英文:
How to make android XML or Kotlin button take me to my other activity in XML?
问题
我没有一个 Java 文件,原因不明。我有一个 Kotlin 中的 "Main Activity"。因此,我想知道是否能够添加一个按钮,当点击它时,可以跳转到我的另一个活动。
这是主活动的代码:
package com.example.wedapp
import android.content.Intent
import android.os.Bundle
import androidx.appcompat.app.AppCompatActivity
class MainActivity : AppCompatActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.main)
}
}
这是我创建的另一个活动,应该打开 pg 活动:
package com.example.wedapp
import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
class pg1 : AppCompatActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.pg1)
}
}
我有以下文件:
- layout\main.xml
- layout\pg1.xml
MainActivity 是一个 Kotlin 类,pg1 也是一个 Kotlin 文件。
英文:
I don't have a java file for some reason. i have a "Main Activity" in Kotlin. Hence i was wondering if i would be able to add a button which on click takes me to my other activity?
heres the main activity code :
import android.content.Intent
import android.os.Bundle
import androidx.appcompat.app.AppCompatActivity
import androidx.core.content.ContextCompat.startActivity
class MainActivity : AppCompatActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.main)
} }
here's the other activity i made which should open the pg activity :
import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
class pg1 : AppCompatActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.pg1)
} }
the files i have :
layout\main.xml and layout\pg1.xml
MainActivity is a kotlin clss and pg1 is a kotlin file
答案1
得分: 0
你需要创建第二个活动,它将在按钮点击时打开。
以下是如何在编程中实现的示例代码
button = (Button) findViewById(R.id.button);
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
openNewActivity();
}
});
public void openNewActivity(){
Intent intent = new Intent(this, NewActivity.class);
startActivity(intent);
}
英文:
You need to create second activity which will be opened on button click
Here's how you can do in coding
button = (Button) findViewById(R.id.button);
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
openNewActivity();
}
});
public void openNewActivity(){
Intent intent = new Intent(this, NewActivity.class);
startActivity(intent);
}
答案2
得分: 0
将一个按钮添加到你的main.xml文件中,然后给它一个像"switch_scene"的ID。
然后进入你的主活动(main activity)并输入以下代码:
假设你已启用Kotlin扩展,它允许你直接从XML引用ID。
switch_scene.setOnClickListener {
val newIntent = Intent(this, pg1::class.java)
startActivity(newIntent)
}
请原谅我如果我犯了错误,你知道我在手机上编码,因为我不在家。
英文:
Add a button first to your main.xml, then give it an id like "switch_scene"..
Then go to your main activity and type the code
Am assuming you have kotlin extension enabled.. that allows you to reference IDs from xml directly..
.
switch_scene.addOnClickListener{
val newIntent= Intent(this, pg1::class.java)
startActivity (newIntent)
}
Forgive me if I made mistakes.. am coding with my phone you see as I am not at home.
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