification.Builder(context, "1")                .setContentTitle(title)                .setContentText(content)                .setSmallIcon(icon)                .build();        manager.notify(i, notification);    } else {        Notification.Builder notification = new Notification.Builder(context)                .setContentTitle(title)                .setContentText(content)                .setSmallIcon(icon);        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {            manager.notify(i, notification.build());        }    }}

shape --简单的图形框绘画

<?xml version="1.0" encoding="utf-8"?>                

<?xml version="1.0" encoding="utf-8"?>                

<?xml version="1.0" encoding="utf-8"?>                 

<?xml version="1.0" encoding="utf-8"?>            

CalendarView --日历控件 监听

Xml

监听

Cal.setOnDateChangeListener(new CalendarView.OnDateChangeListener() {    @Override    public void onSelectedDayChange(@NonNull CalendarView view, int year, int month, int dayOfMonth) {        String str=year+"年"+month+"月"+dayOfMonth+"日";        Toast.makeText(getContext(),str+"",Toast.LENGTH_SHORT).show();    }});

include ViewStub --包含视图和延时包含视图的使用

include

ViewStub

Xml

延时加载

View view = (View) findViewById(R.id.viewstub);if (view != null) {    view.setVisibility(View.VISIBLE);} else {    setTitle("加载子窗口");}

组件显示与隐藏

显示

view.setVisibility(View.VISIBLE);

隐藏

view.setVisibility(View.GONE);

导入包的方法

App-libs添加包右击 add library

Fragment中使用getFragmentManager()嵌入布局 在activity中

getSupportFragmentManager().beginTransaction().replace(R.id.maincontent,new Fragment_2()).commit();//R.id.maincontent 为需要嵌入的布局id// new Fragment_2() 为Fragment

SimpleAdapter ArrayAdapter 的使用

ArrayAdapter

String[] a = new String[]{        "A", "B"};ArrayAdapter stringArrayAdapter=new ArrayAdapter(this,android.R.layout.simple_expandable_list_item_1,a);

SimpleAdapter

final String[] actionTexts = new String[]{        getString(R.string.g1),        getString(R.string.g2),        getString(R.string.g3),        getString(R.string.g4),        getString(R.string.g5),        getString(R.string.g6),        getString(R.string.g7),        getString(R.string.g8),        getString(R.string.g9),        getString(R.string.g10),        getString(R.string.res_left_chuanyi),        getString(R.string.res_left_exit)};int[] actionImages = new int[]{        R.drawable.btn_l_star,        R.drawable.btn_l_book,        R.drawable.btn_l_arrows,        R.drawable.btn_l_grid,        R.drawable.btn_l_speech_3,        R.drawable.btn_l_twitter,        R.drawable.btn_l_skype,        R.drawable.btn_l_windows,        R.drawable.btn_l_slideshow,        R.drawable.btn_l_suitcase,        R.drawable.btn_l_target,        R.drawable.btn_l_download};actionItems = new ArrayList>();actionAdapter = new SimpleAdapter(getApplicationContext(), actionItems, R.layout.left_list_fragment_item,        new String[]{"action_icon", "action_name"},        new int[]{R.id.recharge_method_icon, R.id.recharge_method_name});for (int i = 0; i < actionImages.length; ++i) {    HashMap item1 = new HashMap();    item1.put("action_icon", actionImages[i]);    item1.put("action_name", actionTexts[i]);    actionItems.add(item1);}listView.setAdapter(actionAdapter);

ProgressBar的使用

Xml

Style

默认圆形?android:attr/progressBarStyleHorizontal" 条状

属性

progress.setMax(1000); //设置最大值progress.setProgress(100); //设置第一值progress.setSecondaryProgress(500);//设置第二值

退出程序

finish();

还有一部分没有整理

MPAndroidChart–画图

EChart–画图

Animation–出入场动画的使用

等等

配张图自己感受

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