Java 在Android中选择微调器选项时如何显示不同的文本视图

我正在开发一个应用程序，当用户在Android Studio中选择微调器的每个选项时，我需要显示不同的文本视图，我的代码如下：

Txt_Tiempo = (Spinner) findViewById(R.id.Txt_Tiempo);

Txt_Tiempo.setAdapter(adapter);

        Txt_Tiempo.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
            @Override
            public void onItemSelected(AdapterView<?> adapterView, View view, int i, long l) {
                if (i == 0) {

                }
                if (i == 1)
                {
                    Toast.makeText(Cesta_Activity.this, "En" , Toast.LENGTH_SHORT).show();
                }
                if (i == 2)
                {
                    Toast.makeText(Cesta_Activity.this, "Completa la orden y muy pronto nos pondremos en contacto contigo", Toast.LENGTH_LONG).show();
                }
            }
            @Override
            public void onNothingSelected(AdapterView<?> adapterView) {

            }
        });

---

在微调器下方添加textview，并且（假设您已将所有textview的可见性设置为“已消失”），只要选择（特定）选项，您就可以通过键入以下内容来设置相应的textview可见：

---

textview1.setVisibility（View.VISIBLE）
在微调器下方添加文本视图，并且（假设您已将所有文本视图的可见性设置为“消失”），只要选择了（特定）选项，就可以通过键入以下内容设置相应的文本视图可见：

textview1.setVisibility（View.VISIBLE）
结果：
使用以下步骤：

使用
ConstraintLayout
或
RelativeLayout在同一位置使用所有
TextView

在
.xml
文件中设置所有
TextView
的
visibility=“gone”

然后，在选择新的
微调器项目时，更改每个
文本视图的
可见性

以下是
activity\u main.xml
文件：

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <TextView
        android:id="@+id/category1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="24dp"
        android:layout_marginBottom="16dp"
        android:text="Category - 1"
        android:visibility="gone"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="@+id/spinner"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintStart_toStartOf="@+id/spinner"
        app:layout_constraintTop_toBottomOf="@+id/spinner"
        app:layout_constraintVertical_bias="0.0" />

    <TextView
        android:id="@+id/category2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="24dp"
        android:layout_marginBottom="16dp"
        android:text="Category - 2"
        android:visibility="gone"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="@+id/spinner"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintStart_toStartOf="@+id/spinner"
        app:layout_constraintTop_toBottomOf="@+id/spinner"
        app:layout_constraintVertical_bias="0.0" />

    <TextView
        android:id="@+id/category3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="24dp"
        android:layout_marginBottom="16dp"
        android:text="Category - 3"
        android:visibility="gone"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="@+id/spinner"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintStart_toStartOf="@+id/spinner"
        app:layout_constraintTop_toBottomOf="@+id/spinner"
        app:layout_constraintVertical_bias="0.0" />

    <TextView
        android:id="@+id/category4"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="24dp"
        android:layout_marginBottom="16dp"
        android:text="Category - 4"
        android:visibility="gone"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="@+id/spinner"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintStart_toStartOf="@+id/spinner"
        app:layout_constraintTop_toBottomOf="@+id/spinner"
        app:layout_constraintVertical_bias="0.0" />

    <Spinner
        android:id="@+id/spinner"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="16dp"
        android:layout_marginLeft="16dp"
        android:layout_marginTop="16dp"
        android:layout_marginEnd="16dp"
        android:layout_marginRight="16dp"
        android:spinnerMode="dropdown"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.32" />

</androidx.constraintlayout.widget.ConstraintLayout>

public class MainActivity extends AppCompatActivity {

    TextView category1, category2, category3, category4;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        category1 = findViewById(R.id.category1);
        category2 = findViewById(R.id.category2);
        category3 = findViewById(R.id.category3);
        category4 = findViewById(R.id.category4);

        Spinner spinner = findViewById(R.id.spinner);
        String[] spinnerArray = {"Category-1", "Category-2", "Category-3", "Category-4"};
        ArrayAdapter<String> spinnerArrayAdapter = new ArrayAdapter(this, android.R.layout.simple_spinner_item, spinnerArray);
        spinnerArrayAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
        spinner.setAdapter(spinnerArrayAdapter);

        spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
            @Override
            public void onItemSelected(AdapterView<?> parent, View view, int category, long id) {
                showTextView(category);
            }

            @Override
            public void onNothingSelected(AdapterView<?> parent) {

            }
        });
    }

    void showTextView(int category) {
        switch (category) {
            case 0:
                category1.setVisibility(View.VISIBLE);
                category2.setVisibility(View.GONE);
                category3.setVisibility(View.GONE);
                category4.setVisibility(View.GONE);
                break;
            case 1:
                category1.setVisibility(View.GONE);
                category2.setVisibility(View.VISIBLE);
                category3.setVisibility(View.GONE);
                category4.setVisibility(View.GONE);
                break;
            case 2:
                category1.setVisibility(View.GONE);
                category2.setVisibility(View.GONE);
                category3.setVisibility(View.VISIBLE);
                category4.setVisibility(View.GONE);
                break;
            case 3:
                category1.setVisibility(View.GONE);
                category2.setVisibility(View.GONE);
                category3.setVisibility(View.GONE);
                category4.setVisibility(View.VISIBLE);
                break;
        }
    }
}

享受你现在的工作。
结果：
使用以下步骤：

使用
ConstraintLayout
或
RelativeLayout在同一位置使用所有
TextView

在
.xml
文件中设置所有
TextView
的
visibility=“gone”

然后，在选择新的
微调器项目时，更改每个
文本视图的
可见性

以下是
activity\u main.xml
文件：

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <TextView
        android:id="@+id/category1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="24dp"
        android:layout_marginBottom="16dp"
        android:text="Category - 1"
        android:visibility="gone"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="@+id/spinner"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintStart_toStartOf="@+id/spinner"
        app:layout_constraintTop_toBottomOf="@+id/spinner"
        app:layout_constraintVertical_bias="0.0" />

    <TextView
        android:id="@+id/category2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="24dp"
        android:layout_marginBottom="16dp"
        android:text="Category - 2"
        android:visibility="gone"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="@+id/spinner"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintStart_toStartOf="@+id/spinner"
        app:layout_constraintTop_toBottomOf="@+id/spinner"
        app:layout_constraintVertical_bias="0.0" />

    <TextView
        android:id="@+id/category3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="24dp"
        android:layout_marginBottom="16dp"
        android:text="Category - 3"
        android:visibility="gone"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="@+id/spinner"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintStart_toStartOf="@+id/spinner"
        app:layout_constraintTop_toBottomOf="@+id/spinner"
        app:layout_constraintVertical_bias="0.0" />

    <TextView
        android:id="@+id/category4"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="24dp"
        android:layout_marginBottom="16dp"
        android:text="Category - 4"
        android:visibility="gone"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="@+id/spinner"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintStart_toStartOf="@+id/spinner"
        app:layout_constraintTop_toBottomOf="@+id/spinner"
        app:layout_constraintVertical_bias="0.0" />

    <Spinner
        android:id="@+id/spinner"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="16dp"
        android:layout_marginLeft="16dp"
        android:layout_marginTop="16dp"
        android:layout_marginEnd="16dp"
        android:layout_marginRight="16dp"
        android:spinnerMode="dropdown"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.32" />

</androidx.constraintlayout.widget.ConstraintLayout>

public class MainActivity extends AppCompatActivity {

    TextView category1, category2, category3, category4;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        category1 = findViewById(R.id.category1);
        category2 = findViewById(R.id.category2);
        category3 = findViewById(R.id.category3);
        category4 = findViewById(R.id.category4);

        Spinner spinner = findViewById(R.id.spinner);
        String[] spinnerArray = {"Category-1", "Category-2", "Category-3", "Category-4"};
        ArrayAdapter<String> spinnerArrayAdapter = new ArrayAdapter(this, android.R.layout.simple_spinner_item, spinnerArray);
        spinnerArrayAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
        spinner.setAdapter(spinnerArrayAdapter);

        spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
            @Override
            public void onItemSelected(AdapterView<?> parent, View view, int category, long id) {
                showTextView(category);
            }

            @Override
            public void onNothingSelected(AdapterView<?> parent) {

            }
        });
    }

    void showTextView(int category) {
        switch (category) {
            case 0:
                category1.setVisibility(View.VISIBLE);
                category2.setVisibility(View.GONE);
                category3.setVisibility(View.GONE);
                category4.setVisibility(View.GONE);
                break;
            case 1:
                category1.setVisibility(View.GONE);
                category2.setVisibility(View.VISIBLE);
                category3.setVisibility(View.GONE);
                category4.setVisibility(View.GONE);
                break;
            case 2:
                category1.setVisibility(View.GONE);
                category2.setVisibility(View.GONE);
                category3.setVisibility(View.VISIBLE);
                category4.setVisibility(View.GONE);
                break;
            case 3:
                category1.setVisibility(View.GONE);
                category2.setVisibility(View.GONE);
                category3.setVisibility(View.GONE);
                category4.setVisibility(View.VISIBLE);
                break;
        }
    }
}

享受您的工作。
您能提供一些示例吗？我找不到示例，但我真正想要的是通过微调器拥有多个选项，并且当选择微调器的各个选项时，会显示不同的texview，你能提供一些例子吗？我找不到例子，但我真正想要的是通过微调器有几个选项，当微调器的各个选项被选中时，会出现不同的texview，这些选项可能会被隐藏