1.在已经创建的java文件MainActivity(点击app,点击java)下里面编写
package com.example.myapplication1120;
import android.content.Intent;
import android.os.Bundle;
import androidx.appcompat.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);//调用xml中activity_main。
Button ok = (Button) this.findViewById(R.id.btn);
ok.setOnClickListener(new ButtonListener());
}
private class ButtonListener implements View.OnClickListener{
@Override
public void onClick(View v){
Intent intent=new Intent(MainActivity.this,TwoActivity.class);//设置切换对应activity
startActivity(intent);//开始切换
}
}
}
2.在activity_main.xml(打开app,打开res,在layout下)里面编写
<?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">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="30dp"
android:layout_marginBottom="60dp"
android:text="第二页"
android:layout_gravity="center_horizontal"/>
</LinearLayout>
3.新建一个layout Resource File(打开app,打开res,在layout下新建一个layout Resource File)命名为twolayout,在里面编写
<?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">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="30dp"
android:layout_marginBottom="60dp"
android:text="第二页"
android:layout_gravity="center_horizontal"/>
</LinearLayout>
4.新建一个java文件(在app下,在java下,在com.example…………命名为TwoActivity,在里面编写
package com.example.myapplication1120;
import android.os.Bundle;
import androidx.appcompat.app.AppCompatActivity;
public class TwoActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.twolayout);//调用twolayout
}}
5.在AndroidManifest中添加
<activity android:name=".TwoActivity"></activity>
添加的位置在<application与</application>之间
6.点击运行
7.实现呐