This article summarizes the common intent action functions of Android. Share it for your reference, as follows:
The basic design philosophy of Android is to encourage the reduction of coupling between components, so Android provides Intent (intention), Intent provides a universal messaging system that allows passing Intent between your application and other applications to perform actions and generate events. As a link between activities, Intent is not limited to simple data transmission. Through its own attributes, many more complex operations can be easily completed. For example, directly calling the dialing function, processing and receiving SMS, etc., can be done by setting the Intent attribute.
Intent has the following four important attributes, which are:
Action: The value of the Action property is a string, which represents a series of commonly used actions that have been defined in the system. Set it through the setAction() method or in the manifest file. The sample code (configured) that identifies the Activity as the beginning of a program is as follows:
<span style="font-size:16px;"> <intent-filter> <action android:name="" /> <category android:name="" /> </intent-filter> </span>
Data: Data is usually the operation data defined in the URI format. For example: tel://. Set by setData() method.
Category: The Category property is used to specify the environment in which the current action is executed. Set it through the addCategory() method or in the manifest file. The default is: CATEGORY_DEFAULT.
Extras: The Extras attribute is mainly used to pass the additional data required by the target component. Set by putExtras() method.
In this article, we mainly introduce the use of common actions. Action describes the string of the action name triggered by Intent. For BroadcastIntent, Action refers to the action that is broadcast. In theory, Action can be considered any string, and Action strings related to Android system applications are defined in the Intent class as static string constants. Actions include many types, such as incoming calls, outgoing calls, receiving text messages from teachers in class, etc. The following is a compilation of common system-related actions:
1. Intent.ACTION_MAIN
String:
Identifies the Activity as the beginning of a program.
2. Intent.Action_CALL
Stirng:
Call the specified phone number.
Intent intent=new Intent();
(Intent.ACTION_CALL);
(("tel:10086");
startActivity(intent);
3. Intent.ACTION_POWER_CONNECTED;
Broadcasts when plugged in with external power supply
4 Intent.ACTION_POWER_DISCONNECTED;
Broadcasts sent when external power connection has been disconnected
String:
Calling the dial panel
Intent intent=new Intent();
(Intent.ACTION_DIAL);
(("tel:10086");
startActivity(intent);
.ALL_APPS
String: .ALL_APPS
List all applications.
.ACTION_ANSWER
Stirng:
Process incoming calls.
8 .Intent.ACTION_BUG_REPORT
String: .BUG_REPORT
Show Dug report.
9. Intent.Action_CALL_BUTTON
String: .CALL_BUTTON.
It is equivalent to pressing the "Dial" key.
Intent intent = new Intent(Intent.ACTION_CALL_BUTTON); startActivity(intent);
10. Telephony.SMS_RECEIVED
String: .SMS_RECEIVED
Receive SMS action
<intent-filter> <action android:name=".SMS_RECEIVED"/> <data android:host="localhost"/> </intent-filter>
11. Intent.ACTION_GET_CONTENT
String: .GET_CONTENT
Allow users to select special types of data and return (special types of data: take a photo or record a sound)
12. Intent.ACTION_BATTERY_LOW;
String: .BATTERY_LOW
Indicates low battery power
13. Intent.ACTION_SEND
String:
The action of sending emails
14. Intent.ACTION_CALL_PRIVILEGED
String：.CALL_PRIVILEGED
Calling skype action
Intent intent = newIntent(".CALL_PRIVILEGED");
("",
"");
(("tel:" + phone));
startActivity(intent);
15. Intent.ACTION_CLOSE_SYSTEM_DIALOGS
When the screen timed out, when the user presses the power button, presses or presses for a long time (regardless of whether the dialog box is popped up), the Android system will broadcast this Action message when the screen is locked.
The above is a summary of common actions. There are actually many actions. If you want to use the ones not listed above, google.
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I hope this article will be helpful to everyone's Android programming design.