Android: Using Bundle for IPC and androidbundleipc

Android: Using Bundle for IPC and androidbundleipc
I. Introduction of Bundle to IPC

The three components (Activity, Service, and consumer ER) of the four major components support the transfer of Bundle data in Intent. Because Bundle implements the Parcelable interface, therefore, it can be easily transmitted between different processes. Of course, the transmitted data must be serialized, such as basic types, objects that implement the Parcelable interface, objects that implement the Serializable interface, and some special objects supported by Android, for details, you can see the Bundle class to see all the types it supports. Bundle does not support data transmission between processes.

Ii. Usage 1. Package data for sending

Intent intent1 = new Intent(MainActivity.this, ThirdActivity.class);Bundle bundle = new Bundle();bundle.putCharSequence("name", "zhangmiao");bundle.putInt("age", 20);intent1.putExtras(bundle);startActivity(intent1);

2. Accept data

Intent intent = getIntent();Bundle bundle = intent.getExtras();String name = bundle.getString("name");int age = bundle.getInt("age");

3. Enable multi-process in AndroidManifest. xml

<activity   ...   android:process=":remote" />

Iii. Case 1. Modify the activity_main.xml File

<?xml version="1.0" encoding="utf-8"?><LinearLayout    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:fitsSystemWindows="true"    tools:context="com.zhangmiao.ipcdemo.MainActivity"    android:orientation="vertical"    >    <TextView        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_gravity="center_horizontal"        android:text="Bundler">    </TextView>    <Button        android:id="@+id/bundler_button"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="send message">    </Button></LinearLayout>

2. Add the activity_third.xml File

<?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_gravity="center_horizontal"        android:text="at activity Third" />    <TextView        android:id="@+id/textView1"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="Activity Third" /></LinearLayout>

3. Add ThirdActivity class

package com.zhangmiao.ipcdemo;import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.widget.TextView;/** * Created by zhangmiao on 2016/12/27. */public class ThirdActivity extends Activity {    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_third);        Intent intent = getIntent();        Bundle bundle = intent.getExtras();        String name = bundle.getString("name");        int age = bundle.getInt("age");        TextView textView = (TextView) findViewById(R.id.textView1);        textView.setText("name:" + name + ",age:" + age);    }}

4. Modify the MainActivity class

package com.zhangmiao.ipcdemo;import android.content.ComponentName;import android.content.Context;import android.content.Intent;import android.content.ServiceConnection;import android.os.Bundle;import android.os.Handler;import android.os.IBinder;import android.os.Message;import android.os.Messenger;import android.os.RemoteException;import android.support.v7.app.AppCompatActivity;import android.util.Log;import android.view.View;import android.widget.Button;import android.widget.TextView;import java.io.File;import java.io.FileOutputStream;import java.io.IOException;import java.io.ObjectOutputStream;import java.io.Serializable;public class MainActivity extends AppCompatActivity {    private static final String TAG = "MainActivity";    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        Button button = (Button) findViewById(R.id.bundler_button);        button.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                Intent intent1 = new Intent(MainActivity.this, ThirdActivity.class);                Bundle bundle = new Bundle();                bundle.putCharSequence("name", "zhangmiao");                bundle.putInt("age", 20);                intent1.putExtras(bundle);                startActivity(intent1);            }        });    }}

5. Modify the AndroidManifest. xml file

<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android"    package="com.zhangmiao.ipcdemo">    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />    <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"            android:label="@string/app_name"            android:launchMode="standard"            android:theme="@style/AppTheme.NoActionBar">            <intent-filter>                <action android:name="android.intent.action.MAIN" />                <category android:name="android.intent.category.LAUNCHER" />            </intent-filter>        </activity>        <activity            android:name=".ThirdActivity"            android:configChanges="screenLayout"            android:label="@string/app_name"            android:process=":remote" />    </application></manifest>

Full: https://github.com/ZhangMiao147/IPCDemo