通过剪切板传递数据—— 传递一个对象

1、三个类

MainActivity

package com.example.app.jianqiebanchuanzhi;

import android.content.ClipboardManager;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Base64;
import android.view.View;
import android.widget.Button;

import java.io.ByteArrayOutputStream;
import java.io.ObjectOutputStream;

public class MainActivity extends AppCompatActivity {

    private Button button;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        button = (Button)this.findViewById(R.id.button);
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                //从android系统中调用剪切板的服务
                //ClipboardManager clipboardManager = (ClipboardManager)getSystemService(Context.CLIPBOARD_SERVICE);
                //String name= "皇子-嘉文四世";
                //clipboardManager.setText(name);
               // Intent intent = new Intent(MainActivity.this,OtherActivity.class);
                //startActivity(intent);
                MyData myData = new MyData("jack",23);
                //将对象转换成字符串
                ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
                String base64String = "";
                try {
                    ObjectOutputStream objectOutputStream = new ObjectOutputStream(byteArrayOutputStream);
                    objectOutputStream.writeObject(myData);
                    base64String = Base64.encodeToString(byteArrayOutputStream.toByteArray(),Base64.DEFAULT);
                    objectOutputStream.close();
                }catch (Exception e){

                }
                ClipboardManager clipboardManager = (ClipboardManager)getSystemService(Context.CLIPBOARD_SERVICE);
                clipboardManager.setText(base64String);
                Intent intent = new Intent(MainActivity.this,OtherActivity.class);
                startActivity(intent);
            }
        });
    }
}

MyData

package com.example.app.jianqiebanchuanzhi;

import java.io.Serializable;

/**
 * Created by honghong on 2016/6/18.
 * Serializable 可序列花
 */
public class MyData implements Serializable {
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }

    public int getAge() {
        return age;
    }
    public void setAge(int age) {
        this.age = age;
    }

    private String name;
    private int age;

    public String toString(){
        return "MyData[name="+name+",age="+age+"]";
    }

    public MyData(String name,int age){
        this.name =name;
        this.age = age;
    }


}

OtherActivity

package com.example.app.jianqiebanchuanzhi;

import android.app.Activity;
import android.content.ClipboardManager;
import android.content.Context;
import android.os.Bundle;
import android.util.Base64;
import android.widget.TextView;

import java.io.ByteArrayInputStream;
import java.io.ObjectInputStream;

/**
 * Created by honghong on 2016/6/18.
 */
public class OtherActivity extends Activity{

    private TextView textView;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.other);
        textView = (TextView)this.findViewById(R.id.Msg);
        ClipboardManager clipboardManager = (ClipboardManager)getSystemService(Context.CLIPBOARD_SERVICE);
        String msgString = clipboardManager.getText().toString();

        //还原
        byte[] base64_byte = Base64.decode(msgString,Base64.DEFAULT);
        ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(base64_byte);
        try{
            ObjectInputStream objectInputStream = new ObjectInputStream(byteArrayInputStream);
            MyData myData = (MyData)objectInputStream.readObject();
            textView.setText(myData.toString());
        }catch (Exception e){}


    }
}

2、Layout 下面布局

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.example.app.jianqiebanchuanzhi.MainActivity">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Hello World!"
        android:id="@+id/textView" />

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="剪切板传递数据"
        android:id="@+id/button"
        android:layout_below="@+id/textView"
        android:layout_alignParentStart="true"
        android:layout_marginTop="55dp" />


</RelativeLayout>

other.xml

<?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">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/Msg"/>
</LinearLayout>

3、注册

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.app.jianqiebanchuanzhi">

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity android:name=".OtherActivity">
        </activity>
    </application>

</manifest>