android contentprovider - Failed to find provider info for -


in encoding process encountered 1 of following exceptions:

09-12 14:12:36.327 10764-10764/cn.com.luckytry.interview e/activitythread: failed find provider info cn.com.luckytry.interview.service 09-12 14:12:36.327 10764-10764/cn.com.luckytry.interview e/contentresolver: query() unstableprovider null

i registering , declaring permissions code in androidmanifest file androidmanifest follows:

 <application     android:name=".myapplication"     android:allowbackup="true"     android:icon="@mipmap/logo"     android:label="@string/app_name"     android:roundicon="@mipmap/ic_launcher_round"     android:supportsrtl="true"     android:theme="@style/apptheme">      <provider         android:name=".service.interviewpathprovider"         android:authorities="cn.com.luckytry.interview.service"         android:permission="cn.com.service.interviewpathprovider"         android:enabled="true"         android:exported="true"         android:process=":provider">      </provider>

...

</application>   <permission     android:name="cn.com.service.interviewpathprovider"     android:protectionlevel="normal" />

customize contentprovider:

    public class interviewpathprovider extends contentprovider {  public static final string authority = "cn.com.luckytry.interview.service"; public static final uri path_content_uri = uri.parse("content://"         + authority + "/path"); public static final int path_uri_code = 0; private static final urimatcher surimatcher = new urimatcher(         urimatcher.no_match);  static {     surimatcher.adduri(authority, "path", path_uri_code); } private context mcontext; private sqlitedatabase mdb;  @override public boolean oncreate() {     mcontext = getcontext();     mdb =new dbopenhelper(mcontext).getreadabledatabase();     return true; }  @nullable @override public cursor query(@nonnull uri uri, @nullable string[] projection, @nullable string selection, @nullable string[] selectionargs, @nullable string sortorder) {      string table = gettablename(uri);     if (table == null) {         throw new illegalargumentexception("unsupported uri: " + uri);     }     lutil.e("query");//日志没有输出     return mdb.query(table, projection, selection, selectionargs, null, null, sortorder, null); }

...

private string gettablename(uri uri) {     lutil.e("gettablename");     string tablename = null;     switch (surimatcher.match(uri)) {         case path_uri_code:             tablename = "interpath.db";             break;          default:break;     }      return tablename; }

}

services use:

    /**  * 解析查询结果  * @param id  * @return  */ private string getqueryresult(int id) {     uri useruri = interviewpathprovider.path_content_uri;

// cursor cursor = db.query("news", null, "commentcount>?", new string[]{"0"}, null, null, null); string result = null;

    cursor pathcursor = getcontentresolver().query(useruri, null, "beanid=?", new string[]{id+""}, null);     if(pathcursor!=null){         while (pathcursor.movetonext()) {             result = pathcursor.getstring(1);         }         pathcursor.close();     }      return  result; }


Comments

Post a Comment

Popular posts from this blog

angular - Ionic slides - dynamically add slides before and after -

hi i'm using ngfor create set of 3 slides while starting in middle i'm guaranteed able slide left or right on start. when slide right can simple listen reachedend , push slide array i'm looping. but have problem adding slide beginning. if same above , use e.g. array.unshift() or spread add item beginning, view think it's on position 0 , snaps view new slide. the code below work animates slide change index 1. slide = [0,1,2] //example loop slidechanged(event) { if(this.slides.isbeginning()){ this.slide = [this.slide[0]-1, ...this.slide]; this.slides.update(); this.slides.slideto(1) } } <ion-slides [initialslide]="1" (ionslidedidchange)="slidechanged($event)"> <ion-slide *ngfor="let item of slide"> <h1>slide {{item}}</h1> </ion-slide> </ion-slides> any appreciated! you can using ionslidenextend , ionslideprevend events slides . please
Read more

minify - Minimizing css files -

i want know how css files can minimized. currently, using external sites css minifier compress css files. however, after removing whitespaces, comments, etc, file sizes reduced 10-15%. how frameworks bootstrap manage make minimized versions kilobytes. as example, css is: body { background-color: #ff0; } the reduction goes 28 bytes 22 bytes other css files have lot more characters still smaller this. actually minifying code means it's remove thing code white space characters new line characters comments block delimiters it reduces amount of code has transferred on web , speed site load fastly.but unreadable format.
Read more

Add a dynamic header in angular 2 http provider -

i have http interceptor built via tutorial https://scotch.io/@kashyapmukkamala/using-http-interceptor-with-angular2 the problem need have dynamic header changes automatically once changes 'mode' in app. service able tell interceptor change header, or have interceptor pull header (which string)from service each request. able throwing away patch method, call http.patch('new header string') set header string. call in service controls 'mode' setting. wondering if there way interceptor pull recent value service each request or if can add method http provider via interceptor? i've tried call service in interceptor each request returns undefined. because creating new instance of service or copying value before service fired , loaded/changed data. i don't want pass header string every http provider call because defeats purpose of having interceptor, id able set once changes or have provider fetch service before makes request. tl;dr : need add autom
Read more