携带数据跳转

最新推荐文章于 2023-09-27 20:29:46 发布

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最新推荐文章于 2023-09-27 20:29:46 发布

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文章标签： android

本文链接：https://blog.youkuaiyun.com/weixin_45472170/article/details/106857160

版权

实现从A页面携带数据传输到B页面
activity_a 在这里插入图片描述

activity_a.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent" android:layout_height="match_parent"
    >
    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="跳转到B页面"
        android:id="@+id/forward_b"
        android:layout_marginStart="32dp"
        android:layout_marginBottom="47dp"
        android:layout_alignParentBottom="true"
        android:layout_alignParentStart="true" />

      <EditText
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/et1"
        android:hint="请输入数据"
        />

    <EditText
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:inputType="textEmailAddress"
        android:ems="10"
        android:id="@+id/et2"
        android:layout_below="@+id/et1"
        android:layout_alignParentStart="true"
        android:hint="请输入邮箱"/>

    <EditText
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:inputType="phone"
        android:ems="10"
        android:id="@+id/et3"
        android:layout_below="@+id/et2"
        android:layout_alignParentStart="true"
        android:hint="请输入电话号码"/>

</RelativeLayout>

activity_b

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent" android:layout_height="match_parent"
    >
    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="这是默认文本"
        android:id="@+id/tv1"
        android:layout_alignParentTop="true"
        android:layout_alignParentStart="true" />
</RelativeLayout>

ActivityA

import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
public class ActivityA extends AppCompatActivity {

    private Button forward_b;
    private EditText et1,et2,et3;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_a);//1.绑定页面a
        
        forward_b = (Button) findViewById(R.id.forward_b);
        et1 = (EditText) findViewById(R.id.et1);
        et2 = (EditText) findViewById(R.id.et2);
        et3 = (EditText) findViewById(R.id.et3);

        forward_b.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                //2.创建Intent对象
                Intent i = new Intent(ActivityA.this,ActivityB.class);
                //携带数据，方式一
                //i.putExtra("et1_msg",et1.getText().toString());
                
                //方式二
                Bundle datas = new Bundle();
                datas.putString("et1_msg",et1.getText().toString());
                datas.putString("et2_msg",et2.getText().toString());
                datas.putString("et3_msg",et3.getText().toString());
                //设置到Intent对象
                i.putExtras(datas);
                //3.跳转到b页面
                startActivity(i);
            }
        });
    }
}

ActivityB


import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.widget.TextView;

public class ActivityB extends AppCompatActivity {

    private TextView tv1;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_b);//1.绑定页面b

        tv1 = (TextView) findViewById(R.id.tv1);

        //接受A页面传来的数据，并显示到TextView里
        Intent i = this.getIntent();
        //取数据,方式一
        //String et1_msg = i.getStringExtra("et1_msg");

        //方式二
        Bundle datas = i.getExtras();
        String et1_msg = datas.getString("et1_msg");
        String et2_msg = datas.getString("et2_msg");
        String et3_msg = datas.getString("et3_msg");

        tv1.setText(et1_msg+","+et2_msg+","+et3_msg);
    }
}

配置

<activity android:name=".ActivityA">
    <intent-filter>
        <action android:name="android.intent.action.MAIN" />
        <category android:name="android.intent.category.LAUNCHER" />
    </intent-filter>
</activity>
<activity android:name=".ActivityB">
</activity>