Summary of various common functions of Intent. Action in Android development

2021-10-25 07:59:38
OfStack

This paper introduces various common functions of Intent in Android.

1 Intent.ACTION_MAIN

String: android.intent.action.MAIN

Identifies Activity as the start of 1 program. More commonly used.

Input:nothing

Output:nothing


<activity android:name=".Main" android:label="@string/app_name">  
<intent-filter>
     <action android:name="android.intent.action.MAIN" />
     <category android:name="android.intent.category.LAUNCHER" />
   </intent-filter>
</activity>

2 Intent.Action_CALL

Stirng: android.intent.action.CALL

Call the specified telephone number.

Input: Telephone number. The data format is: tel: + phone number

Output:Nothing


Intent intent=new Intent(); 
intent.setAction(Intent.ACTION_CALL);  
intent.setData(Uri.parse("tel:1320010001");
startActivity(intent);

When using Intent. ACTION_CALL, you must add in AndroidManifest. xml < uses-permission android:name="android.permission.CALL_PHONE" / > You have gained permission to make a call. Intent.ACTION_CALL is different from Intent.ACTION_DIALOG in that Intent.ACTION_DIALOG simply calls the dialing keypad to copy the phone number, while Intent.ACTION_CALL makes a direct call

3 Intent.Action.DIAL

String: action.intent.action.DIAL

Call the dialing panel


Intent intent=new Intent();
intent.setAction(Intent.ACTION_DIAL);  //android.intent.action.DIAL
intent.setData(Uri.parse("tel:1320010001");
startActivity(intent);

Input: Telephone number. The data format is: tel: + phone number

Output:Nothing

Description: Dial UI to open Android. If no data is set, an empty UI is opened, and if data is set, action. DIAL gets the phone number by calling getData ().

But set the data format for the phone number to tel: + phone number.

4 Intent.Action.ALL_APPS

String: andriod.intent.action.ALL_APPS

List all applications.

Input: Nothing.

Output:Nothing.

5 Intent.ACTION_ANSWER

Stirng:android.intent.action.ANSWER

Handle incoming calls.

Input:Nothing.

Output:Nothing.

6 Intent.ACTION_ATTACH_DATA

String: android.action.ATTCH_DATA

Don't use it to specify that 1 data should be attached to 1 other place, for example, picture data should be attached to contacts

Input: Data

Output:nothing

7 Intent.ACTION_BUG_REPORT

String: android.intent.action.BUG_REPORT

Displays the Dug report.

Input:nothing

output:nothing

8 Intent.Action_CALL_BUTTON

String: android.action.intent.CALL_BUTTON.

Equivalent to the user pressing the "dial" key. The test shows "call record"

Input:nothing

Output:nothing


Intent intent = new Intent(Intent.ACTION_CALL_BUTTON);
startActivity(intent);

9 Intent.ACTION_CHOOSER

String: android.intent.action.CHOOSER

Displays an activity selector that allows users to select what they want before the process, corresponding to Intent. ACTION_GET_CONTENT.

10. Intent.ACTION_GET_CONTENT

String: android.intent.action.GET_CONTENT

Allows the user to select a special kind of data and return (special kind of data: take a photo or record a sound)

Input: Type

Output:URI


int requestCode = 1001;
Intent intent = new Intent(Intent.ACTION_GET_CONTENT); // "android.intent.action.GET_CONTENT"
intent.setType("image/*"); //  View the type, and if it is another type, such as video, replace it with  video/* , or  */*
Intent wrapperIntent = Intent.createChooser(intent, null);
startActivityForResult(wrapperIntent, requestCode);

11 Intent.ACTION_VIEW

Stirng: android.intent.action.CALL0

Used to display user data.

It is more general, and the corresponding Activity will be opened according to the user's data type.

For example, tel: 13400010001 opens the dialing program, and http://www.g.cn opens the browser.


Uri uri = Uri.parse("http://www.google.com"); // Browser  
Uri uri =Uri.parse("tel:1232333"); // Dialing program  
Uri uri=Uri.parse("geo:39.899533,116.036476"); // Open map positioning  
Intent it = new Intent(Intent.ACTION_VIEW,uri); 
startActivity(it);


// Play video  
Intent intent = new Intent(Intent.ACTION_VIEW); 
Uri uri = Uri.parse("file:///sdcard/media.mp4"); 
intent.setDataAndType(uri, "video/*"); 
startActivity(intent);


// Call the program that sends short messages  
Intent it = new Intent(Intent.ACTION_VIEW);
it.putExtra("sms_body", " Information content ..."); 
it.setType("vnd.android-dir/mms-sms"); 
startActivity(it);

12 Intent.ACTION_SENDTO

String: android.intent.action.SENDTO

Description: Send SMS


// Send a short message  
Uri uri = Uri.parse("smsto:13200100001"); 
Intent it = new Intent(Intent.ACTION_SENDTO, uri); 
it.putExtra("sms_body", " Information content ..."); 
startActivity(it);


// Send MMS , The device will be prompted to select the appropriate program to send  
Uri uri = Uri.parse("content://media/external/images/media/23"); 
// Resources (images or other resources) in the device  
Intent intent = new Intent(Intent.ACTION_SEND); 
intent.putExtra("sms_body", " Content "); 
intent.putExtra(Intent.EXTRA_STREAM, uri); 
intent.setType("image/png"); 
startActivity(it);


Intent intent=new Intent(); 
intent.setAction(Intent.ACTION_CALL);  
intent.setData(Uri.parse("tel:1320010001");
startActivity(intent);

13 Intent.ACTION_GET_CONTENT


Intent intent=new Intent(); 
intent.setAction(Intent.ACTION_CALL);  
intent.setData(Uri.parse("tel:1320010001");
startActivity(intent);


Intent intent=new Intent(); 
intent.setAction(Intent.ACTION_CALL);  
intent.setData(Uri.parse("tel:1320010001");
startActivity(intent);


// Shoot a video  
int durationLimit = getVideoCaptureDurationLimit(); //SystemProperties.getInt("ro.media.enc.lprof.duration", 60);
Intent intent = new Intent(MediaStore.ACTION_VIDEO_CAPTURE);
intent.putExtra(MediaStore.EXTRA_VIDEO_QUALITY, 0);
intent.putExtra(MediaStore.EXTRA_SIZE_LIMIT, sizeLimit);
intent.putExtra(MediaStore.EXTRA_DURATION_LIMIT, durationLimit);
startActivityForResult(intent, REQUEST_CODE_TAKE_VIDEO);


Intent intent=new Intent(); 
intent.setAction(Intent.ACTION_CALL);  
intent.setData(Uri.parse("tel:1320010001");
startActivity(intent);


Intent intent=new Intent(); 
intent.setAction(Intent.ACTION_CALL);  
intent.setData(Uri.parse("tel:1320010001");
startActivity(intent);


Intent intent=new Intent(); 
intent.setAction(Intent.ACTION_CALL);  
intent.setData(Uri.parse("tel:1320010001");
startActivity(intent);

Over. ^ _ ^

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