CISCN——2024——re——app-debug_ciscn2024re-优快云博客

输入检查类题型

package com.example.re11113;

import android.os.Bundle;
import android.util.Log;
import android.view.View.OnClickListener;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
import androidx.appcompat.app.AppCompatActivity;

public class MainActivity extends AppCompatActivity implements View.OnClickListener {
    private EditText editText;

    private boolean legal(String paramString) {
        return paramString.length() == 38 && (paramString.startsWith("flag{")) && paramString.charAt(paramString.length() - 1) == 0x7D && !inspect.inspect(paramString.substring(5, paramString.length() - 1));
    }

    @Override  // android.view.View$OnClickListener
    public void onClick(View v) {
        Log.d("Button ID", "Button ID: " + v.getId());
        if(v.getId() == 0x7F080003) {  // id:Button
            if(this.legal(this.editText.getText().toString())) {
                Toast.makeText(this, "You are right.", 0).show();
                return;
            }

            Toast.makeText(this, "You are wrong.", 0).show();
        }
    }

    @Override  // androidx.fragment.app.FragmentActivity
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        this.setContentView(layout.activity_main);
        Button button = (Button)this.findViewById(id.Button);
        this.editText = (EditText)this.findViewById(id.edit_text);
        button.setOnClickListener(this);
    }
}