上次给大家介绍了如何使用意图在Activity之间传递数据,这次讲解一下如何使用静态变量来传递数据,
原理其实很简单,就是在接收端的Avtivity里面设置static的变量,在发送端这边改变静态变量的值,然后启动意图。
效果图为:
发送端截图:
接收端截图:
那么就直接给代码了:
一、MainActivity.java
- package com.intent.activity;
- import android.app.Activity;
- import android.content.Intent;
- import android.os.Bundle;
- import android.view.View;
- import android.view.View.OnClickListener;
- import android.widget.Button;
- public class MainActivity extends Activity {
- private Button btn;
- @Override
- public void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- setContentView(R.layout.main);
- btn = (Button)findViewById(R.id.btOpenOtherActivity);
- btn.setOnClickListener(new OnClickListener() {
- @Override
- public void onClick(View v) {
- //定义一个意图
- Intent intent = new Intent(MainActivity.this,OtherActivity.class);
- //改变OtherActivity的三个静态变量的值
- OtherActivity.name = "wulianghuan";
- OtherActivity.age = "22";
- OtherActivity.address = "上海闵行";
- startActivity(intent);
- }
- });
- }
- }
二、OtherActivity.java
- package com.intent.activity;
- import android.app.Activity;
- import android.os.Bundle;
- import android.view.View;
- import android.view.View.OnClickListener;
- import android.widget.Button;
- import android.widget.TextView;
- public class OtherActivity extends Activity {
- public static String name;
- public static String age;
- public static String address;
- private TextView text_name;
- private TextView text_age;
- private TextView text_address;
- @Override
- public void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- setContentView(R.layout.other);
- text_name = (TextView) findViewById(R.id.name);
- text_age = (TextView) findViewById(R.id.age);
- text_address = (TextView) findViewById(R.id.address);
- //设置文本框的数据
- text_name.setText("姓名:"+name);
- text_age.setText("年龄:"+age);
- text_address.setText("地址:"+address);
- }
- }
布局文件
三、main.xml
- <?xml version="1.0" encoding="utf-8"?>
- <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
- android:layout_width="fill_parent"
- android:layout_height="fill_parent"
- android:orientation="vertical" >
- <TextView
- android:layout_width="fill_parent"
- android:layout_height="wrap_content"
- android:text="这是:MainActivity" />
- <Button
- android:layout_width="wrap_content"
- android:layout_height="wrap_content"
- android:id="@+id/btOpenOtherActivity"
- android:text="使用静态变量传递数据"/>
- </LinearLayout>
四、other.xml
- <?xml version="1.0" encoding="utf-8"?>
- <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
- android:layout_width="fill_parent"
- android:layout_height="fill_parent"
- android:orientation="vertical" >
- <TextView
- android:layout_width="fill_parent"
- android:layout_height="wrap_content"
- android:text="这是:MainActivity" />
- <Button
- android:layout_width="wrap_content"
- android:layout_height="wrap_content"
- android:id="@+id/btOpenOtherActivity"
- android:text="使用意图传递数据"/>
- </LinearLayout>
转载于:https://blog.51cto.com/mrwlh/1134197