android manifest activity

1. Under what circumstances:SDK version 20After creating a project, add a custom Activity and define it in manifest. xml.[Html]Android: icon = "@ drawable/ic_launcher"Android: label = "@ string/app_name"Android: theme = "@ style/AppTheme">

the stack and is destroyed. If the activity is destroyed, the system will not save its status. 4: The Activity can be instantiated many times, even from different tasks.Of course, you can change its default status by adding a flag to the manifest file or the intent in the startup Activity. Intent. setFlags (Intent. FL

The main references in this paper this article and Ningyugang, "Android Development art Exploration," a book, thanks to the two authors! the classic activity life cycle diagram(image from the network):7 Methods A simple descriptive narration are for example the following:1.onCreate:Activitycalled when it is created2, Onstart:activity is being started, has been visible, but not yet out of the front desk. You

Original:http://www.2cto.com/kf/201112/113331.html There are two sentences in the Do you know what is the meaning of the two words in the middle? Do you know the implementation process of the Android app?When the written app is posted to the phone, when you double-click the app's icon in the "drawer", the system will wrap the click time as a intent, which contains two parameters, the two parameters described above are passed to the app, and the intent

use this ID to set the layout of the activity interface. However, you can also create a new view in your activity code and construct a view tree by inserting the new view into the viewgroup, then, the window layout is implemented by passing the root viewgroup to the setcontentview () method. For more information about creating a user interface, see the user interface document. Declare

First, create a new activityThe four components of 1.android are configured in the manifest file2. If you want to have multiple launch icons for your app, your activity needs to be configured like this The Lable and Icon properties under 3.Activity can be different from the properties of the application node by defa

The example in this article describes the simple implementation of Android programming to set the activity background to wallpaper. Share to everyone for your reference, specific as follows: 1) Code mode Drawable wallpaper = Wallpapermanager.getinstance (this). Getdrawable (); This.getwindow (). setbackgrounddrawable (wallpaper); 2) XML configuration In the configuration of the

In the previous article, we analyzed the creation process of the running context of the Android application window. It follows that each activity component has an associated Contextimpl object, and it also has a window object associated with it that describes a specific application window. As a result, activity is nothing more than a highly abstract UI component,

Start an activity in Android if you click the Home button, the activity is not destroyed, but some data is lost when you do something, as follows: Java class: Package com.king.activitytest2; Import android.support.v7.app.AppCompatActivity; Import Android.os.Bundle; Import Android.view.View; Import Android.widget.Button; Import Android.widget.EditText; Impor

First, create the project File->new->android application fill in the application name, project name, package name in sequenceFind Src/com.example.helloworld Mainactivity.java under the engineering catalogue Second, add code Copy Code code as follows: Package Com.example.helloworld; Import android.app.Activity;Import android.content.Intent;Import Android.os.Bundle;Import Android.view.View;Import Android.view.View.OnClickListener;Impo

/ Progressbarstylesmall "style="? Android:attr/progressbarstylesmalltitle "Separator Landscape: Original: http://www.cnblogs.com/guxingzhe/p/4857336.html Method one: Through Theme.translucent[java] View plain copy@android:style/theme.translucent @android: style/ Theme.Translucent.NoTitleBar @android: Style/theme.translucent.notitlebar.fullscreen Only need to be in the

In this chapter, we will learn how to switch between activities. So many of the previous tutorials are operated in an Activity-View, so we may feel quite depressed. Go straight to the topic. In Android software development, an application is usually composed of multiple activities and views. How can these activities be switched? Android provides the Intent class

The example in this article describes how Android implements the stop service from activity. Share to everyone for your reference, specific as follows: 1. Registered service in Androidmanifest.xml 2. Call in activity Final Intent Intent = new Intent (); Intent.setaction ("Itop.") MOBILE. Simple. SERVICE. Sensorservice "); StopService (Intent);

The Quickcontactsdemo sample describes the contacts database that uses the content provider to access the Android system. Content provider provides a unified interface for sharing data between different applications, and the content provider implements the application code and data layer separation by abstracting the underlying data source. The Android platform provides a corresponding content provider int

The animation effect diagram is as follows:The transition effect of one of these activity (pictured above) is described below. The current two activity has a common UI element, which is appropriate for this animation effect, giving the user a consistent experience.Implementation steps1. Create a new Android application project with two

On the complete exit of the Android program, there are a lot of posts on the Internet, there are many ways. Remember at that time I wrote the first relatively complete project when the problem, because of the activity of the life cycle is not enough to understand, but also use the tabactivity to make the hierarchical relationship is more complex, added in the program "Exit" menu items often can not complete

stack. While the startup mode of the component will affect its record in the task stack, the Android project manifest profile Androidmanifest.xmlConfigure the Android:launchmode property within the 2. When activity is activated at the top of the stack, the new object's stack top unique mode singletop is not created. 3. When the

The previous article on the creation and activation of activity, this one, we talk about the activity of data transmissionData transfer between activity, the main introduction here is the transfer of simple data between activity, directly with the bundle to pass the basic data type data. Another data type is parcelable