android 将数据存入SQLiteOpenHelper 用ListView展示出来 图片使用ViewPager做出滑块效果

主页面

public class AddressActivity extends AppCompatActivity {
    
    

    private TextView mAddressAdd;
    private ListView mAddressLv;
    private AddressDB addressDB;
    private SQLiteDatabase writableDatabase;
    private Cursor cursor;
    private ArrayList<AddressBean> mList = new ArrayList<>();
    private String name;
    private String phone;
    private MyAdaper myAdaper;
    private int img;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
    
    
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_address);
        initView();
        addressDB = new AddressDB(getApplicationContext());
        getData();
    }

    private void getData() {
    
    
        writableDatabase = addressDB.getWritableDatabase();
        cursor = writableDatabase.query("address", null, null, null, null, null, null);
        int count = cursor.getCount();
        if (count == 0) {
    
    
            Toast.makeText(getApplicationContext(), "暂无联系人", Toast.LENGTH_LONG).show();
            return;
        }
        if (cursor.moveToFirst()) {
    
    
            do {
    
    
                img = cursor.getInt(cursor.getColumnIndex("img"));
                name = cursor.getString(cursor.getColumnIndex("name"));
                phone = cursor.getString(cursor.getColumnIndex("phone"));
                mList.add(new AddressBean(img,name,phone));
            } while (cursor.moveToNext());
        }
        changer();
    }

    private void changer() {
    
    
        if (myAdaper == null) {
    
    
            myAdaper = new MyAdaper();
            mAddressLv.setAdapter(myAdaper);
        } else {
    
    
            myAdaper.notifyDataSetChanged();
        }
    }

    private void initView() {
    
    
        mAddressAdd = (TextView) findViewById(R.id.address_add);
        mAddressLv = (ListView) findViewById(R.id.address_lv);
        mAddressAdd.setOnClickListener(new View.OnClickListener() {
    
    
            @Override
            public void onClick(View v) {
    
    
                Intent intent = new Intent(AddressActivity.this, AddressAddActivity.class);
                startActivity(intent);
                finish();
            }
        });
    }

    class MyAdaper extends BaseAdapter {
    
    

        @Override
        public int getCount() {
    
    
            return mList.size();
        }

        @Override
        public Object getItem(int position) {
    
    
            return mList.get(position);
        }

        @Override
        public long getItemId(int position) {
    
    
            return position;
        }

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
    
    
            ViewHolder viewHolder = null;
            if (convertView == null) {
    
    
                viewHolder = new ViewHolder();
                convertView = LayoutInflater.from(getApplicationContext()).inflate(R.layout.item_address, null);
                viewHolder.mItemAddressImg = (ImageView) convertView.findViewById(R.id.item_address_img);
                viewHolder.mItemAddressName = (TextView) convertView.findViewById(R.id.item_address_name);
                viewHolder.mItemAddressPhone = (TextView) convertView.findViewById(R.id.item_address_phone);
                convertView.setTag(viewHolder);
            } else {
    
    
                viewHolder = (ViewHolder) convertView.getTag();
            }
            AddressBean addressBean = mList.get(position);
            viewHolder.mItemAddressImg.setImageResource(addressBean.getImg());
            viewHolder.mItemAddressName.setText(addressBean.getName());
            viewHolder.mItemAddressPhone.setText(addressBean.getPhone());
            return convertView;
        }

        class ViewHolder {
    
    
            private ImageView mItemAddressImg;
            private TextView mItemAddressName;
            private TextView mItemAddressPhone;
        }
    }
}

布局

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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:orientation="vertical"
    tools:context=".Activity.AddressActivity">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="#000"
        android:gravity="center"
        android:orientation="horizontal">

        <TextView
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="15"
            android:gravity="center"
            android:text="通讯录"
            android:textColor="#fff"
            android:textSize="30sp" />

        <TextView
            android:id="@+id/address_add"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:gravity="right"
            android:text="添加"
            android:textColor="#fff"
            android:textSize="30sp" />
    </LinearLayout>

    <ListView
        android:id="@+id/address_lv"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />
</LinearLayout>

添加页面

public class AddressAddActivity extends AppCompatActivity {
    
    

    private TextView mAddressAddRe;
    private EditText mAddressAddName;
    private EditText mAddressAddPhone;
    private ImageView mAddressAddImg;
    private Button mAddressAddNone;
    private Button mAddressAddAdd;
    private AddressDB addressDB;
    private SQLiteDatabase writableDatabase;
    private ViewPager mAddressAddViewPager;
    private View view1, view2, view3;
    private List<View> viewList = new ArrayList<>();
    private int img;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
    
    
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_address_add);
        initView();
        addressDB = new AddressDB(getApplicationContext());
        getImg();
    }

    private void getImg() {
    
    
        LayoutInflater inflater = getLayoutInflater();
        view1 = inflater.inflate(R.layout.item_address_add01, null);
        view2 = inflater.inflate(R.layout.item_address_add02, null);
        view3 = inflater.inflate(R.layout.item_address_add03, null);
        viewList.add(view1);
        viewList.add(view2);
        viewList.add(view3);
        PagerAdapter pagerAdapter = new PagerAdapter() {
    
    
            //返回要滑动的VIew的个数
            @Override
            public int getCount() {
    
    
                return viewList.size();
            }

            //视图View和键对象 object是否一致
            @Override
            public boolean isViewFromObject(@NonNull View view, @NonNull Object object) {
    
    
                return view == object;
            }

            //从当前container中删除指定位置（position）的View;
            @Override
            public void destroyItem(@NonNull ViewGroup container, int position, @NonNull Object object) {
    
    
                container.removeView(viewList.get(position));
            }

            //初始化item,做了两件事，第一：将当前视图添加到container中，第二：返回当前View作为键
            @NonNull
            @Override
            public Object instantiateItem(@NonNull ViewGroup container, int position) {
    
    
                container.addView(viewList.get(position));
                return viewList.get(position);
            }
        };
        mAddressAddViewPager.setAdapter(pagerAdapter);
        mAddressAddViewPager.addOnPageChangeListener(new ViewPager.OnPageChangeListener() {
    
    
            @Override
            public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
    
    

            }

            @Override
            public void onPageSelected(int position) {
    
    
                switch (position) {
    
    
                    case 0: {
    
    
                        img = R.drawable.img2;
                        Log.e("TAG", img + "");
                        break;
                    }
                    case 1: {
    
    
                        img = R.drawable.img3;
                        Log.e("TAG", img + "");
                        break;
                    }
                    case 2: {
    
    
                        img = R.drawable.img4;
                        Log.e("TAG", img + "");
                        break;
                    }
                }
            }

            @Override
            public void onPageScrollStateChanged(int state) {
    
    

            }
        });
    }

    private void initView() {
    
    
        mAddressAddRe = (TextView) findViewById(R.id.address_add_re);
        mAddressAddName = (EditText) findViewById(R.id.address_add_name);
        mAddressAddPhone = (EditText) findViewById(R.id.address_add_phone);
        mAddressAddViewPager = (ViewPager) findViewById(R.id.address_add_viewPager);
        mAddressAddNone = (Button) findViewById(R.id.address_add_none);
        mAddressAddAdd = (Button) findViewById(R.id.address_add_add);
        mAddressAddRe.setOnClickListener(new View.OnClickListener() {
    
    
            @Override
            public void onClick(View v) {
    
    
                Intent intent = new Intent(AddressAddActivity.this, AddressActivity.class);
                startActivity(intent);
                finish();
            }
        });
        mAddressAddAdd.setOnClickListener(new View.OnClickListener() {
    
    
            @Override
            public void onClick(View v) {
    
    
                add();
            }
        });
    }

    private void add() {
    
    
        String name = mAddressAddName.getText().toString().trim();
        String phone = mAddressAddPhone.getText().toString().trim();
        if (TextUtils.isEmpty(name)) {
    
    
            Toast.makeText(getApplicationContext(), "请输入姓名", Toast.LENGTH_SHORT).show();
            return;
        }
        if (TextUtils.isEmpty(phone)) {
    
    
            Toast.makeText(getApplicationContext(), "请输入电话号码", Toast.LENGTH_SHORT).show();
            return;
        }
        writableDatabase = addressDB.getWritableDatabase();
        ContentValues contentValues = new ContentValues();
        if (img == 0){
    
    
            img = R.drawable.img2;
        }
        contentValues.put("img", img);
        contentValues.put("name", name);
        contentValues.put("phone", phone);
        writableDatabase.insert("address", null, contentValues);
        Intent intent = new Intent(AddressAddActivity.this, AddressActivity.class);
        startActivity(intent);
        finish();
    }
}

布局

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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="#f1f1f1"
    android:gravity="center"
    android:orientation="vertical"
    tools:context=".Activity.AddressAddActivity">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="#000"
        android:orientation="horizontal">

        <TextView
            android:id="@+id/address_add_re"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="＜返回"
            android:textColor="#fff"
            android:textSize="30sp" />
    </LinearLayout>

    <LinearLayout
        android:layout_width="500dp"
        android:layout_height="match_parent"
        android:layout_marginTop="10dp"
        android:orientation="vertical">

        <EditText
            android:id="@+id/address_add_name"
            android:layout_width="match_parent"
            android:layout_height="50dp"
            android:layout_marginBottom="20dp"
            android:background="#fff"
            android:hint="请输入姓名"
            android:lines="1" />

        <EditText
            android:id="@+id/address_add_phone"
            android:layout_width="match_parent"
            android:layout_height="50dp"
            android:layout_marginBottom="20dp"
            android:background="#fff"
            android:hint="请输入电话号码"
            android:inputType="number"
            android:lines="1" />

        <androidx.viewpager.widget.ViewPager
            android:id="@+id/address_add_viewPager"
            android:layout_width="100dp"
            android:layout_height="100dp"
            android:layout_gravity="center"
            android:layout_marginBottom="20dp"></androidx.viewpager.widget.ViewPager>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:gravity="center"
            android:orientation="horizontal">

            <Button
                android:id="@+id/address_add_none"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="重置" />

            <Button
                android:id="@+id/address_add_add"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="添加" />
        </LinearLayout>
    </LinearLayout>
</LinearLayout>

还需要三个子布局
这是第一个，其他两个将图片资源改掉就行

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_gravity="center"
    android:orientation="vertical">

    <ImageView
        android:id="@+id/img1"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:src="@drawable/img2"></ImageView>
</LinearLayout>

SQLiteOpenHelper

public class AddressDB extends SQLiteOpenHelper {
    
    

    String sql = "create table address(id integer primary key autoincrement,img integer,name varchar(20),phone varchar(20))";

    public AddressDB(@Nullable Context context) {
    
    
        super(context, "address.db", null, 1);
    }

    @Override
    public void onCreate(SQLiteDatabase db) {
    
    
        db.execSQL(sql);
    }

    @Override
    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
    
    

    }

Bean类

public class AddressBean {
    
    
    private int img;
    private String name;
    private String phone;

    public AddressBean(int img, String name, String phone) {
    
    
        this.img = img;
        this.name = name;
        this.phone = phone;
    }

    public int getImg() {
    
    
        return img;
    }

    public void setImg(int img) {
    
    
        this.img = img;
    }

    public String getName() {
    
    
        return name;
    }

    public void setName(String name) {
    
    
        this.name = name;
    }

    public String getPhone() {
    
    
        return phone;
    }

    public void setPhone(String phone) {
    
    
        this.phone = phone;
    }
}