【Android】内嵌数据库IDE(可视化操作类)

Android开发的朋友应该对数据库内容的管理深有体会，想看一下放入数据库的内容都不是很方便，要么用root的设备导出来看或用第三方的手机版的ide。但是都要求root之后。最近一直在想android方便快捷的方法，今天刚好弄到了数据库这块。就写了一个Activity专门用来看数据库的，功能就是看对应数据库的表及表中的数据库。

效果图

刚写还没来得及美化，后面在使用过程中再时行完善。

DBIDEActivity.java

import java.util.ArrayList;

import java.util.List;

import net.sqlcipher.database.SQLiteDatabase;

import android.app.Activity;

import android.database.Cursor;

import android.graphics.Color;

import android.os.Bundle;

import android.view.View;

import android.view.ViewGroup;

import android.widget.AbsListView.LayoutParams;

import android.widget.AdapterView;

import android.widget.AdapterView.OnItemClickListener;

import android.widget.ArrayAdapter;

import android.widget.BaseAdapter;

import android.widget.HorizontalScrollView;

import android.widget.LinearLayout;

import android.widget.ListView;

import android.widget.TextView;

/**

 * 数据库图形界面。

 * @author Harlan Song

 * @email [email protected]

 * @date 2014年4月29日

 */

public class DBIDEActivity extends Activity implements OnItemClickListener {

    private boolean table = true;

    List<String> tables = new ArrayList<String>();

    SQLiteDatabase db = null;

    ListView listview;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setTitle("tables");

        HorizontalScrollView horizontalScrollView = new HorizontalScrollView(this);

        horizontalScrollView.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));

        listview = new ListView(this);

        horizontalScrollView.addView(listview,new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT));

        setContentView(horizontalScrollView);

        listview.setOnItemClickListener(this);

        db = SQLiteHelper.getInstanceDB(this);

        loadTable();

    }
/**

     * 加载所有表。

     */

    private void loadTable(){

        String sql = "SELECT name FROM sqlite_master WHERE type=‘table‘;";

        Cursor cursor = db.rawQuery(sql, null);

        while(cursor.moveToNext()){

            tables.add(cursor.getString(0));

        }

        cursor.close();

        ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1, tables);

        listview.setAdapter(adapter);

    }
private class TableAdapter extends BaseAdapter{

        private ArrayList<String[]> datas;

        public TableAdapter(ArrayList<String[]> datas){

            this.datas = datas;

        }

        @Override

        public int getCount() {

            return datas.size();

        }
@Override

        public Object getItem(int position) {

            return datas.get(position);

        }
@Override

        public long getItemId(int position) {

            return position;

        }
@Override

        public View getView(int position, View convertView, ViewGroup parent) {

            LinearLayout layout_line = new LinearLayout(DBIDEActivity.this);

            layout_line.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT,LayoutParams.WRAP_CONTENT));

            String[] data = datas.get(position);

            for (int i = 0; i < data.length; i++) {

                TextView tvName = new TextView(DBIDEActivity.this);

                tvName.setLayoutParams(new LayoutParams(200, LayoutParams.WRAP_CONTENT));

                tvName.setText(data[i]);

                layout_line.addView(tvName);

                if(position == 0 ){

                    tvName.setPadding(0, 5, 0, 5);

                    tvName.setTextSize(15);

                    tvName.setBackgroundColor(Color.GRAY);

                    //tvName.setGravity(Gravity.CENTER_HORIZONTAL);

                }else{

                    tvName.setTextSize(10);

                }
}

            return layout_line;

        }

    }
@Override

    public void onBackPressed() {

        if(table ==false){

            ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1, tables);

            listview.setAdapter(adapter);

            table = true;

            setTitle("tables");

        }else{

            super.onBackPressed();

        }

    }
@Override

    public void onItemClick(AdapterView<?> arg0, View arg1, int position, long arg3) {

        if(table){

            String tableName = tables.get(position);

            loadTableData(tableName);

        }

    }
/**

     * 加载表数据。

     * @param tableName

     */

    private void loadTableData(String tableName){

        setTitle(tableName);

        String sql = "select * from " + tableName;

        Cursor cursor =db.rawQuery(sql, null);

        int columnCount = cursor.getColumnCount();

        ArrayList<String[]> datas = new ArrayList<String[]>();

        String[]  names = new String[columnCount];

        for (int i = 0; i < columnCount; i++) {

            names[i] = cursor.getColumnName(i);

        }

        datas.add(names);

        while(cursor.moveToNext()){

            String[]  data = new String[columnCount];

            for (int i = 0; i < columnCount; i++) {

                data[i] = cursor.getString(i);

            }

            datas.add(data);

        }

        cursor.close();

        table = false;

        listview.setAdapter(new TableAdapter(datas));

    }

}

View
Code

就一个Activity，对于一个经常操作数据库的项目来说多个类没什么的。里面的SQLiteDatabase换成系统自带的就可以了。

【Android】内嵌数据库IDE(可视化操作类),码迷,mamicode.com