用SQLite数据库存储用户信息及动画技术和相册（Android）

Posted 2021-07-26 木头㉿

一、项目介绍

1、SQLite数据库存储用户信息

SQLite数据库存储用户信息这里我用的是SQLiteDatabase类，当你输入用户名字和电话后，app界面点击登录会将其保存到数据库中，界面下方会显示也输入的文本内容，其保存在news.inf中，点击Database Innspector选项可查看已输入的用户信息（在这里是两个布局代码，除主界面之外，还有一个是用来承载输入信息）

2、动画技术

其本项目使用了补间动画，补间动画就是只须指定开始，结束的“关键帧”，而变化的其他帧由系统来计算，不必一帧一帧地去定义。
设计布局文件，按垂直线性布局，并放置4个按钮组件（Alpha、Scale、Rotate、Translate）和一个图像显示组件（ImageView）。

3、相册功能

修改GridView的图片查看功能，用户该图片一张图片后，界面切换成大图，并设置了淡入淡出的动画效果。可以使用Intent和Activity，传递用户选择的图片信息，在下一个页面展示。

二、实现效果

1、

2、

3、

三、源代码

以下是三个实现的逻辑代码，布局代码过于简单，套用即可，有需要者加我V：mutou88848

1、mian.java

package com.example.text;
import android.app.Activity;
import android.content.Intent;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteException;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.CursorAdapter;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.SimpleCursorAdapter;


public class Main extends Activity
{
    SQLiteDatabase db;
    Button bn = null;
    ListView listView;
    Button shiqin,xiangce;

    @Override
    public void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.phone);
        db = SQLiteDatabase.openOrCreateDatabase(
                this.getFilesDir().toString()
                        + "/my.db3", null);
        listView = (ListView) findViewById(R.id.show);
        bn = (Button) findViewById(R.id.submit);
        shiqin = (Button) findViewById(R.id.shiqin);
        xiangce = (Button) findViewById(R.id.xiangce);
        shiqin.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(Main.this, TwAnimationActivity.class);
                startActivity(intent);
            }
        });
        xiangce.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(Main.this, com.example.text.MainActivity.class);
                startActivity(intent);
            }
        });
        bn.setOnClickListener(new OnClickListener()
        {

            @Override
            public void onClick(View source)
            {

                String name = ((EditText) findViewById(
                        R.id.name)).getText().toString();
                String tel = ((EditText) findViewById(R.id.tel))
                        .getText().toString();
                try
                {
                    insertData(db, name, tel);
                    Cursor cursor = db.rawQuery("select * from news_inf"
                            , null);
                    inflateList(cursor);
                }
                catch (SQLiteException se)
                {
                    db.execSQL("create table news_inf(_id integer"
                            + " primary key autoincrement,"
                            + " news_name varchar(50),"
                            + " news_tel varchar(255))");
                    insertData(db, name, tel);
                    Cursor cursor = db.rawQuery("select * from news_inf"
                            , null);
                    inflateList(cursor);
                }
            }
        });
    }

    private void insertData(SQLiteDatabase db
            , String name, String tel)
    {

        db.execSQL("insert into news_inf values(null , ? , ?)"
                , new String[] {name, tel });
    }
    private void inflateList(Cursor cursor)
    {
        SimpleCursorAdapter adapter = new SimpleCursorAdapter(
                Main.this,
                R.layout.line, cursor,
                new String[] { "news_name", "news_tel" }
                , new int[] {R.id.my_name, R.id.my_tel },
                CursorAdapter.FLAG_REGISTER_CONTENT_OBSERVER);
        listView.setAdapter(adapter);
    }
    @Override
    public void onDestroy()
    {
        super.onDestroy();
        if (db != null && db.isOpen())
        {
            db.close();
        }
    }
}

2、TwAnimationActivity.java

package com.example.text;


import android.os.Bundle;
import android.view.View;
import android.view.animation.AlphaAnimation;
import android.view.animation.Animation;
import android.view.animation.AnimationSet;
import android.view.animation.RotateAnimation;
import android.view.animation.ScaleAnimation;
import android.view.animation.TranslateAnimation;
import android.widget.Button;
import android.widget.ImageView;
import android.view.View.OnClickListener;

import androidx.appcompat.app.AppCompatActivity;


public class TwAnimationActivity extends AppCompatActivity {
    private Button rotateButton = null;
    private Button scaleButton = null;
    private Button alphaButton = null;
    private Button translateButton = null;
    private ImageView image = null;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        rotateButton = (Button)findViewById(R.id.rotateButton);
        scaleButton = (Button)findViewById(R.id.scaleButton);
        alphaButton = (Button)findViewById(R.id.alphaButton);
        translateButton = (Button)findViewById(R.id.translateButton);
        image = (ImageView)findViewById(R.id.image);
        rotateButton.setOnClickListener(new RotateButtonListener());
        scaleButton.setOnClickListener(new ScaleButtonListener());
        alphaButton.setOnClickListener(new AlphaButtonListener());
        translateButton.setOnClickListener(new TranslateButtonListener());
    }
    class RotateButtonListener implements OnClickListener{
        public void onClick(View v) {
            AnimationSet animationSet = new AnimationSet(true);
            RotateAnimation rotateAnimation = new RotateAnimation(0, 360,
                    Animation.RELATIVE_TO_SELF,  0.5f,
                    Animation.RELATIVE_TO_SELF,  0.5f);
            rotateAnimation.setDuration(1000);
            animationSet.addAnimation(rotateAnimation);
            image.startAnimation(animationSet);
        }
    }
    class ScaleButtonListener implements OnClickListener{
        public void onClick(View v) {
            AnimationSet animationSet = new AnimationSet(true);
            ScaleAnimation scaleAnimation = new ScaleAnimation(
                    0,   0.1f,  0,  0.1f, Animation.RELATIVE_TO_SELF,
                    0.5f,  Animation.RELATIVE_TO_SELF,  0.5f);
            scaleAnimation.setDuration(1000);
            animationSet.addAnimation(scaleAnimation);
            image.startAnimation(animationSet);
        }
    }
    class AlphaButtonListener implements OnClickListener{
        public void onClick(View v) {
//创建一个AnimationSet对象，参数为Boolean型，
            AnimationSet animationSet = new AnimationSet(true);
//创建一个AlphaAnimation对象，参数从完全不透明度，到完全透明
            AlphaAnimation alphaAnimation = new AlphaAnimation(1, 0);
//设置动画执行的时间
            alphaAnimation.setDuration(500);
//将alphaAnimation对象添加到AnimationSet当中
            animationSet.addAnimation(alphaAnimation);
//使用ImageView的startAnimation方法执行动画
            image.startAnimation(animationSet);
        }
    }
    class TranslateButtonListener implements OnClickListener{
        public void onClick(View v) {
            AnimationSet animationSet = new AnimationSet(true);
            TranslateAnimation translateAnimation =
                    new TranslateAnimation(
                            Animation.RELATIVE_TO_SELF, 0f,
                            Animation.RELATIVE_TO_SELF, 0.5f,
                            Animation.RELATIVE_TO_SELF, 0f,
                            Animation.RELATIVE_TO_SELF, 0.5f);
            translateAnimation.setDuration(1000);
            animationSet.addAnimation(translateAnimation);
            image.startAnimation(animationSet);
        }
    }
}

3、

(1)MainActivity.java

package com.example.text;

import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.GridView;
import android.widget.ImageView;

public class MainActivity extends Activity
        implements AdapterView.OnItemClickListener{

    static final Integer[] mThumbIds = { R.drawable.grid_view_01,
            R.drawable.grid_view_02, R.drawable.grid_view_03,
            R.drawable.grid_view_04, R.drawable.grid_view_05,
            R.drawable.grid_view_06, R.drawable.grid_view_07,
            R.drawable.grid_view_08, R.drawable.grid_view_09,
            R.drawable.grid_view_10, R.drawable.grid_view_11,
            R.drawable.grid_view_12, R.drawable.grid_view_13,
            R.drawable.grid_view_14, R.drawable.grid_view_15, };

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.grid_view);
        GridView gridview = (GridView) findViewById(R.id.grid_view);
        gridview.setAdapter(new ImageAdapter(this));
        gridview.setOnItemClickListener(this);
    }
    //Item单击事件
    @Override
    public void onItemClick(AdapterView<?> parent, View view,
                            int position, long id) {
        Intent intent=new Intent(MainActivity.this,AnimActivity.class);
        Bundle bb = new Bundle();
        bb.putInt("ID",position);
        intent.putExtras(bb);
        startActivityForResult(intent,0);
    }
    // 写一个类继承BaseAdapter
    class ImageAdapter extends BaseAdapter {
        private Context mContext;

        public ImageAdapter(Context c) {
            mContext = c;
        }

        public int getCount() {
            return mThumbIds.length;
        }

        public Object getItem(int position) {
            return null;
        }

        public long getItemId(int position) {
            return 0;
        }

        public View getView(int position, View convertView, ViewGroup parent) {
            ImageView imageView;
            if (convertView == null) {
                imageView = new ImageView(mContext);
                imageView.setLayoutParams(new GridView.LayoutParams(385, 385));
                imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
                imageView.setPadding(8, 8, 8, 8);
            } else {
                imageView = (ImageView) convertView;
            }
            imageView.setImageResource(mThumbIds[position]);
            return imageView;
        }
    }
}

(2)AnimActivity.java

package com.example.text;

import android.animation.ObjectAnimator;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;

import androidx.appcompat.app.AppCompatActivity;

public class AnimActivity extends AppCompatActivity {

    Button rotateButton,alphaButton,scaleButton;
    ImageView img;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.anim);
        img = (ImageView)findViewById(R.id.imageView);
        img.setOnClickListener(new mClick());

        int nid = (int) this.getIntent().getExtras().getInt("ID");
        img.setImageResource(MainActivity.mThumbIds[nid]);
        ObjectAnimator animator = ObjectAnimator.ofFloat(img, "alpha",0.2F, 0.5F, 1.0F);
        animator.setDuration(3000);
        animator.start();
    }

    public class mClick implements View.OnClickListener
    {
        @Override
        public void onClick(View v) {
            Intent intent=new Intent(AnimActivity.以上是关于用SQLite数据库存储用户信息及动画技术和相册（Android）的主要内容，如果未能解决你的问题，请参考以下文章
 
 iOS 文件路径及数据保存
 怎么用PHP+sqlite3验证登录用户名和密码
 SQLite如何存储多条信息
 基于 Google-S2 的地理相册服务实现及应用
 python实现用户登陆（sqlite数据库存储用户信息）
 python3教程：jsonpickle和sqlite3持久化存储字典对象