Android如何实现裁剪照片功能

这篇文章主要介绍Android如何实现裁剪照片功能，文中介绍的非常详细，具有一定的参考价值，感兴趣的小伙伴们一定要看完！

  从相册选择照片进行裁剪
从相册选择照片并裁剪：

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
private void cropFromTake() {
    // TODO Auto-generated method stub
    Intent intent=new Intent();
    intent.setAction(MediaStore.ACTION_IMAGE_CAPTURE);//设置Action为拍照
    intent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);//将拍取的照片保存到指定URI
    startActivityForResult(intent, TAKE_PIC);
}

裁剪已经排好的照片并显示在ImageView上：

case TAKE_PIC:
    if (resultCode==RESULT_OK) {
        cropImageUri(imageUri, 600, 600, CROP_PIC);
    }
    break;

private void cropImageUri(Uri imageUri, int outputX, int outputY, int requestCode){
    Intent intent = new Intent("com.android.camera.action.CROP");
    intent.setDataAndType(imageUri, "imagepublic 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);        //初始化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));//将imageUri对象的图片加载到内存                    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));//将imageUri对象的图片加载到内存                    imgShow.setImageBitmap(bitmap);                } catch (FileNotFoundException e) {                    // TODO Auto-generated catch block                    e.printStackTrace();                }            }            break;        default:            break;        }        super.onActivityResult(requestCode, resultCode, data);    }        private void cropImageUri(Uri imageUri, int outputX, int outputY, int requestCode){        Intent intent = new Intent("com.android.camera.action.CROP");        intent.setDataAndType(imageUri, "image    private void cropFromTake() {        // TODO Auto-generated method stub        Intent intent=new Intent();        intent.setAction(MediaStore.ACTION_IMAGE_CAPTURE);//设置Action为拍照        intent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);//将拍取的照片保存到指定URI        startActivityForResult(intent, TAKE_PIC);    }        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/*");//从所有图片中进行选择        intent.putExtra("crop", "true");//设置为裁切        intent.putExtra("aspectX", 1);//裁切的宽比例        intent.putExtra("aspectY", 1);//裁切的高比例        intent.putExtra("outputX", 600);//裁切的宽度        intent.putExtra("outputY", 600);//裁切的高度        intent.putExtra("scale", true);//支持缩放        intent.putExtra("return-data", false);        intent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);//将裁切的结果输出到指定的Uri        intent.putExtra("outputFORMat", Bitmap.CompressFormat.JPEG.toString());//裁切成的图片的格式        intent.putExtra("noFaceDetection", true); // no face detection        startActivityForResult(intent, SELECT_PIC);        }}

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