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This article mainly introduces Android how to achieve the function of cutting photos, the article introduces in great detail, has a certain reference value, interested friends must read it!

1. Select photos from albums for cropping

Select a photo from the album and crop:

/ * *

* Select photos from the album for cropping

, /

Private void cropFromGallery () {

/ / TODO Auto-generated method stub

Intent intent=new Intent ()

Intent.setAction (Intent.ACTION_PICK); / / Pick an item from the data

Intent.setType ("image/*"); / / Select from all pictures

Intent.putExtra ("crop", "true"); / / set to trim

Intent.putExtra ("aspectX", 1); / / the width ratio of the cut

Intent.putExtra ("aspectY", 1); / / High percentage of cutting

Intent.putExtra ("outputX", 600); / / cut width

Intent.putExtra ("outputY", 600); / / height of cutting

Intent.putExtra ("scale", true); / / support scaling

Intent.putExtra ("return-data", false)

Intent.putExtra (MediaStore.EXTRA_OUTPUT, imageUri); / / output the result of the trimming to the specified Uri

Intent.putExtra ("outputFormat", Bitmap.CompressFormat.JPEG.toString ()); / / format of the cut image

Intent.putExtra ("noFaceDetection", true); / / no face detection

StartActivityForResult (intent, SELECT_PIC)

}

Display the cut photos on ImagaView:

Case SELECT_PIC:

If (resultCode==RESULT_OK) {

Try {

Bitmap bitmap=BitmapFactory.decodeStream (getContentResolver ().

OpenInputStream (imageUri)); / / load pictures of imageUri objects into memory

ImgShow.setImageBitmap (bitmap)

} catch (FileNotFoundException e) {

/ / TODO Auto-generated catch block

E.printStackTrace ()

}

}

Break

Program running effect picture:

two。 Take a picture from the camera and crop it.

Control the camera to take pictures and save the photos to the specified location:

/ * *

* take photos from the camera for cropping

, /

Private void cropFromTake () {

/ / TODO Auto-generated method stub

Intent intent=new Intent ()

Intent.setAction (MediaStore.ACTION_IMAGE_CAPTURE); / / set Action to take photos

Intent.putExtra (MediaStore.EXTRA_OUTPUT, imageUri); / / Save the captured photos to the specified URI

StartActivityForResult (intent, TAKE_PIC)

}

Crop the arranged photos and display them on ImageView:

Case TAKE_PIC:

If (resultCode==RESULT_OK) {

CropImageUri (imageUri, 600,600, CROP_PIC)

}

Break

/ * *

* crop the photos corresponding to the specified uri

* @ param imageUri:uri corresponding photos

* @ param outputX: crop width

* @ param outputY: cut height

* @ param requestCode: request code

, /

Private void cropImageUri (Uri imageUri, int outputX, int outputY, int requestCode) {

Intent intent = new Intent ("com.android.camera.action.CROP")

Intent.setDataAndType (imageUri, "image/*")

Intent.putExtra ("crop", "true")

Intent.putExtra ("aspectX", 1)

Intent.putExtra ("aspectY", 1)

Intent.putExtra ("outputX", outputX)

Intent.putExtra ("outputY", outputY)

Intent.putExtra ("scale", true)

Intent.putExtra (MediaStore.EXTRA_OUTPUT, imageUri)

Intent.putExtra ("return-data", false)

Intent.putExtra ("outputFormat", Bitmap.CompressFormat.JPEG.toString ())

Intent.putExtra ("noFaceDetection", true); / / no face detection

StartActivityForResult (intent, requestCode)

}

Program running effect picture:

3. Complete project code:

Package com.jph.cp; import java.io.File;import java.io.FileNotFoundException;import android.support.v7.app.ActionBarActivity;import android.content.Intent;import android.graphics.Bitmap;import android.graphics.BitmapFactory;import android.net.Uri;import android.os.Bundle;import android.os.Environment;import android.provider.MediaStore;import android.view.View;import android.widget.ImageView / * Select photos from the album to crop, and take photos from the camera to crop * @ author JPH * Date:2014.10.09 * / public class MainActivity extends ActionBarActivity {private final static int SELECT_PIC=0x123; private final static int TAKE_PIC=0x124; private final static int CROP_PIC=0x125; private Uri imageUri; private ImageView imgShow; @ Override protected void onCreate (Bundle savedInstanceState) {super.onCreate (savedInstanceState) SetContentView (R.layout.activity_main); / / initialize imageUri imageUri=Uri.fromFile (new File (Environment.getExternalStorageDirectory (), "test.jpg"); imgShow= (ImageView) findViewById (R.id.imgShow) } @ Override protected void onActivityResult (int requestCode, int resultCode, Intent data) {/ / TODO Auto-generated method stub switch (requestCode) {case SELECT_PIC: if (resultCode==RESULT_OK) {try {Bitmap bitmap=BitmapFactory.decodeStream (getContentResolver (). OpenInputStream (imageUri)); / / load pictures of imageUri objects into memory imgShow.setImageBitmap (bitmap);} catch (FileNotFoundException e) {/ / TODO Auto-generated catch block e.printStackTrace ();}} break Case TAKE_PIC: if (resultCode==RESULT_OK) {cropImageUri (imageUri, 600,600, CROP_PIC);} break; case CROP_PIC: if (resultCode==RESULT_OK) {try {Bitmap bitmap=BitmapFactory.decodeStream (getContentResolver (). OpenInputStream (imageUri)); / / load pictures of imageUri objects into memory imgShow.setImageBitmap (bitmap);} catch (FileNotFoundException e) {/ / TODO Auto-generated catch block e.printStackTrace ();}} break; default: break } super.onActivityResult (requestCode, resultCode, data) } / * crop the photo corresponding to the specified uri * @ param imageUri:uri * @ param outputX: crop width * @ param outputY: crop height * @ param requestCode: request code * / private void cropImageUri (Uri imageUri, int outputX, int outputY, int requestCode) {Intent intent = new Intent ("com.android.camera.action.CROP") Intent.setDataAndType (imageUri, "image/*"); intent.putExtra ("crop", "true"); intent.putExtra ("aspectX", 1); intent.putExtra ("aspectY", 1); intent.putExtra ("outputX", outputX); intent.putExtra ("outputY", outputY); intent.putExtra ("scale", true); intent.putExtra (MediaStore.EXTRA_OUTPUT, imageUri) Intent.putExtra ("return-data", false); intent.putExtra ("outputFormat", Bitmap.CompressFormat.JPEG.toString ()); intent.putExtra ("noFaceDetection", true); / / no face detection startActivityForResult (intent, requestCode) } public void cropPic (View view) {switch (view.getId ()) {case R.id.btnCropFromGallery:// selects photos from the album to crop cropFromGallery (); break; case R.id.btnCropFromTake:// takes photos from the camera to crop cropFromTake (); break; default: break }} / * take photos from the camera for cropping * / private void cropFromTake () {/ / TODO Auto-generated method stub Intent intent=new Intent (); intent.setAction (MediaStore.ACTION_IMAGE_CAPTURE); / / set Action to intent.putExtra (MediaStore.EXTRA_OUTPUT, imageUri); / / Save the photos taken to the specified URI startActivityForResult (intent, TAKE_PIC) } / * Select photos from albums for cropping * / private void cropFromGallery () {/ / TODO Auto-generated method stub Intent intent=new Intent (); intent.setAction (Intent.ACTION_PICK); / / Pick an item from the data intent.setType ("image/*"); / / Select intent.putExtra ("crop", "true") from all images / / set to cut intent.putExtra ("aspectX", 1); / / cut wide scale intent.putExtra ("aspectY", 1); / / cut high proportion intent.putExtra ("outputX", 600); / / cut width intent.putExtra ("outputY", 600); / / cut height intent.putExtra ("scale", true) / support scaling intent.putExtra ("return-data", false); intent.putExtra (MediaStore.EXTRA_OUTPUT, imageUri); / / outputting the trimmed result to the specified Uri intent.putExtra ("outputFormat", Bitmap.CompressFormat.JPEG.toString ()); / / the format of the trimmed image intent.putExtra ("noFaceDetection", true); / / no face detection startActivityForResult (intent, SELECT_PIC) }} above is all the content of the article "how to achieve photo clipping in Android". Thank you for reading! Hope to share the content to help you, more related knowledge, welcome to follow the industry information channel!

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