Android Phone defender 8--delete Call history

<span id="Label3"></p><p><p><strong><span style="line-height: 1.5">1. Write code that requires attention to bugs:</span></strong></p></p><p><p>Delete the call log, Delete the previous call history, the interception of the phone number, the call record is not deleted??????<br>Cause: the phone number of this call record in the database has not been inserted, did delete operation</p></p><p><p><strong>2.bug workaround:</strong></p></p><p><p>Content Provider: provides access to the database for external users<br>Content parser: access the database using the access method provided by the content provider (add-and-scan)<br>Content Watcher: Observe the changes in the database, and call the corresponding method once the data has changed</p></p><p><p>Through the content viewer, observe the insertion of the database, once inserted, do delete this insert data operation</p></p><pre class="brush:java;gutter:true;"><pre class="brush:java;gutter:true;">public void Endcall (String phone) {...//6, on the content parser, goes to register the content observer, through the content viewer, to observe the changes in the database (uri determines the library of that table) mcontentobserver = new Mycontentobserver (new Handler (), phone), getcontentresolver (). registercontentobserver (uri.parse ("content://call_ Log/calls "), true, mcontentobserver);}}</pre></pre><p><p></p></p><pre class="brush:java;gutter:true;"><pre class="brush:java;gutter:true;">Class Mycontentobserver extends Contentobserver{private String phone;public mycontentobserver (Handler handler,string Phone) {super (handler); this.phone = phone;} When the specified calls table in the database changes, the method is called @overridepublic void OnChange (boolean Selfchange) {//inserts a data, and then deletes Getcontentresolver (). Delete (uri.parse ("content://call_log/calls"), "number =?", new string[]{phone}); super.onchange (selfchange);}}</pre></pre><p><p>　　</p></p><p><p>　　</p></p><p><p>Android Phone defender 8--delete Call history</p></p></span>