{"id":17927,"date":"2024-03-05T15:08:12","date_gmt":"2024-03-05T07:08:12","guid":{"rendered":"https:\/\/www.zhidianwl.net\/zhidianwl\/?p=17927"},"modified":"2024-03-05T15:08:12","modified_gmt":"2024-03-05T07:08:12","slug":"app-%e5%bc%80%e5%8f%91-%e6%9c%ac%e5%9c%b0%e6%95%b0%e6%8d%ae%e5%ba%93%e8%83%bd%e5%8a%9b%e5%a6%82%e4%bd%95%e5%ae%9e%e7%8e%b0%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.zhidianwl.net\/zhidianwl\/2024\/03\/05\/app-%e5%bc%80%e5%8f%91-%e6%9c%ac%e5%9c%b0%e6%95%b0%e6%8d%ae%e5%ba%93%e8%83%bd%e5%8a%9b%e5%a6%82%e4%bd%95%e5%ae%9e%e7%8e%b0%ef%bc%9f\/","title":{"rendered":"app \u5f00\u53d1 \u672c\u5730\u6570\u636e\u5e93\u80fd\u529b\u5982\u4f55\u5b9e\u73b0\uff1f"},"content":{"rendered":"

\u5728\u79fb\u52a8\u5e94\u7528\u5f00\u53d1\u4e2d\uff0c\u7531\u4e8e\u9700\u8981\u5904\u7406\u5927\u91cf\u7684\u6570\u636e\uff0c\u56e0\u6b64\u4f7f\u7528\u672c\u5730\u6570\u636e\u5e93\u6765\u5b58\u50a8\u6570\u636e\u662f\u975e\u5e38\u5e38\u89c1\u7684\u3002\u672c\u5730\u6570\u636e\u5e93\u4e0e\u8fdc\u7a0b\u6570\u636e\u5e93\u4e0d\u540c\uff0c\u5b83\u662f\u5b58\u50a8\u5728\u8bbe\u5907\u672c\u5730\u7684\u4e00\u79cd\u6570\u636e\u5b58\u50a8\u65b9\u5f0f\u3002\u672c\u5730\u6570\u636e\u5e93\u6709\u5f88\u591a\u79cd\uff0c\u5176\u4e2d SQLite \u662f\u4e00\u79cd\u975e\u5e38\u53d7\u6b22\u8fce\u7684\u672c\u5730\u6570\u636e\u5e93\uff0c\u5b83\u662f\u4e00\u79cd\u8f7b\u91cf\u7ea7\u7684\u6570\u636e\u5e93\uff0c\u652f\u6301\u8de8\u5e73\u53f0\u64cd\u4f5c\uff0c\u53ef\u4ee5\u5728 iOS\u3001Android \u548c Windows \u4e0a\u8fd0\u884c\u3002<\/p>\n

\u4e00\u3001SQLite \u6570\u636e\u5e93\u7684\u4f7f\u7528\u65b9\u6cd5<\/p>\n

1. \u5f15\u5165 SQLite \u5e93<\/p>\n

\u5728\u5e94\u7528\u7a0b\u5e8f\u7684 build.gradle \u6587\u4ef6\u4e2d\u52a0\u5165\u4ee5\u4e0b\u4ee3\u7801\uff1a<\/p>\n

“`<\/p>\n

dependencies {<\/p>\n

compile ‘com.facebook.steAPP<\/a>tho:stetho:1.5.0′<\/p>\n

compile ‘com.facebook.stetho:stetho-okhttp3:1.5.0’<\/p>\n

compile ‘com.squareup.okhttp3:okhttp:3.5.0’<\/p>\n

compile ‘com.squareup.okhttp3:logging-interceptor:3.5.0’<\/p>\n

compile ‘com.facebook.stetho:stetho-js-rhino:1.5.0’<\/p>\n

compile ‘com.facebook.stetho:stetho-js:1.5.0’<\/p>\n

compile ‘com.facebook.stetho:stetho-common:1.5.0’<\/p>\n

compile ‘com.squareup.retrofit2:retrofit:2.3.0’<\/p>\n

compile ‘com.squareup.retrofit2:converter-gson:2.3.0’<\/p>\n

compile ‘net.zetetic:android-database-sqlcipher:3.5.9@aar’<\/p>\n

}<\/p>\n

“`<\/p>\n

2. \u521b\u5efa\u6570\u636e\u5e93<\/p>\n

\u9996\u5148\u8981\u521b\u5efa DBhelper \u7c7b\uff0cDBhelper \u7ee7\u627f\u81ea SQLiteOpenHelper\uff1a<\/p>\n

“`<\/p>\n

public class DBhelper extends SQLiteOpenHelper {<\/p>\n

public DBhelper(Context context, String name, CursorFactory factory, int version) {<\/p>\n

super(context, name, factory, version);<\/p>\n

}<\/p>\n

@Override<\/p>\n

public void onCreate(SQLiteDatabase db) {<\/p>\n

db.execSQL(“create table if not exists user(id integer primary key autoincrement,name varchar(10),age varchar(10))”);<\/p>\n

}<\/p>\n

@Override<\/p>\n

public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {<\/p>\n

\/\/\u5347\u7ea7\u6570\u636e\u5e93<\/p>\n

}<\/p>\n

}<\/p>\n

“`<\/p>\n

\u521b\u5efa\u597d DBhelper \u540e\uff0c\u5728 Activity \u4e2d\u521b\u5efa\u4e00\u4e2a DBhelper \u7684\u5b9e\u4f8b\uff1a<\/p>\n

“`<\/p>\n

mDbhelper = new DBhelper(this, “test.db”, null, 1);<\/p>\n

“`<\/p>\n

3. \u6570\u636e\u5e93\u63d2\u5165\u6570APP\u5f00\u53d1<\/a>\u636e<\/p>\n

\u63d2\u5165\u6570\u636e\u53ef\u4ee5\u901a\u8fc7 ContentValues \u7684\u65b9\u5f0f\u5b9e\u73b0\uff1a<\/p>\n

“`<\/p>\n

ContentValues values = new ContentValues();<\/p>\n

values.put(“name”, “Java”);<\/p>\n

values.put(“age”, “10”);<\/p>\n

mDbhelper.getWritableDatabase().insert(“user”, null, values);<\/p>\n

“`<\/p>\n

\u6216\u8005\u901a\u8fc7 SQL \u8bed\u53e5\u7684\u65b9\u5f0f\u5b9e\u73b0\uff1a<\/p>\n

“`<\/p>\n

mDbhelper.getWritableDatabase().execSQL(“insert into user(name,age) values(‘Java’,10)”);<\/p>\n

“`<\/p>\n

4. \u6570\u636e\u5e93\u67e5\u8be2\u6570\u636e<\/p>\n

\u67e5\u8be2\u6570\u636e\u53ef\u4ee5\u901a\u8fc7 Cursor \u5bf9\u8c61\u5b9e\u73b0\uff1a<\/p>\n

“`<\/p>\n

String sql = “select * from user”;<\/p>\n

Cursor cursor = mDbhelper.getWritableDatabase().rawQuery(sql, null);<\/p>\n

while (cursor.moveToNext()) {<\/p>\n

int id = cursor.getInt(cursor.getColumnIndex(“id”));<\/p>\n

String name = cursor.getString(cursor.getColumnIndex(“name”));<\/p>\n

String age = cursor.getString(cursor.getColumnIndex(“age”));<\/p>\n

Log.i(TAG, “id=” + id + “,name=” + name + “,age=” + age);<\/p>\n

}<\/p>\n

cursor.close();<\/p>\n

“`<\/p>\n

5. \u6570\u636e\u5e93\u66f4\u65b0\u6570\u636e<\/p>\n

\u66f4\u65b0\u6570\u636e\u53ef\u4ee5\u901a\u8fc7 ContentValues \u7684\u65b9\u5f0f\u5b9e\u73b0\uff1a<\/p>\n

“`<\/p>\n

ContentValues values = new ContentValues();<\/p>\n

values.put(“age”, 20);<\/p>\n

mDbhelper.getWritableDatabase().update(“user”, values, “name=?”, new String[]{“Java”});<\/p>\n

“`<\/p>\n

\u6216\u8005\u901a\u8fc7 SQL \u8bed\u53e5\u7684\u65b9\u5f0f\u5b9e\u73b0\uff1a<\/p>\n

“`<\/p>\n

String sql=”update user set age=20 where name=’Java'”;<\/p>\n

mDbhelper.getWritableDatabase().execSQL(sql);<\/p>\n

“`<\/p>\n

6. \u6570\u636e\u5e93\u5220\u9664\u6570\u636e<\/p>\n

\u5220\u9664\u6570\u636e\u53ef\u4ee5\u901a\u8fc7 SQL \u8bed\u53e5\u7684\u65b9\u5f0f\u5b9e\u73b0\uff1a<\/p>\n

“`<\/p>\n

St<\/p>\n

<\/figure>\n<\/p>\n

ring sql=”delete from user where name=’Java'”;<\/p>\n

mDbhelper.getWritableDatabase().execSQL(sql);<\/p>\n

“`<\/p>\n

\u4e8c\u3001SQLite \u6570\u636e\u5e93\u7684\u539f\u7406<\/p>\n

SQLite \u662f\u4e00\u4e2a\u8f7b\u91cf\u7ea7\u7684\u6570\u636e\u5e93\uff0c\u8ddf\u5176\u4ed6\u7684\u6570\u636e\u5e93\u76f8\u6bd4\uff0c\u5b83\u7684\u8bbe\u8ba1\u4f53\u7cfb\u66f4\u52a0\u7d27\u51d1\u3002\u5b83\u7684\u6570\u636e\u5e93\u5f15\u64ce\u662f\u4ee5 C \u8bed\u8a00\u5b9e\u73b0\u7684\uff0c\u6574\u4e2a\u6570\u636e\u5e93\u53ef\u4ee5\u5b58\u50a8\u5728\u4e00\u4e2a\u6587\u4ef6\u91cc\u9762\uff0c\u4e0d\u9700\u8981\u4e00\u4e2a\u989d\u5916\u7684\u670d\u52a1\u5668\u7a0b\u5e8f\u6765\u534f\u52a9\u5b58\u50a8\u7ba1\u7406\u3002SQLite \u7684\u8bbe\u8ba1\u76ee\u6807\u662f\u4f7f\u5f97\u79fb\u52a8\u8bbe\u5907\u548c\u5d4c\u5165\u5f0f\u8bbe\u5907\u80fd\u591f\u9ad8\u6548\u5730\u5b58\u50a8\u6570\u636e\u548c\u67e5\u8be2\u6570\u636e\uff0c\u56e0\u6b64\uff0cSQLite \u7684\u4e3b\u8981\u5e94\u7528\u573a\u666f\u662f\u79fb\u52a8\u5e94\u7528\u548c\u5d4c\u5165\u5f0f\u8bbe\u5907\u3002<\/p>\n

SQLite \u6570\u636e\u5e93\u7684\u6587\u4ef6\u7ed3\u6784\u975e\u5e38\u7b80\u6d01\uff0c\u5305\u542b 5 \u79cd\u6587\u4ef6\u7ed3\u6784\uff1a<\/p>\n

1. \u6587\u4ef6\u5934<\/p>\n

2. \u6570\u636e\u5e93\u9875<\/p>\n

3. \u6570\u636e\u9875<\/p>\n

4. \u7d22\u5f15\u9875<\/p>\n

5. \u8ddf\u8e2a\u9875<\/p>\n

SQLite \u7684\u67e5\u8be2\u8bed\u8a00\u91c7\u7528\u7684\u662f SQL92 \u6807\u51c6\uff0c\u4f46\u662f SQLite \u652f\u6301\u7684 SQL \u8bed\u6cd5\u7684\u4e00\u90e8\u5206\u662f\u662f\u4e0e SQL92 \u4e0d\u517c\u5bb9\u7684\u3002SQLite \u5177\u6709\u6b63\u786e\u7684\u3001\u65e0\u9501\u7684\u5e76\u53d1\u64cd\u4f5c\uff0c\u80fd\u591f\u786e\u4fdd\u591a\u4e2a\u8fdb\u7a0b\u548c\u7ebf\u7a0b\u540c\u65f6\u8bbf\u95ee\u6570\u636e\u5e93\u800c\u4e0d\u51fa\u73b0\u6570\u636e\u635f\u574f\u7684\u60c5\u51b5\u3002<\/p>\n

\u5728 SQLite \u6570\u636e\u5e93\u4e2d\uff0c\u8868\u8fbe\u6570\u636e\u6a21\u578b\u7684\u662f\u67e5\u8be2\u8ba1\u5212\uff0c\u67e5\u8be2\u8ba1\u5212\u662f\u4e00\u9897\u67e5\u8be2\u6811\uff0c\u5b83\u8868\u793a\u4e86\u67e5\u8be2\u8fc7\u7a0b\u4e2d\u6240\u9700\u7684\u6570\u636e\u6d41\u3002\u6bcf\u4e2a\u8282\u70b9\u90fd\u6709\u4e00\u4e2a\u8f93\u5165\u548c\u4e00\u4e2a\u8f93\u51fa\uff0c\u8f93\u5165\u6570\u636e\u4f1a\u5904\u7406\u4ea7\u751f\u8f93\u51fa, \u6700\u7ec8\u7684\u8282\u70b9\u4f1a\u628a\u6240\u9700\u7684\u6570\u636e\u8f93\u5165\u5230\u67e5\u8be2\u7ed3\u679c\u91cc\u9762\u3002<\/p>\n

\u603b\u7ed3<\/p>\n

\u672c\u6587\u4ecb\u7ecd\u4e86\u4f7f\u7528 SQLite \u6570\u636e\u5e93\u7684\u65b9\u6cd5\u548c SQLite \u6570\u636e\u5e93\u7684\u539f\u7406\uff0cSQLite \u4f5c\u4e3a\u4e00\u4e2a\u8f7b\u91cf\u7ea7\u7684\u6570\u636e\u5e93\uff0c\u975e\u5e38\u9002\u5408\u5728\u79fb\u52a8\u5e94\u7528\u548c\u5d4c\u5165\u5f0f\u8bbe\u5907\u4e2d\u4f7f\u7528\u3002\u4f7f\u7528 SQLite \u6570\u636e\u5e93\u53ef\u4ee5\u975e\u5e38\u65b9\u4fbf\u5730\u5b58\u50a8\u5904\u7406\u6570\u636e\uff0c\u5e76\u4e14\u4fdd\u8bc1\u4e86\u6570\u636e\u7684\u7a33\u5b9a\u6027\u548c\u5b89\u5168\u6027\u3002\u76f8\u4fe1\u901a\u8fc7\u672c\u6587\u7684\u4ecb\u7ecd\uff0c\u8bfb\u8005\u5bf9 SQLite \u6570\u636e\u5e93\u7684\u4f7f\u7528\u548c\u539f\u7406\u6709\u4e86\u66f4\u6df1\u5165\u7684\u4e86\u89e3\uff0c\u53ef\u4ee5\u66f4\u52a0\u719f\u7ec3\u5730\u5728\u5f00\u53d1\u4e2d\u4f7f\u7528\u8fd9\u4e2a\u5de5\u5177\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

\u5728\u79fb\u52a8\u5e94\u7528\u5f00\u53d1\u4e2d\uff0c\u7531\u4e8e\u9700\u8981\u5904\u7406\u5927\u91cf\u7684\u6570\u636e\uff0c\u56e0\u6b64\u4f7f\u7528\u672c\u5730\u6570\u636e\u5e93\u6765\u5b58\u50a8\u6570\u636e\u662f\u975e\u5e38\u5e38\u89c1\u7684\u3002\u672c\u5730\u6570\u636e\u5e93\u4e0e\u8fdc\u7a0b\u6570\u636e\u5e93\u4e0d\u540c\uff0c\u5b83\u662f\u5b58\u50a8\u5728\u8bbe\u5907\u672c\u5730\u7684\u4e00\u79cd\u6570\u636e\u5b58\u50a8\u65b9\u5f0f\u3002\u672c\u5730\u6570\u636e\u5e93\u6709\u5f88\u591a\u79cd\uff0c\u5176\u4e2d SQLite \u662f\u4e00\u79cd\u975e<\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[163,271,672,20624,19779],"topic":[],"class_list":["post-17927","post","type-post","status-publish","format-standard","hentry","category-kaifaapp","tag-163","tag-271","tag-672","tag-app","tag-19779"],"_links":{"self":[{"href":"https:\/\/www.zhidianwl.net\/zhidianwl\/wp-json\/wp\/v2\/posts\/17927","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.zhidianwl.net\/zhidianwl\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.zhidianwl.net\/zhidianwl\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.zhidianwl.net\/zhidianwl\/wp-json\/wp\/v2\/users\/9"}],"replies":[{"embeddable":true,"href":"https:\/\/www.zhidianwl.net\/zhidianwl\/wp-json\/wp\/v2\/comments?post=17927"}],"version-history":[{"count":1,"href":"https:\/\/www.zhidianwl.net\/zhidianwl\/wp-json\/wp\/v2\/posts\/17927\/revisions"}],"predecessor-version":[{"id":18060,"href":"https:\/\/www.zhidianwl.net\/zhidianwl\/wp-json\/wp\/v2\/posts\/17927\/revisions\/18060"}],"wp:attachment":[{"href":"https:\/\/www.zhidianwl.net\/zhidianwl\/wp-json\/wp\/v2\/media?parent=17927"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.zhidianwl.net\/zhidianwl\/wp-json\/wp\/v2\/categories?post=17927"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.zhidianwl.net\/zhidianwl\/wp-json\/wp\/v2\/tags?post=17927"},{"taxonomy":"topic","embeddable":true,"href":"https:\/\/www.zhidianwl.net\/zhidianwl\/wp-json\/wp\/v2\/topic?post=17927"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}