24 AIDL案例

2022-01-17 00:09:55

服务端

MainActivity.java

package com.qf.day24_aidl_wordserver;

import android.app.Activity;

import android.database.Cursor;

import android.os.Bundle;

import android.view.View;

import android.widget.EditText;

import android.widget.ListView;

import android.widget.SimpleCursorAdapter;

public class MainActivity extends Activity {

    private EditText etEn,etCh;

    private ListView lv;

    private MyOpenDbHelper helper;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        //初始化View

        initView();

        helper = new MyOpenDbHelper(getApplicationContext());

        getData();

    }

    public void initView() {

        etEn = (EditText) findViewById(R.id.et_en);

        etCh = (EditText) findViewById(R.id.et_ch);

        lv = (ListView) findViewById(R.id.lv);

    }

    //点击进行保存

    public void saveClick(View v){

        String etEnStr = etEn.getText().toString().trim();

        String etChStr = etCh.getText().toString().trim();

        String sql = "insert into tb_words(word,detail) values(?,?)";

        //添加数据到数据库

        helper.execSqlData(sql, new String[]{etEnStr,etChStr});

        getData();

    }

    //查询数据展示到LIstVIew

    public void getData(){

        String sql = "select * from tb_words";

        Cursor cursor = helper.queryData(sql, null);

        SimpleCursorAdapter adapter = new SimpleCursorAdapter

                (MainActivity.this,

                        R.layout.item,

                        cursor,

                        new String[]{"word","detail"},

                        new int[]{R.id.tv_en,R.id.tv_ch},

                        SimpleCursorAdapter.FLAG_REGISTER_CONTENT_OBSERVER);

        lv.setAdapter(adapter);

    }

}

MyOpenDbHelper.java

package com.qf.day24_aidl_wordserver;

import java.util.ArrayList;

import java.util.HashMap;

import java.util.List;

import java.util.Map;

import android.content.Context;

import android.database.Cursor;

import android.database.sqlite.SQLiteDatabase;

import android.database.sqlite.SQLiteDatabase.CursorFactory;

import android.database.sqlite.SQLiteOpenHelper;

public class MyOpenDbHelper extends SQLiteOpenHelper{

    private static final String NAME ="db_words.db";

    private static final int VERSION =1;

    private SQLiteDatabase db ;

    public MyOpenDbHelper(Context context, String name, CursorFactory factory,

            int version) {

        super(context, name, factory, version);

        // TODO Auto-generated constructor stub

    }

    public MyOpenDbHelper(Context context) {

        super(context, NAME, null, VERSION);

        // TODO Auto-generated constructor stub

        db = getReadableDatabase();

    }

    @Override

    public void onCreate(SQLiteDatabase db) {

        // TODO Auto-generated method stub

        String sql ="create table if not exists tb_words(_id integer primary key autoincrement,word,detail)";

        db.execSQL(sql);

    }

    @Override

    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {

        // TODO Auto-generated method stub

    }

    //查询

    public Cursor queryData(String sql, String[] selectionArgs){

        return db.rawQuery(sql, selectionArgs);

    }

    // 增 删改

    public boolean execSqlData(String sql, Object[] bindArgs){

        try {

            if(bindArgs!=null){

                db.execSQL(sql, bindArgs);

            }else{

                db.execSQL(sql);

            }

            return true;

        } catch (Exception e) {

            // TODO: handle exception

            return false;

        }

    }

    //查询所有数据  返回List<>

    public List<Map<String,Object>> selectData(String sql, String[] selectionArgs){

        List<Map<String,Object>> list = new ArrayList<Map<String,Object>>();

        Cursor cusor = db.rawQuery(sql, selectionArgs);

        while(cusor.moveToNext()){

            Map<String,Object> map = new HashMap<String, Object>();

            for(int i=0;i<cusor.getColumnCount();i++){

                map.put(cusor.getColumnName(i), cusor.getString(i));

            }

            list.add(map);

        }

        return list;

    }

}

MyService.java

package com.qf.day24_aidl_wordserver;

import java.util.List;

import java.util.Map;

import android.app.Service;

import android.content.Intent;

import android.os.IBinder;

import android.os.RemoteException;

import com.qf.day24_aidl_wordserver.MyInterfaceWord.Stub;

public class MyService extends Service{

    private MyOpenDbHelper helper;

    @Override

    public IBinder onBind(Intent intent) {

        // TODO Auto-generated method stub

        return new MyBinder();

    }

    class MyBinder extends Stub{

        @Override

        public String getValues(String word) throws RemoteException {

            // TODO Auto-generated method stub

            String sql = "select * from tb_words where word = ?";

            List<Map<String, Object>> list = helper.selectData(sql, new String[]{word});

            return list.toString();

        }

    }

    @Override

    public void onCreate() {

        // TODO Auto-generated method stub

        super.onCreate();

        helper = new MyOpenDbHelper(getApplicationContext());

    }

    @Override

    public boolean onUnbind(Intent intent) {

        // TODO Auto-generated method stub

        return super.onUnbind(intent);

    }

    @Override

    public void onDestroy() {

        // TODO Auto-generated method stub

        super.onDestroy();

    }

}

MyInterfaceWord.aidl

package com.qf.day24_aidl_wordserver;

 interface MyInterfaceWord {

    String getValues(String word);

}

清单文件

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

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

    package="com.qf.day24_aidl_wordserver"

    android:versionCode="1"

    android:versionName="1.0" >

    <uses-sdk

        android:minSdkVersion="14"

        android:targetSdkVersion="18" />

    <application

        android:allowBackup="true"

        android:icon="@drawable/ic_launcher"

        android:label="@string/app_name"

        android:theme="@style/AppTheme" >

        <activity

            android:name="com.qf.day24_aidl_wordserver.MainActivity"

            android:label="@string/app_name" >

            <intent-filter>

                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />

            </intent-filter>

        </activity>

        <service android:name=".MyService">

            <intent-filter >

                <action android:name="com.qf.day24_aidl_wordserver.MyService"/>

            </intent-filter>

        </service>

    </application>

</manifest>

布局文件

activity_main.xml

<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:orientation="vertical"

    tools:context=".MainActivity" >

    <EditText

        android:id="@+id/et_en"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:hint="请输入英文..." />

    <EditText

        android:id="@+id/et_ch"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:hint="请输入中文..." />

    <Button

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:onClick="saveClick"

        android:text="保存"

        />

    <TextView

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:background="#00ff00"

        android:text="以下展示内容"

        />

    <ListView

        android:id="@+id/lv"

        android:layout_width="match_parent"

        android:layout_height="match_parent"

        ></ListView>

</LinearLayout>

item.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"

    android:orientation="vertical" >

    <TextView

        android:id="@+id/tv_en"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="tv"

        android:textColor="#f00"

        />

    <TextView

        android:id="@+id/tv_ch"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="tv"

        android:textColor="#00f"

        />

</LinearLayout>

客户端

MainActivity.java

package com.qf.day24_aidl_wordclient;

import com.qf.day24_aidl_wordserver.MyInterfaceWord;

import com.qf.day24_aidl_wordserver.MyInterfaceWord.Stub;

import android.app.Activity;

import android.content.ComponentName;

import android.content.Context;

import android.content.Intent;

import android.content.ServiceConnection;

import android.os.Bundle;

import android.os.IBinder;

import android.os.RemoteException;

import android.view.View;

import android.widget.EditText;

import android.widget.TextView;

public class MainActivity extends Activity {

    private EditText etWord;

    private TextView tvShow;

    private MyInterfaceWord myInterfaceWord;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        etWord = (EditText) findViewById(R.id.et_word);

        tvShow = (TextView) findViewById(R.id.tv_show);

        ServiceConnection conn = new ServiceConnection() {

            @Override

            public void onServiceDisconnected(ComponentName name) {

                // TODO Auto-generated method stub

            }

            @Override

            public void onServiceConnected(ComponentName name, IBinder service) {

                // TODO Auto-generated method stub

                myInterfaceWord = Stub.asInterface(service);

            }

        };

        Intent intent = new Intent("com.qf.day24_aidl_wordserver.MyService");

        //6.0必须加上

        intent.setPackage("com.qf.day24_aidl_wordserver");

        bindService(intent, conn, Context.BIND_AUTO_CREATE);

    }

    public void MyClick(View v){

        try {

            String str = myInterfaceWord.getValues(etWord.getText().toString().trim());

            tvShow.setText(str);

        } catch (RemoteException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        }

    }

}

MyInterfaceWord .java

package com.qf.day24_aidl_wordserver;

 interface MyInterfaceWord {

    String getValues(String word);

}

AndroidManifest.xml 清单文件

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

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

    package="com.qf.day24_aidl_wordclient"

    android:versionCode="1"

    android:versionName="1.0" >

    <uses-sdk

        android:minSdkVersion="8"

        android:targetSdkVersion="18" />

    <application

        android:allowBackup="true"

        android:icon="@drawable/ic_launcher"

        android:label="@string/app_name"

        android:theme="@style/AppTheme" >

        <activity

            android:name="com.qf.day24_aidl_wordclient.MainActivity"

            android:label="@string/app_name" >

            <intent-filter>

                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />

            </intent-filter>

        </activity>

    </application>

</manifest>

activity_main.xml

<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:orientation="vertical"

    tools:context=".MainActivity" >

    <EditText

        android:id="@+id/et_word"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:hint="请输入查询内容" />

    <Button

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="查询"

        android:onClick="MyClick"

        />

    <TextView

        android:id="@+id/tv_show"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        />

</LinearLayout>

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客户端

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