Android

Generally, Android has its own input method. If we want to remove the original input method and use our favorite input method, we can find the original APK related to the input method after obtaining the root permission, use ADB debugging tool, ADB

Theme of Android is generally defined in activity, Built-in theme: Android: theme = "@ Android: style/theme. Dialog" Refer Http://androidappdocs.appspot.com/reference/android/R.style.html Common system themes: Theme_dialog:Diaglog is commonly

In 2.2, you can set the screen direction to reverse the horizontal screen: setrequestedorientation (8); because the system does not publish the setting of this parameter, but the screen_orientation_reverse_landscape parameter has been defined in the

Activity is responsible for displaying the user interface, but it also has a lot of knowledge to start an activity. It contains several parameters, such as action, flag, and category, action is used to implicitly start the activity, for example,

Each item in listview has a split line. Setting Android: footerdividersenabled indicates whether to display the split line. The default value is true. 1. If the split line is not displayed, you only need to add it to the listview control.Android:

  Recently, Android 2.3.5 (CM-basedCodeThe front camera records the problems encountered and solutions for review. 1: Why can't upper-layer applications obtain information about the front camera? Messages from the front camera are generally

Those who have used SQLite databases should be familiar with cursor. If you are engaged in. NET development, you can understand cursor as a data set in ado.net. Today, I will talk about it separately to deepen my understanding of Using cursor in

We all knowThe default expandablelistview group header of Android cannot be fixed on the interface. When scrolling down, it cannot indicate the group to which the currently displayed child belongs,I searched the internet for a lot of

How can I test the performance of Android applications? Traceview can be used at the Java level, but so is developed with ndk. What if traceview cannot be tracked? Asked the Google guru, the answer is oprofile! Oprofile is the next low-cost global

1. Install ubuntu12.0.4 on a 20 GB hard drive 2. Load the GB hard disk and format it. Create the androidx86 directory. Mount a GB hard disk to the androidx86 directory. Sudo passwd Root Su Root 3. CD androidx86 4. mkdir Bin 5. Download Repo * *****

I saw this doc when analyzing the INIT program source code of the Android system. I think the system analysis is quite useful, so I translated it!   Android initialization language (init. *. RC, init. conf file format) The android initialization

Generally, to improve the user experience, after the LCD Initialization is completed in the system startup phase, the first screen is displayed quickly to avoid the black screen taking too long and causing the user to think that the system is

Color the content in double quotation marks: Private void highlightsearchhint (spannable hintspan ){String hint = hintspan. tostring ();Log. I (TAG, "highlightsearchhint" + hint );Int Index =-1;Int start = 0;Boolean foundstartquote = false; Do

Android service Introduction 1. What is service?2. How to Use Service3.ServiceLifecycle 1. What isService ServiceThe name is similar to the "service" that we normally understand. It runs in the background and can interact with each other. It is

Listview is powerful and has many usage methods. Here is a simple usage method. First, let's take a look: The function of this list is to select an item and display it. Other functions are the same as those of listview. To achieve the above effect,

    Step 1: Add the following two pieces of code to androidmanifest. xml:   1. indicates introducing some dependent libraries in the unit test framework. 2. indicates the Startup Device for configuring the unit test framework. There

There are various events in the android activity, which are eventually converted to messages for processing. The message system in Android involves:* Message sending* Message Queue* Message loop* Message distribution* Message readingImportant

Sometimes, in projects, we need to process images, such as adding a rounded corner or adding a mosaic or watermark. Although it is not difficult, it is still quite tangled, for example, I have summarized the following image processing factory tool

Comparison between asynctask and handler 1) asynctask implementation principle, and applicable advantages and disadvantages Asynctask is a lightweight asynchronous class provided by Android. It can inherit asynctask directly and implement

In the Android system, when we click the menu button, the menu option of menu will pop up, one of which is the setting option, after clicking the setting option, the system setting activity interface is displayed. How are these settings implemented?