如何将link tablerow内容添加到checkbox?
How to link tablerow content to checkbox?
想象一下,我在主要 activity 中有一个带有标准的复选框,在第二个 activity 中有带有标准的复选框 table。我想 link table 复选框,例如当价格和里程被选中时,只显示价格和里程列。但是当什么都没有检查时 table 不是 appearing.I 如果有人能解释如何做或者给我一个 link 教程我将不胜感激。
MainActivity.java:
package todo.beginner.com.carchooser2;
import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.Toast;
import static todo.beginner.com.carchooser2.R.id.checkBoxPrice;
import static todo.beginner.com.carchooser2.R.id.checkBoxGas;
import static todo.beginner.com.carchooser2.R.id.checkBoxYear;
import static todo.beginner.com.carchooser2.R.id.checkBoxMileage;
import static todo.beginner.com.carchooser2.R.id.checkBoxCapacity;
public class MainActivity extends AppCompatActivity {
private CheckBox check1, check2, check3, check4, check5;
private static Button button_next;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
addListenerToCeckBox();
OnClickButtonListener();
}
public void OnClickButtonListener() {
button_next = (Button)findViewById(R.id.button);
button_next.setOnClickListener(
new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(MainActivity.this, SecondActivity.class);
startActivity(intent);
}
}
);
new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(MainActivity.this, SecondActivity.class);
intent.putExtra("Price", check1.isChecked());
startActivity(intent);
}
};
new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(MainActivity.this, SecondActivity.class);
intent.putExtra("Year", check2.isChecked());
startActivity(intent);
}
};
new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(MainActivity.this, SecondActivity.class);
intent.putExtra("Capacity", check3.isChecked());
startActivity(intent);
}
};
new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(MainActivity.this, SecondActivity.class);
intent.putExtra("Gas", check4.isChecked());
startActivity(intent);
}
};
new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(MainActivity.this, SecondActivity.class);
intent.putExtra("Mileage", check5.isChecked());
startActivity(intent);
}
};
}
public void addListenerToCeckBox() {
check1 = (CheckBox)findViewById(checkBoxCena);
check1.setOnClickListener(
new View.OnClickListener() {
@Override
public void onClick(View v) {
if (((CheckBox)v).isChecked()){
Toast.makeText(MainActivity.this,
"Price is chosen", Toast.LENGTH_LONG).show();
}
}
}
);
check2 = (CheckBox)findViewById(checkBoxGads);
check2.setOnClickListener(
new View.OnClickListener() {
@Override
public void onClick(View v) {
if (((CheckBox)v).isChecked()){
Toast.makeText(MainActivity.this,
"Year is chosen", Toast.LENGTH_LONG).show();
}
}
}
);
check3 = (CheckBox)findViewById(checkBoxTilpums);
check3.setOnClickListener(
new View.OnClickListener() {
@Override
public void onClick(View v) {
if (((CheckBox)v).isChecked()){
Toast.makeText(MainActivity.this,
"Engine capacity is chosen", Toast.LENGTH_LONG).show();
}
}
}
);
check4 = (CheckBox)findViewById(checkBoxDegviela);
check4.setOnClickListener(
new View.OnClickListener() {
@Override
public void onClick(View v) {
if (((CheckBox)v).isChecked()){
Toast.makeText(MainActivity.this,
"Gas consumption is chosen", Toast.LENGTH_LONG).show();
}
}
}
);
check5 = (CheckBox)findViewById(checkBoxNobraukums);
check5.setOnClickListener(
new View.OnClickListener() {
@Override
public void onClick(View v) {
if (((CheckBox)v).isChecked()){
Toast.makeText(MainActivity.this,
"Mileage is chosen", Toast.LENGTH_LONG).show();
}
}
}
);
}
}
activity_main.xml:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/activity_main"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="todo.beginner.com.carchooser2.MainActivity">
<CheckBox
android:text="Price"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/checkBoxPrice"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_marginTop="67dp" />
<CheckBox
android:text="Year"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/checkBoxPrice"
android:layout_alignRight="@+id/checkBoxPrice"
android:layout_alignEnd="@+id/checkBoxPrice"
android:layout_marginTop="33dp"
android:id="@+id/checkBoxYear" />
<CheckBox
android:text="Capacity"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="37dp"
android:id="@+id/checkBoxCapacity"
android:layout_below="@+id/checkBoxYear"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true" />
<CheckBox
android:text="Gas"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/checkBoxCapacity"
android:layout_alignRight="@+id/checkBoxCapacity"
android:layout_alignEnd="@+id/checkBoxCapacity"
android:layout_marginTop="30dp"
android:id="@+id/checkBoxGas" />
<CheckBox
android:text="Mileage"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/checkBoxGas"
android:layout_alignRight="@+id/checkBoxGas"
android:layout_alignEnd="@+id/checkBoxGas"
android:layout_marginTop="33dp"
android:id="@+id/checkBoxMileage" />
<Button
android:text="Continue"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:layout_marginBottom="31dp"
android:id="@+id/button" />
<TextView
android:text="Choose criteria!"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="8dp"
android:id="@+id/textView"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true" />
</RelativeLayout>
SecondActivity.java:
package todo.beginner.com.carchooser2;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
public class SecondActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_second);
boolean hasPrice = getIntent().getBooleanExtra("Price", true);
boolean hasYear = getIntent().getBooleanExtra("Year", true);
boolean hasCapacity = getIntent().getBooleanExtra("Capacity", true);
boolean hasGas = getIntent().getBooleanExtra("Gas", true);
boolean hasMileage = getIntent().getBooleanExtra("Mileage", true);
TextView Price = (TextView) findViewById(R.id.Price); // you will need to create this id in your layout
Price.setVisibility(hasPrice ? View.VISIBLE : View.GONE);
TextView Year = (TextView) findViewById(R.id.Year); // you will need to create this id in your layout
Year.setVisibility(hasYear ? View.VISIBLE : View.GONE);
TextView Capacity = (TextView) findViewById(R.id.Capacity); // you will need to create this id in your layout
Capacity.setVisibility(hasCapacity ? View.VISIBLE : View.GONE);
TextView Gas = (TextView) findViewById(R.id.Gas); // you will need to create this id in your layout
Gas.setVisibility(hasGas ? View.VISIBLE : View.GONE);
TextView Mileage = (TextView) findViewById(R.id.Mileage); // you will need to create this id in your layout
Mileage.setVisibility(hasMileage ? View.VISIBLE : View.GONE);
}
}
activity_second.xml:
<?xml version="1.0" encoding="utf-8"?>
<TableLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginTop="10dp">
<TableRow
android:background="#607D8B"
android:padding="5dp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:id="@+id/Name"
android:text="Car Name" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:id="@+id/Price"
android:text="Price" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:id="@+id/Year"
android:text="Year" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:id="@+id/Gas"
android:text="Gas" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:id="@+id/Mileage"
android:text="Mileage" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:id="@+id/Capacity"
android:text="Capacity" />
</TableRow>
<TableRow
android:background="#ECEFF1"
android:padding="5dp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="Audi" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="5000" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="2001" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="7" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="280000" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="2.5" />
</TableRow>
</TableLayout>
在您的 OnClickButtonListener
中,您声明了很多 new View.OnClickListener()
,但您只是在创建实现,而不对它们做任何事情。这些都应该被删除。您的方法应如下所示:
public void OnClickButtonListener() {
button_next = (Button)findViewById(R.id.button);
button_next.setOnClickListener(
new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(MainActivity.this, SecondActivity.class);
intent.putExtra("Price", check1.isChecked());
intent.putExtra("Year", check2.isChecked());
intent.putExtra("Capacity", check3.isChecked());
intent.putExtra("Gas", check4.isChecked());
intent.putExtra("Mileage", check5.isChecked());
startActivity(intent);
}
}
);
}
看看它如何与SecondActivity
中的onCreate
方法中的代码并行?
此更改后,您应该会看到您期望看到的内容。
您的第一步是创建一个具有复选框值的 Intent
,并将其传递给第二个 activity:
Intent intent = new Intent(MainActivity.this, SecondActivity.class);
intent.putExtra("name", check1.isChecked());
// same for other checkboxes
startActivity(intent);
接下来,在您的 SecondActivity
中访问这些值:
boolean hasName = getIntent().getBooleanExtra("name", true);
创建 TableRow
时,根据以下值设置可见性:
TextView carName = (TextView) findViewById(R.id.car_name); // you will need to create this id in your layout
carName.setVisibility(hasName ? View.VISIBLE : View.GONE);
请记住,如果没有选中任何内容,那么您将看不到任何内容,因此您可能应该开始 MainActivity
并首先选中所有复选框。
想象一下,我在主要 activity 中有一个带有标准的复选框,在第二个 activity 中有带有标准的复选框 table。我想 link table 复选框,例如当价格和里程被选中时,只显示价格和里程列。但是当什么都没有检查时 table 不是 appearing.I 如果有人能解释如何做或者给我一个 link 教程我将不胜感激。
MainActivity.java:
package todo.beginner.com.carchooser2;
import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.Toast;
import static todo.beginner.com.carchooser2.R.id.checkBoxPrice;
import static todo.beginner.com.carchooser2.R.id.checkBoxGas;
import static todo.beginner.com.carchooser2.R.id.checkBoxYear;
import static todo.beginner.com.carchooser2.R.id.checkBoxMileage;
import static todo.beginner.com.carchooser2.R.id.checkBoxCapacity;
public class MainActivity extends AppCompatActivity {
private CheckBox check1, check2, check3, check4, check5;
private static Button button_next;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
addListenerToCeckBox();
OnClickButtonListener();
}
public void OnClickButtonListener() {
button_next = (Button)findViewById(R.id.button);
button_next.setOnClickListener(
new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(MainActivity.this, SecondActivity.class);
startActivity(intent);
}
}
);
new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(MainActivity.this, SecondActivity.class);
intent.putExtra("Price", check1.isChecked());
startActivity(intent);
}
};
new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(MainActivity.this, SecondActivity.class);
intent.putExtra("Year", check2.isChecked());
startActivity(intent);
}
};
new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(MainActivity.this, SecondActivity.class);
intent.putExtra("Capacity", check3.isChecked());
startActivity(intent);
}
};
new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(MainActivity.this, SecondActivity.class);
intent.putExtra("Gas", check4.isChecked());
startActivity(intent);
}
};
new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(MainActivity.this, SecondActivity.class);
intent.putExtra("Mileage", check5.isChecked());
startActivity(intent);
}
};
}
public void addListenerToCeckBox() {
check1 = (CheckBox)findViewById(checkBoxCena);
check1.setOnClickListener(
new View.OnClickListener() {
@Override
public void onClick(View v) {
if (((CheckBox)v).isChecked()){
Toast.makeText(MainActivity.this,
"Price is chosen", Toast.LENGTH_LONG).show();
}
}
}
);
check2 = (CheckBox)findViewById(checkBoxGads);
check2.setOnClickListener(
new View.OnClickListener() {
@Override
public void onClick(View v) {
if (((CheckBox)v).isChecked()){
Toast.makeText(MainActivity.this,
"Year is chosen", Toast.LENGTH_LONG).show();
}
}
}
);
check3 = (CheckBox)findViewById(checkBoxTilpums);
check3.setOnClickListener(
new View.OnClickListener() {
@Override
public void onClick(View v) {
if (((CheckBox)v).isChecked()){
Toast.makeText(MainActivity.this,
"Engine capacity is chosen", Toast.LENGTH_LONG).show();
}
}
}
);
check4 = (CheckBox)findViewById(checkBoxDegviela);
check4.setOnClickListener(
new View.OnClickListener() {
@Override
public void onClick(View v) {
if (((CheckBox)v).isChecked()){
Toast.makeText(MainActivity.this,
"Gas consumption is chosen", Toast.LENGTH_LONG).show();
}
}
}
);
check5 = (CheckBox)findViewById(checkBoxNobraukums);
check5.setOnClickListener(
new View.OnClickListener() {
@Override
public void onClick(View v) {
if (((CheckBox)v).isChecked()){
Toast.makeText(MainActivity.this,
"Mileage is chosen", Toast.LENGTH_LONG).show();
}
}
}
);
}
}
activity_main.xml:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/activity_main"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="todo.beginner.com.carchooser2.MainActivity">
<CheckBox
android:text="Price"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/checkBoxPrice"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_marginTop="67dp" />
<CheckBox
android:text="Year"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/checkBoxPrice"
android:layout_alignRight="@+id/checkBoxPrice"
android:layout_alignEnd="@+id/checkBoxPrice"
android:layout_marginTop="33dp"
android:id="@+id/checkBoxYear" />
<CheckBox
android:text="Capacity"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="37dp"
android:id="@+id/checkBoxCapacity"
android:layout_below="@+id/checkBoxYear"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true" />
<CheckBox
android:text="Gas"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/checkBoxCapacity"
android:layout_alignRight="@+id/checkBoxCapacity"
android:layout_alignEnd="@+id/checkBoxCapacity"
android:layout_marginTop="30dp"
android:id="@+id/checkBoxGas" />
<CheckBox
android:text="Mileage"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/checkBoxGas"
android:layout_alignRight="@+id/checkBoxGas"
android:layout_alignEnd="@+id/checkBoxGas"
android:layout_marginTop="33dp"
android:id="@+id/checkBoxMileage" />
<Button
android:text="Continue"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:layout_marginBottom="31dp"
android:id="@+id/button" />
<TextView
android:text="Choose criteria!"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="8dp"
android:id="@+id/textView"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true" />
</RelativeLayout>
SecondActivity.java:
package todo.beginner.com.carchooser2;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
public class SecondActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_second);
boolean hasPrice = getIntent().getBooleanExtra("Price", true);
boolean hasYear = getIntent().getBooleanExtra("Year", true);
boolean hasCapacity = getIntent().getBooleanExtra("Capacity", true);
boolean hasGas = getIntent().getBooleanExtra("Gas", true);
boolean hasMileage = getIntent().getBooleanExtra("Mileage", true);
TextView Price = (TextView) findViewById(R.id.Price); // you will need to create this id in your layout
Price.setVisibility(hasPrice ? View.VISIBLE : View.GONE);
TextView Year = (TextView) findViewById(R.id.Year); // you will need to create this id in your layout
Year.setVisibility(hasYear ? View.VISIBLE : View.GONE);
TextView Capacity = (TextView) findViewById(R.id.Capacity); // you will need to create this id in your layout
Capacity.setVisibility(hasCapacity ? View.VISIBLE : View.GONE);
TextView Gas = (TextView) findViewById(R.id.Gas); // you will need to create this id in your layout
Gas.setVisibility(hasGas ? View.VISIBLE : View.GONE);
TextView Mileage = (TextView) findViewById(R.id.Mileage); // you will need to create this id in your layout
Mileage.setVisibility(hasMileage ? View.VISIBLE : View.GONE);
}
}
activity_second.xml:
<?xml version="1.0" encoding="utf-8"?>
<TableLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginTop="10dp">
<TableRow
android:background="#607D8B"
android:padding="5dp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:id="@+id/Name"
android:text="Car Name" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:id="@+id/Price"
android:text="Price" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:id="@+id/Year"
android:text="Year" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:id="@+id/Gas"
android:text="Gas" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:id="@+id/Mileage"
android:text="Mileage" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:id="@+id/Capacity"
android:text="Capacity" />
</TableRow>
<TableRow
android:background="#ECEFF1"
android:padding="5dp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="Audi" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="5000" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="2001" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="7" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="280000" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="2.5" />
</TableRow>
</TableLayout>
在您的 OnClickButtonListener
中,您声明了很多 new View.OnClickListener()
,但您只是在创建实现,而不对它们做任何事情。这些都应该被删除。您的方法应如下所示:
public void OnClickButtonListener() {
button_next = (Button)findViewById(R.id.button);
button_next.setOnClickListener(
new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(MainActivity.this, SecondActivity.class);
intent.putExtra("Price", check1.isChecked());
intent.putExtra("Year", check2.isChecked());
intent.putExtra("Capacity", check3.isChecked());
intent.putExtra("Gas", check4.isChecked());
intent.putExtra("Mileage", check5.isChecked());
startActivity(intent);
}
}
);
}
看看它如何与SecondActivity
中的onCreate
方法中的代码并行?
此更改后,您应该会看到您期望看到的内容。
您的第一步是创建一个具有复选框值的 Intent
,并将其传递给第二个 activity:
Intent intent = new Intent(MainActivity.this, SecondActivity.class);
intent.putExtra("name", check1.isChecked());
// same for other checkboxes
startActivity(intent);
接下来,在您的 SecondActivity
中访问这些值:
boolean hasName = getIntent().getBooleanExtra("name", true);
创建 TableRow
时,根据以下值设置可见性:
TextView carName = (TextView) findViewById(R.id.car_name); // you will need to create this id in your layout
carName.setVisibility(hasName ? View.VISIBLE : View.GONE);
请记住,如果没有选中任何内容,那么您将看不到任何内容,因此您可能应该开始 MainActivity
并首先选中所有复选框。