今天正式把SQLlite丟進模擬機試看看

public class DatabaseActivity extends AppCompatActivity implements View.OnClickListener {

    private TextView textView;
    private String mDatabaseName;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        EdgeToEdge.enable(this);
        setContentView(R.layout.activity_database);
        ViewCompat.setOnApplyWindowInsetsListener(findViewById(R.id.main), (v, insets) -> {
            Insets systemBars = insets.getInsets(WindowInsetsCompat.Type.systemBars());
            v.setPadding(systemBars.left, systemBars.top, systemBars.right, systemBars.bottom);
            return insets;
        });
        textView = findViewById(R.id.tv_result);
        findViewById(R.id.btn_create).setOnClickListener(this);
        findViewById(R.id.btn_delete).setOnClickListener(this);
        mDatabaseName = getFilesDir()+"/test.db";
    }

    @Override
    public void onClick(View view) {
        String desc = null;
        if(view.getId()==R.id.btn_create){
            SQLiteDatabase db = openOrCreateDatabase(mDatabaseName, Context.MODE_PRIVATE, null);
            desc = String.format("數據庫%s創建%s",db.getPath(),(db!=null)?"成功":"失敗");
            textView.setText(desc);
        }else {
            boolean result = deleteDatabase(mDatabaseName);
            desc = String.format("數據庫%s刪除%s",mDatabaseName,result?"成功":"失敗");
            textView.setText(desc);
        }
    }
}

建立資料庫跟刪除:)