<!-- @page { margin: 2cm } P { margin-bottom: 0.21cm } --> 在init.rc檔案裡,可以看到載入下面的服務: service dbus /system/bin/dbus-daemon --system --nofork socket dbus stream 660 bluetooth bluetooth user bluetooth group bluetooth
Android開發過程中,碰到R cannot be resolved to a variable的報錯資訊,好像沒有很確定的錯誤原因,一般來說,我總結出幾個可能的解決方案,希望試過以後管用。。。 1. 檢查Android 的SDK是否丟失需要重新下載,檢查build path2.確保class沒有import
預設的瀏覽器都列出讓使用者選擇的Java代碼Uri u = Uri.parse(url);Intent it = new Intent(Intent.ACTION_VIEW, url); TestActivity.this.startActivity(it); Uri u = Uri.parse(url);Intent it = new Intent(Intent.ACTION_VIEW, url);
Android在shell中提供了am命令來發送Intent,它的源碼為位於frameworks/base/cmds/am.它本身是用JAVA代碼來實現的。執行am命令其實是通過運行shell指令碼frameworks/base/cmds/am/am,然後在該指令碼中運行app_process命令來啟動am這個java程式的。frameworks/base/cmds/am/am指令檔如下:# Script to start "am" on the device, which
Content Providers是Android四大組件之一,扮演者非常重要的角色,看下官方文檔對它的解釋:Content providers manage access to a structured set of data. They encapsulate the data, and provide mechanisms for defining data security. Content providers are the standard interface that
andling affinities處理affinityThe affinity indicates which task an activity prefers to belong to.By default, all the activities from the same application have an affinity for each other.So, by default, all activities in the same application prefer to