⑴ android app数据监测用什么软件有吗
android app数据监测可以用极光。公司极光自成立以来专注于为app开发者提供稳定高效的消息推送、丰富数据检测,统计分析、即时通讯、社会化分享组件和短信等开发者服务。⑵ android婧愮爜閲屽摢浜涘湴鏂圭敤鍒颁简瑙傚疗钥呮ā寮
1. Subject琚瑙傚疗钥呫傛槸涓涓鎺ュ彛鎴栬呮槸鎶借薄绫伙纴瀹氢箟琚瑙傚疗钥呭繀椤诲疄鐜扮殑镵岃矗锛屽畠蹇呴’鑳藉伓锷ㄦ佸湴澧炲姞銆佸彇娑堣傚疗钥咃纴绠$悊瑙傚疗钥呭苟阃氱煡瑙傚疗钥呫
2. Observer瑙傚疗钥呫傝傚疗钥呮帴鏀跺埌娑堟伅钖庯纴鍗宠繘琛寀pdate镟存柊镎崭綔锛屽规帴鏀跺埌镄勪俊鎭杩涜屽勭悊銆
3. ConcreteSubject鍏蜂綋镄勮瑙傚疗钥呫傚畾涔夎瑙傚疗钥呰嚜宸辩殑涓氩姟阃昏緫锛屽悓镞跺畾涔夊瑰摢浜涗簨浠惰繘琛岄氱煡銆
4. ConcreteObserver鍏蜂綋瑙傚疗钥呫傛疮涓瑙傚疗钥呭湪鎺ユ敹鍒颁俊鎭钖庡勭悊镄勬柟寮忎笉钖岋纴钖勪釜瑙傚疗钥呮湁镊宸辩殑澶勭悊阃昏緫銆
瑙傚疗钥呮ā寮忔湁浠涔堜紭镣瑰憿锛
瑙傚疗钥呭拰琚瑙傚疗钥呬箣闂存槸鎶借薄钥﹀悎镄勶纴涓岖℃槸澧炲姞瑙傚疗钥呰缮鏄琚瑙傚疗钥呴兘闱炲父瀹规槗镓╁𪾢銆
镙规嵁鍗曚竴镵岃矗铡熷垯锛屾疮涓绫荤殑镵岃矗鏄鍗曚竴镄勶纴闾d箞镐庝箞鎶婂悇涓鍗曚竴镄勮亴璐d覆镵旀垚鐪熷疄镄勫嶆潅镄勯昏緫鍏崇郴锻锛岃傚疗钥呮ā寮忓彲浠ヨ捣鍒版ˉ姊佷綔鐢ㄣ
瑙傚疗钥呮ā寮忔槸𨱒捐﹀悎镄勫吀鍨嬨
鍦ˋndroid婧愮爜涓锛屽叾涓涓涓缁忓吀镄勪娇鐢ㄥ埌瑙傚疗钥呮ā寮忕殑灏辨槸Android鎺т欢镄勪簨浠剁洃钖妯″瀷銆
⑶ Android 开发中常用到的设计模式有哪些
设计模式总共是23种,常用的有下面几种 :
1 单例模式,application 就是单例 可以存储一些数据例如记录activity的启动数量 ;
2 观察者模式: button的onClickListener ,监听button的响应;
3 适配器模式 :例如recyclerView 的adapter ;
4 命令模式: 例如开源库eventBus ,把数据封装好 发送出去,然后接收; 等等等等,很多
⑷ android鍐呭硅傚疗钥呮湁鍝浜
𨰾︽埅鐭淇★纴姣斿傚綋鍙戠煭淇$殑镞跺欙纴灏辨妸鐭淇¤诲彇鍑烘潵锛屽綋绯荤粺镄勭煭淇″彂鐢熷彉鍖栫殑镞跺欙纴澶у彨涓澹帮纴鎶婃暟鎹鍙戦佸埌鍏鍏辩殑娑堟伅闾绠遍噷闱锛屾垜浠镄勫簲鐢ㄩ氲繃鍐呭硅傚疗钥呰傚疗鍏鍏辩殑娑堟伅闾绠
銮峰彇ContentResolver瀵硅薄锛岃皟鐢ㄥ嚱鏁癵etContentResolver()锛
璋幂敤ContentResolver瀵硅薄镄
registerContentObserver(uri,notifyForDescendents,observer)鏂规硶锛屽弬鏁帮细Uri瀵硅薄锛屾槸钖
绮剧‘uri锛坱rue涓岖簿纭锛宖alse绮剧‘锛夛纴observer瀵硅薄 ContentObserver瀵硅薄
锲犱负ContentObserver鏄鎶借薄绫伙纴锲犳ゆ垜浠鍐欎竴涓鍐呴儴绫绘潵缁ф圹杩欎釜鎶借薄绫伙纴蹇呴’瀹炵幇鏋勯犲嚱鏁帮纴鏋勯犲嚱鏁扮殑Handler瀵硅薄娑堟伅澶勭悊鍣
绋嶅悗浼氲诧纴瀹氢箟涓涓鍐呴儴绫籑yObserver锛屽疄鐜扮埗绫荤殑onChange()锲炶皟鏂规硶锛岃傚疗鍒版秷鎭闾绠卞彂鐢熷彉鍖栫殑镞跺欎细锲炶皟杩欎釜鏂规硶銆
鍦ㄨ繖涓锲炶皟鍑芥暟閲岄溃锛屼娇鐢ㄨ幏鍙栧埌鐭淇″唴瀹癸纴鍙栨渶钖庝竴𨱒★纴璋幂敤Cursor瀵硅薄镄刴oveToFirst()鎸囬拡鎸囧悜链钖庝竴𨱒
绯荤粺搴旂敤鏄濡备綍鍙戝嚭杩欎釜鍙澹扮殑锻锛岃幏鍙朇ontentResolver瀵硅薄锛岄氲繃getContentResolver()鏂规硶锛岃皟鐢
ContentResolver瀵硅薄镄刵otifyChange(uri,observer)鏂规硶锛屽弬鏁帮细uri闅忎究瀹氢箟锛宱bserver鎸囧畾璋佸勭悊榛
璁null
绯荤粺镄勫緢澶氩簲鐢ㄨ繘琛岄氱煡阃氢俊閮芥槸阃氲繃杩欎釜鍏鍏辨秷鎭闾绠辨満鍒舵潵瀹炵幇镄
鎺ヤ笅𨱒ュ疄鎴树竴涓嬶纴鎺ョ潃銆夹ndroid 鍐呭规彁渚涜呯殑瀹炵幇銆嬩腑浣跨敤镄勯”鐩浣滀负锘虹锛屾柊寤轰竴涓椤圭洰锛屽苟娣诲姞浠g爜濡备笅锛
package com.wuyudong.observer;
import android.net.Uri;
import android.os.Bundle;
import android.os.Handler;
import android.app.Activity;
import android.content.ContentResolver;
import android.content.Context;
import android.database.ContentObserver;
import android.view.Menu;
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Uri uri = Uri.parse("content://com.wuyudong.db.personprovider/");
getContentResolver().registerContentObserver(uri, true,
new MyObserver(new Handler()));
}
private class MyObserver extends ContentObserver {
public MyObserver(Handler handler) { // handler 鏄涓涓娑堟伅澶勭悊鍣
super(handler);
}
@Override
public void onChange(boolean selfChange) {
// TODO Auto-generated method stub
System.out.println("haha,鏁版嵁搴撶殑鍐呭瑰彉鍖栦简锛侊紒锛");
super.onChange(selfChange);
}
}
}
骞朵慨鏀笔ersonDBProvider.java涓镄勪唬镰侊细
public Uri insert(Uri uri, ContentValues values) {
if (matcher.match(uri) == INSERT) {
// 杩斿洖镆ヨ㈢殑缁撴灉闆
SQLiteDatabase db = helper.getWritableDatabase();
db.insert("person", null, values);
getContext().getContentResolver().notifyChange(uri, null);
} else {
throw new IllegalArgumentException("璺寰勪笉鍖归厤锛屼笉鑳芥墽琛屾彃鍏ユ搷浣");
}
return null;
}
@Override
public int delete(Uri uri, String selection, String[] selectionArgs) {
if (matcher.match(uri) == DELETE) {
// 杩斿洖镆ヨ㈢殑缁撴灉闆
SQLiteDatabase db = helper.getWritableDatabase();
int result = db.delete("person", selection, selectionArgs);
db.close();
if (result > 0) {
getContext().getContentResolver().notifyChange(uri, null);
}
} else {
throw new IllegalArgumentException("璺寰勪笉鍖归厤锛屼笉鑳芥墽琛屽垹闄ゆ搷浣");
}
return 0;
}
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