英文:
Why are my buttons unresponsive in my Android Studio app?
问题
很抱歉,代码部分不能提供翻译,但我可以为您提供关于问题的解决建议。
根据您提供的信息,您的代码看起来没有明显的错误。但是,如果您的按钮在被点击时没有响应,可能有以下一些常见原因:
-
XML 布局文件问题:请确保您的 XML 布局文件(activity_first.xml)中的按钮的 ID 与 Java 代码中的按钮 ID 匹配。在您的代码中,按钮的 ID 分别是
logInButton
和signUpButton
,请确保它们在 XML 布局文件中也是这样命名的。 -
按钮点击监听器:您已经正确地将按钮的点击事件与
onClick
方法关联起来,但请确保您的FirstActivity
类位于正确的包中,以与 XML 文件中指定的包名一致。检查您的 Java 文件的包声明是否正确。 -
目标活动类:确保
LogIn
和SignUp
活动类存在,并且它们的名称与您在switchActivitiesLogIn
和switchActivitiesSignUp
方法中指定的一致。同时,确保它们也在 AndroidManifest.xml 文件中正确地声明了。 -
日志记录:您可以在
switchActivitiesLogIn
和switchActivitiesSignUp
方法内添加日志以检查是否成功调用了这些方法。例如,您可以在这些方法的开头添加以下代码:Log.d("MyApp", "Switching to LogIn or SignUp activity");
然后,在运行应用程序后,可以查看 Android Studio 的 Logcat 视图以查看是否看到这些日志消息。这可以帮助您确定是否成功调用了这些方法。
-
按钮可见性:确保按钮在屏幕上可见。如果其他视图覆盖了按钮,可能会导致按钮无法点击。您可以在布局文件中使用
android:visibility
属性来确保按钮可见。
如果您仍然遇到问题,建议您在 Logcat 中查看是否有任何错误消息或异常,以进一步诊断问题。如果您能提供更多关于错误消息或异常的信息,将有助于更精确地解决问题。
英文:
Why isn't my android studio app switching screens once a button is clicked?
whenever trying to press a button in order to switch to my next activity, the app does not respond.
package com.example.sceabblecalculator;
import androidx.appcompat.app.AppCompatActivity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
public class FirstActivity extends AppCompatActivity implements View.OnClickListener {
Button btnLogIn;
Button btnSignUp;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_first);
btnLogIn = findViewById(R.id.logInButton);
btnSignUp = findViewById(R.id.signUpButton);
btnLogIn.setOnClickListener(this);
btnSignUp.setOnClickListener(this);
}
@Override
public void onClick(View view) {
if (view.getId() == btnLogIn.getId()){
switchActivitiesLogIn();
}
if (view.getId() == btnSignUp.getId()){
switchActivitiesSignUp();
}
}
private void switchActivitiesLogIn() {
Intent switchActivityIntent = new Intent(this, LogIn.class);
startActivity(switchActivityIntent);
}
private void switchActivitiesSignUp() {
Intent switchActivityIntent = new Intent(this, SignUp.class);
startActivity(switchActivityIntent);
}
}
attaching my xml file:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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"
android:orientation="vertical"
android:gravity="center"
android:padding="16dp">
<Button
android:id="@+id/logInButton"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="32dp"
android:text="log in" />
<Button
android:id="@+id/signUpButton"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="16dp"
android:text="sign up" />
</LinearLayout>
The manifest file:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools">
<application
android:allowBackup="true"
android:dataExtractionRules="@xml/data_extraction_rules"
android:fullBackupContent="@xml/backup_rules"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/Theme.SceabbleCalculator"
tools:targetApi="31">
<activity
android:name=".FirstActivityGpt"
android:exported="false" />
<activity
android:name=".NewPlayerActivity"
android:exported="false" />
<activity
android:name=".PlayersActivity"
android:exported="false" />
<activity
android:name=".HomeScreen"
android:exported="false"
android:label="@string/title_activity_home_screen"
android:theme="@style/Theme.SceabbleCalculator" />
<activity
android:name=".HomeScreenActivity"
android:exported="false" />
<activity
android:name=".home_screen"
android:exported="false"
android:label="@string/title_activity_home_screen"
android:theme="@style/Theme.SceabbleCalculator" />
<activity
android:name=".GameActivity"
android:exported="false">
<meta-data
android:name="android.app.lib_name"
android:value="" />
</activity>
<activity
android:name=".SignUp"
android:exported="false">
<meta-data
android:name="android.app.lib_name"
android:value="" />
</activity>
<activity
android:name=".LogIn"
android:exported="false">
<meta-data
android:name="android.app.lib_name"
android:value="" />
</activity>
<activity
android:name=".MainActivity"
android:exported="true">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
<meta-data
android:name="android.app.lib_name"
android:value="" />
</activity>
</application>
</manifest>
Ran my entire code via chatGpt and they said my code doesn't contain any errors, but yet my buttons are unresponsive.
Thanks ahead!
答案1
得分: 1
你在 AndroidManifest.xml 文件中注册了登录活动和注册活动吗?
英文:
Have you register Login activity and signup activity in your AndroidManifest.xml file?
答案2
得分: 0
我个人觉得这个实现很令人困惑... 我会采取以下方法:
public class FirstActivity extends AppCompatActivity {
private Button btnLogIn;
private Button btnSignUp;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_first);
btnLogIn = findViewById(R.id.logInButton);
btnSignUp = findViewById(R.id.signUpButton);
btnLogIn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
switchActivitiesLogIn();
}
});
btnSignUp.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
switchActivitiesSignUp();
}
});
}
private void switchActivitiesLogIn() {
Intent switchActivityIntent = new Intent(this, LogIn.class);
startActivity(switchActivityIntent);
}
private void switchActivitiesSignUp() {
Intent switchActivityIntent = new Intent(this, SignUp.class);
startActivity(switchActivityIntent);
}
}
如果这不能解决您的问题,请在您的帖子中添加activity_first XML代码。
英文:
Personally, I find this implementation very confusing ... The approach that I would is the following:
public class FirstActivity extends AppCompatActivity {
private Button btnLogIn;
private Button btnSignUp;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_first);
btnLogIn = findViewById(R.id.logInButton);
btnSignUp = findViewById(R.id.signUpButton);
btnLogIn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
switchActivitiesLogIn();
}
});
btnSignUp.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
switchActivitiesSignUp();
}
});
}
private void switchActivitiesLogIn() {
Intent switchActivityIntent = new Intent(this, LogIn.class);
startActivity(switchActivityIntent);
}
private void switchActivitiesSignUp() {
Intent switchActivityIntent = new Intent(this, SignUp.class);
startActivity(switchActivityIntent);
}
}
If this doesn't solve your problem, please also add the activity_first XML code in your post.
答案3
得分: 0
我正在使用 viewBinding 来简化。您可以通过在 build.gradle(:app)
中添加以下代码来启用它。
android {
...
buildFeatures {
viewBinding true
}
}
FirstActivity.kt
import android.os.Bundle
import android.widget.Toast
import androidx.appcompat.app.AppCompatActivity
import com.umesh.testapp.databinding.ActivityFirstBinding
class FirstActivity : AppCompatActivity() {
lateinit var binding: ActivityFirstBinding
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
binding = ActivityFirstBinding.inflate(layoutInflater)
setContentView(binding.root)
binding.logInButton.setOnClickListener {
Toast.makeText(this, "logInButton click", Toast.LENGTH_LONG).show()
val switchLoginIntent = Intent(this, LogIn::class.java)
startActivity(switchLoginIntent)
}
binding.signUpButton.setOnClickListener {
Toast.makeText(this, "signUpButton click", Toast.LENGTH_LONG).show()
val switchSignUpIntent = Intent(this, SignUp::class.java)
startActivity(switchSignUpIntent)
}
}
}
activity_first.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:gravity="center"
android:padding="16dp">
<Button
android:id="@+id/logInButton"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="32dp"
android:text="log in" />
<Button
android:id="@+id/signUpButton"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="16dp"
android:text="sign up" />
</LinearLayout>
尝试这样做,如果仍然遇到问题,请告诉我。确保在 AndroidManifest.xml 文件中定义了 LogIn
和 SignUp
活动。
英文:
I am using viewBinding for simplicity. You can enable it by adding the below code in build.gradle(:app)
.
android {
...
buildFeatures {
viewBinding true
}
}
FirstActivity.kt
import android.os.Bundle
import android.widget.Toast
import androidx.appcompat.app.AppCompatActivity
import com.umesh.testapp.databinding.ActivityFirstBinding
class FirstActivity : AppCompatActivity() {
lateinit var binding: ActivityFirstBinding
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
binding = ActivityFirstBinding.inflate(layoutInflater)
setContentView(binding.root)
binding.logInButton.setOnClickListener {
Toast.makeText(this, "logInButton click", Toast.LENGTH_LONG).show()
val switchLoginIntent = Intent(this, LogIn::class.java)
startActivity(switchLoginIntent)
}
binding.signUpButton.setOnClickListener {
Toast.makeText(this, "signUpButton click", Toast.LENGTH_LONG).show()
val switchSignUpIntent = Intent(this, SignUp::class.java)
startActivity(switchSignUpIntent)
}
}
}
activity_first.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:gravity="center"
android:padding="16dp">
<Button
android:id="@+id/logInButton"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="32dp"
android:text="log in" />
<Button
android:id="@+id/signUpButton"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="16dp"
android:text="sign up" />
</LinearLayout>
Try this and let me know if still facing issue. Make sure to define LogIn
and SignUp
activity in AndroidManifest.xml file
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