尝试使用 Intent 和 onClickListener 共享数据时，Android Studio 中的应用程序在单击提交时不断崩溃

Question

该应用程序是一个通用配置文件应用程序，用于熟悉该程序，因为这是我第一次使用它，而且我对 Java 没有太多经验。主要活动有两个单选按钮、一个单选组、六个复选框、五个文本视图（三个标签和两个显示结果）和三个编辑文本。当您单击应用单选按钮的结果时，复选框将显示分配给它们的文本视图。单击提交应该移动到下一个屏幕，该屏幕显示在 EditText 中输入并使用复选框和单选按钮选择的信息。

主要活动java文件：

public class MainActivity extends AppCompatActivity {
    @SuppressLint("SetTextI18n")
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        applyButton.setOnClickListener(new View.OnClickListener()
        {
            @Override
            public void onClick(View view) {
                if (cookingbox.isChecked()) {
                    selectedhobby.setText(selectedhobby.getText().toString() + " " + cookingbox.getText().toString());
                }
                if (sportsbox.isChecked()) {
                    selectedhobby.setText(selectedhobby.getText().toString() + " " + sportsbox.getText().toString());
                }
                if (craftbox.isChecked()) {
                    selectedhobby.setText(selectedhobby.getText().toString() + " " + craftbox.getText().toString());
                }
                if (gamebox.isChecked()) {
                    selectedhobby.setText(selectedhobby.getText().toString() + " " + gamebox.getText().toString());
                }
                if (bookbox.isChecked()) {
                    selectedhobby.setText(selectedhobby.getText().toString() + " " + bookbox.getText().toString());
                }
                if (otherbox.isChecked()) {
                    selectedhobby.setText(selectedhobby.getText().toString() + " " + otherbox.getText().toString());
                }
                if (malebutton.isChecked()) {
                    gendertext.setText(malebutton.getText().toString());
                } else if (femalebutton.isChecked()) {
                    gendertext.setText(femalebutton.getText().toString());
                }
            }
        });
        submitButton.setOnClickListener(new View.OnClickListener()
        {
            @Override
            public void onClick(View view)
            {
                Intent Intent;
                Intent = new Intent(MainActivity.this, Screen2Activity.class);
                Intent.putExtra("selectedhobby", "");
                Intent.putExtra("editTextText2", "");
                Intent.putExtra("editTextText4", "");
                Intent.putExtra("editTextText3", "");
                Intent.putExtra("gendertext", "");
                startActivity(Intent);
                setContentView(R.layout.screen2);
            }
        });
    }
}

Screen2 Java 文件：

import androidx.appcompat.app.AppCompatActivity;

public class Screen2Activity extends AppCompatActivity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.screen2);
        ;
        textName = findViewById(R.id.textName);
        textAge = findViewById(R.id.textAge);
        textBirthplace = findViewById(R.id.textBirthplace);
        textHobbies = findViewById(R.id.textHobbies);
        textGender = findViewById(R.id.textGender);

        Intent Intent = getIntent();
        if (Intent != null)
        {
            String editTextText2 = Intent.getStringExtra("editTextText2");
            String editTextText4 = Intent.getStringExtra("editTextText4");
            String selectedhobby = Intent.getStringExtra("selectedhobby");
            String gendertext = Intent.getStringExtra("gendertext");
            Integer editTextText3 = Intent.getIntExtra("editTextText3", -1);
            textName.setText(Log.d("Screen2Activity", "Name :  + editTextText2"));
            textAge.setText(Log.d("Screen2Activity", "Age :  + editTextText3"));
            textBirthplace.setText(Log.d("Screen2Activity", "Birthplace :  + editTextText4"));
            textHobbies.setText(Log.d("Screen2Activity", "Hobbies :  + selectedhobby"));
            textGender.setText(Log.d("Screen2Activity", "Gender :  + gendertext"));
        }

我无法从 EditText 字段获取信息以移动到第二个活动屏幕。当我返回主活动 java 文件尝试修复意图错误时，我想我也搞乱了提交按钮的代码，现在两者都不起作用。

Answer 1

首先替换：

            textName.setText(Log.d("Screen2Activity", "Name :  + editTextText2"));
            textAge.setText(Log.d("Screen2Activity", "Age :  + editTextText3"));
            textBirthplace.setText(Log.d("Screen2Activity", "Birthplace :  + editTextText4"));
            textHobbies.setText(Log.d("Screen2Activity", "Hobbies :  + selectedhobby"));
            textGender.setText(Log.d("Screen2Activity", "Gender :  + gendertext"));

与：

            Log.d("Screen2Activity", "Name :  + editTextText2");
            Log.d("Screen2Activity", "Age :  + editTextText3");
            Log.d("Screen2Activity", "Birthplace :  + editTextText4");
            Log.d("Screen2Activity", "Hobbies :  + selectedhobby");
            Log.d("Screen2Activity", "Gender :  + gendertext");

请勿尝试使用

Log.d()

的输出。只需查看 Logcat 即可查看

Log.d()

调用在日志记录中发出的内容。