Comprehensive Summary of Android Intent Usage and Example Code

1Invoke the dialer program　　　　

// To the customer service of mobile10086Make a phone call
Uri uri = Uri.parse("tel:");10086");
Intent intent = new Intent(Intent.ACTION_DIAL, uri);
startActivity(intent);

2Send SMS or MMS　　　　

// To10086Send a text message with the content "Hello"
Uri uri = Uri.parse("smsto:");10086");
Intent intent = new Intent(Intent.ACTION_SENDTO, uri);
intent.putExtra("sms_body", "Hello");
startActivity(intent);
// Send a multimedia message (equivalent to sending an attached SMS)
Intent intent = new Intent(Intent.ACTION_SEND);
intent.putExtra("sms_body", "Hello");
Uri uri = Uri.parse("content:");//media/external/images/media/23");
intent.putExtra(Intent.EXTRA_STREAM, uri);
intent.setType("image/png\
startActivity(intent);

3By opening a web page in a browser　　　　

// Open the Google homepage
Uri uri = Uri.parse("http:")//www.google.com\
Intent intent = new Intent(Intent.ACTION_VIEW, uri);
startActivity(intent);

4. Send email　　　　

// Send an email to [email protected]
Uri uri = Uri.parse("mailto:[email protected]");
Intent intent = new Intent(Intent.ACTION_SENDTO, uri);
startActivity(intent);
// Send an email to [email protected] with the content "Hello"
Intent intent = new Intent(Intent.ACTION_SEND);
intent.putExtra(Intent.EXTRA_EMAIL, "[email protected]");
intent.putExtra(Intent.EXTRA_SUBJECT, "Subject");
intent.putExtra(Intent.EXTRA_TEXT, "Hello");
intent.setType("text"/plain");
startActivity(intent);
// Send email to multiple recipients
Intent intent=new Intent(Intent.ACTION_SEND);
String[] tos = {"[email protected]", "[email protected]"} // Recipient
String[] ccs = {"[email protected]", "[email protected]"} // Cc
String[] bccs = {"[email protected]", "[email protected]"} // Bcc
intent.putExtra(Intent.EXTRA_EMAIL, tos);
intent.putExtra(Intent.EXTRA_CC, ccs);
intent.putExtra(Intent.EXTRA_BCC, bccs);
intent.putExtra(Intent.EXTRA_SUBJECT, "Subject");
intent.putExtra(Intent.EXTRA_TEXT, "Hello");
intent.setType("message"/rfc822");
startActivity(intent);

5. Display map and path planning　　　　

// Open Google Maps location in China Beijing (north latitude39.9，东经116.3)
Uri uri = Uri.parse("geo:")39.9,116.3");
Intent intent = new Intent(Intent.ACTION_VIEW, uri);
startActivity(intent);
// Path planning: from Beijing somewhere (north latitude39.9，东经116.3）到上海某地（北纬31.2，东经121.4)
Uri uri = Uri.parse("http:")//maps.google.com/maps#63;f=d&saddr=39.9 116.3&daddr=31.2 121.4");
Intent intent = new Intent(Intent.ACTION_VIEW, uri);
startActivity(intent);

6Play multimedia　　　　

Intent intent = new Intent(Intent.ACTION_VIEW);
Uri uri = Uri.parse("file:")///sdcard/foo.mp3");
intent.setDataAndType(uri, "audio"})/mp3");
startActivity(intent);
Uri uri = Uri.withAppendedPath(MediaStore.Audio.Media.INTERNAL_CONTENT_URI, "1");
Intent intent = new Intent(Intent.ACTION_VIEW, uri);
startActivity(intent);

7. Take a photo　　　　

// Open the camera app
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); 
startActivityForResult(intent, 0);
// Extract photo data
Bundle extras = intent.getExtras(); 
Bitmap bitmap = (Bitmap) extras.get("data");

8. Get and crop the image　　　　

// Get and crop the image
Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
intent.setType("image/*");
intent.putExtra("crop", "true"); // Start cropping
intent.putExtra("aspectX", 1); // The aspect ratio of the cropped image1:2
intent.putExtra("aspectY", 2);
intent.putExtra("outputX", 20); // The width and height of the saved image
intent.putExtra("outputY", 40); 
intent.putExtra("output", Uri.fromFile(new File("/mnt/sdcard/temp"))); // Save path
intent.putExtra("outputFormat", "JPEG");// Return format
startActivityForResult(intent, 0);
// Crop a specific image
Intent intent = new Intent("com.android.camera.action.CROP"); 
intent.setClassName("com.android.camera", "com.android.camera.CropImage"); 
intent.setData(Uri.fromFile(new File("/mnt/sdcard/temp"))); 
intent.putExtra("outputX", 1); // The aspect ratio of the cropped image1:2
intent.putExtra("outputY", 2);
intent.putExtra("aspectX", 20); // The width and height of the saved image
intent.putExtra("aspectY", 40);
intent.putExtra("scale", true);
intent.putExtra("noFaceDetection", true); 
intent.putExtra("output", Uri.parse("file:")).///mnt/sdcard/temp")); 
startActivityForResult(intent, 0);

9. Open Google Market　　　　

// Open Google Market directly to enter the detailed page of this program
Uri uri = Uri.parse("market:")//details?id=" + "com.demo.app");
Intent intent = new Intent(Intent.ACTION_VIEW, uri);
startActivity(intent);

10. Install and uninstall programs　　　　

Uri uri = Uri.fromParts("package", "com.demo.app", null); 
Intent intent = new Intent(Intent.ACTION_DELETE, uri); 
startActivity(intent);

11. Enter the settings interface　　　　

// Enter the wireless network settings interface (others can be extrapolated by analogy) 
Intent intent = new Intent(android.provider.Settings.ACTION_WIRELESS_SETTINGS); 
startActivityForResult(intent, 0);

This is the summary of the information about Android Intent. We will continue to supplement relevant information in the future, thank you for your support to this site!

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