安卓工作室按钮带我去错误的活动

Question

我对Android Studio比较陌生，这是我的第二个项目。我目前遇到了一个问题，当我运行我的应用程序时，当我单击主菜单活动上的create_account按钮时，这个问题最近才出现。出于某种原因，它将我发送到我的ViewlogActivity。当我单击我的查看日志按钮时，它什么也不做。 我仔细检查了我的意图，并在我的清单文件中进行了这两项活动。这是怎么回事？

我的代码：

Manifest File:                                                     
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
s<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<!--        <activity-->
<!--        android:name=".CreateAccountActivity"-->
<!--        android:theme="@style/AppTheme.NoActionBar">-->
<!--        <intent-filter>-->
<!--            <action android:name="android.intent.action.MAIN" />-->
<!--            <category android:name="android.intent.category.DEFAULT" />-->
<!--        </intent-filter>-->
<!--    </activity>-->
<activity
android:name=".CreateAccountActivity2"
android:theme="@style/AppTheme.NoActionBar">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
<activity
android:name=".ViewLogActivity"
android:theme="@style/AppTheme.NoActionBar">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>

<activity
android:name=".LoginActivity"
android:theme="@style/AppTheme.NoActionBar">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
<activity
android:name=".LogoutActivity"
android:theme="@style/AppTheme.NoActionBar">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
</application>


**Main Activity Buttons:** 
Button create_account_button = findViewById(R.id.create_account);
create_account_button.setOnClickListener(new View.OnClickListener(){
@Override
public void onClick(View v) {
// call the create account activity
Log.d("MainActivity", "onClick for create account called");
Intent intent = new Intent(MainActivity.this, CreateAccountActivity2.class);
startActivity(intent);
}
});

Button login_button = findViewById(R.id.login);
login_button.setOnClickListener(new View.OnClickListener(){
@Override
public void onClick(View v) {
// call the login Activity
Log.d("Login", "onClick for login activity called");
Intent intent = new Intent(MainActivity.this, LoginActivity.class);
startActivity(intent);
}
});

Button logout_button = findViewById(R.id.logout);
logout_button.setOnClickListener(new View.OnClickListener(){
@Override
public void onClick(View v) {
// call the logout Activity
Log.d("Logout", "onClick for logout activity called");
Intent intent = new Intent(MainActivity.this, LogoutActivity.class);
startActivity(intent);
}
});
Button view_logs_button = findViewById(R.id.viewlogs);
create_account_button.setOnClickListener(new View.OnClickListener(){
@Override
public void onClick(View v) {
// call the view log activity
Log.d("MainActivity", "onClick for view log called");
Intent intent = new Intent(MainActivity.this, ViewLogActivity.class);
startActivity(intent);
}
});

Button exit_button = findViewById(R.id.exit);
exit_button.setOnClickListener(new View.OnClickListener(){
// call to exit the application
@Override
public void onClick(View v) {
Log.d("Exit", "onClick for exit called");
finish();
}
});

**Main Activity XML layout File:** 
<TextView
android:layout_width="match_parent"
android:layout_height="100dp"
android:scaleX="2"
android:scaleY="2"
android:gravity="center"
android:text="Main Menu"/>

<Button
android:id="@+id/create_account"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_horizontal"
android:text="Create Account" />
<Button
android:id="@+id/login"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Login"
android:gravity="center_horizontal"
/>

<Button
android:id="@+id/logout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Logout"
android:gravity="center_horizontal"
/>
<Button
android:id="@+id/viewlogs"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_horizontal"
android:text="View Logs" />
<Button
android:id="@+id/exit"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Exit"
android:gravity="center_horizontal"
/>

Answer 1

问题在这里 -

您获得的 ID 为view_logs_button但应用 单击create_account_button(您在create_account_button上应用 CLICL 侦听器 2 次，因此它需要最新的点击侦听器(并重定向到ViewLogActivity.

Button view_logs_button = findViewById(R.id.viewlogs);
create_account_button.setOnClickListener(new View.OnClickListener(){
@Override
public void onClick(View v) {
// call the view log activity
Log.d("MainActivity", "onClick for view log called");
Intent intent = new Intent(MainActivity.this, ViewLogActivity.class);
startActivity(intent);
}
});

要解决此问题，请在如下所示view_logs_button上应用单击侦听器 -

Button view_logs_button = findViewById(R.id.viewlogs);
view_logs_button.setOnClickListener(new View.OnClickListener(){
@Override
public void onClick(View v) {
// call the view log activity
Log.d("MainActivity", "onClick for view log called");
Intent intent = new Intent(MainActivity.this, ViewLogActivity.class);
startActivity(intent);
}
});

希望这对你有帮助！！