Android如何查找數據庫及其表格？

嗨我對android開發相當新，我想問如果它是可以找到並查看數據庫，如果它創建如下？代碼工作正常，通過添加查看記錄，但問題是我無法找到數據庫。Android如何查找數據庫及其表格？

public class db extends Activity 
{ 
SQLiteDatabase mydb; 
TextView name,review; 
Button save,myview; 
ListView lv; 
    ArrayList data; 
    @Override 
public void onCreate(Bundle savedInstanceState) 
{ 
super.onCreate(savedInstanceState); 
setContentView(R.layout.db); 

name=(TextView)findViewById(R.id.entername); 
save=(Button) findViewById(R.id.bsave); 
review = (TextView)findViewById(R.id.enterreview); 



lv=(ListView) findViewById(R.id.list); 
lv.setOnItemClickListener(new OnItemClickListener() 
    { 

    public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,long arg3) 
{ 
Toast.makeText(getApplicationContext(), data.get(arg2).toString(),3000).show(); 
} 

}); 

    mydb = db.this.openOrCreateDatabase("mydatabase", MODE_PRIVATE, null); 
    mydb.execSQL("CREATE TABLE IF NOT EXISTS test2 (id INTEGER PRIMARY KEY AUTOINCREMENT,name  
    varchar,review varchar);"); 

//=== SAVE BUTTON FOR INSERTING DATA TO DATABASE ======= 

    save.setOnClickListener(new View.OnClickListener() 
    { 

public void onClick(View v) 
    { 
mydb.execSQL("insert into test2 (name,review) values(?,?);", new String[]    
    {name.getText().toString(), review.getText().toString(), }); 

    Toast.makeText(getApplicationContext(), "DATA INSERTED", 3000).show(); 

} 
}); 

    myview=(Button)findViewById(R.id.bview); 
    data=new ArrayList(); 

    //=VIEW BUTTON TO SHOW DATA INSERTED IN THE LISTVIEW======= 

    myview.setOnClickListener(new View.OnClickListener() 
{ 

public void onClick(View v) 
{ 
Toast.makeText(getApplicationContext(), "Review Added", 5000).show(); 
Cursor cursor2=mydb.rawQuery("SELECT * FROM test2;", null); 

if (cursor2.moveToFirst()) 
    { 
Toast.makeText(getApplicationContext(), "Review's are:", 5000).show(); 
data.clear(); 
do 
{ 
data.add(cursor2.getString(cursor2.getColumnIndex("name"))); 
data.add(cursor2.getString(cursor2.getColumnIndex("review"))); 

    } 
while (cursor2.moveToNext()); 


    //====CODE FOR SHOWING DATA AS A SIMPLE LIST ITEM========================================= 

    ArrayAdapter <String> adapter=new ArrayAdapter<String> 
    (db.this,android.R.layout.simple_list_item_1,data); 
    lv.setAdapter(adapter); 
} 
else 
    { 
    Toast.makeText(getApplicationContext(), "There are no reviews available", 3000).show(); 
    } 
    cursor2.close(); 
} 
}); 

    } 

    }

來源

2014-04-02 user3449550

你是一個Linux操作系統的窗口在linux上machine..if我可以張貼，從您的device..if拉數據庫中的簡單的shell腳本你喜歡。 –

嘿謝謝你的repoly，但我使用windows 8。 – user3449550

請參閱http://stackoverflow.com/questions/4856210/access-sqlite-database-on-android-device – laalto

您可以使用此方法：

public boolean isDatabaseExist() 
{ 
    SQLiteDatabase checkDB = null; 
    try { 
     checkDB = SQLiteDatabase.openDatabase(DB_PATH + DB_NAME, null, SQLiteDatabase.OPEN_READONLY); 
     checkDB.close(); 
     return true; 
    } 
    catch(SQLiteException e) { 
     // Log an info message stating database doesn't exist. 
    } 

    return false; 
}

來源

2014-04-02 11:13:04

這是如何回答OP的問題？ – laalto

Android如何查找數據庫及其表格？

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