一、传递基本类型数据

（一）编辑MainActivity

• 代码：

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;

public class MainActivity extends AppCompatActivity {
   
    Button btn_submit;
    EditText name_edit;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
   
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        btn_submit = (Button) findViewById(R.id.btn_submit);
        name_edit = (EditText) findViewById(R.id.name_edit);
        btn_submit.setOnClickListener(new View.OnClickListener() {
   
            @Override
            public void onClick(View v){
   
                Intent intent = new Intent();
                intent.setClass(MainActivity.this,InfoActivity.class);
                String name = name_edit.getText().toString();
                intent.putExtra("name",name);
                startActivity(intent);
            }
        });
    }
}

（二）编辑InfoActivity

• 代码：

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.widget.TextView;

public class InfoActivity extends AppCompatActivity {
   
    TextView infoshow;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
   
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_info);
        infoshow = (TextView) findViewById(R.id.infoshow);
        Bundle bundle = getIntent().getExtras();
        String name = bundle.getString("name");
        infoshow.setText(name);
    }
}

（三）布局

• activity_main.xml：

<?xml version="1.0" encoding="utf-8"?>
<AbsoluteLayout
    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"
    tools:context=".MainActivity">

    <EditText
        android:id="@+id/name_edit"
        android:layout_width="match_parent"
        android:layout_height="43dp"
        tools:layout_editor_absoluteX="156dp"
        tools:layout_editor_absoluteY="64dp"
        android:hint="  姓名"
        tools:ignore="MissingConstraints" />

    <Button
        android:id="@+id/btn_submit"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_x="268dp"
        android:layout_y="209dp"
        android:text="查看"
        tools:ignore="MissingConstraints"
        tools:layout_editor_absoluteX="161dp"
        tools:layout_editor_absoluteY="123dp"
        android:layout_weight="1"/>
</AbsoluteLayout>

• activity_info.xml:

<?xml version="1.0" encoding="utf-8"?