Android调用系统, 任意比例裁剪图片

废话不多说,直接上代码
核心代码:

/** * 跳转到系统裁剪图片页面 * @param imagePath 需要裁剪的图片路径 */private void cropPic(String imagePath) {    File file = new File(imagePath);     Intent intent = new Intent("com.android.camera.action.CROP");     if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {         intent.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);         Uri contentUri = FileProvider.getUriForFile(this, "com.leon.crop.fileprovider", file);         intent.setDataAndType(contentUri, "image/*");     } else {         intent.setDataAndType(Uri.fromFile(file), "image/*");     }     intent.putExtra("crop", "true");     intent.putExtra("aspectX", 0.1);     intent.putExtra("aspectY", 0.1);     intent.putExtra("outputX", 150);     intent.putExtra("outputY", 150);     intent.putExtra("return-data", true);     intent.putExtra("scale", true);     startActivityForResult(intent, CROP_PHOTO); }

进入到裁剪页面, 可以自由选择裁剪的比例:

代码如下:

public class MainActivity extends AppCompatActivity {    public final int CROP_PHOTO = 10;    public final int ACTION_TAKE_PHOTO = 20;    private ImageView ivImage;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        //显示图片的imageview        ivImage = (ImageView) findViewById(R.id.ivImage);        //点击跳转拍照        findViewById(R.id.btnPhoto).setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                takePhoto();            }        });    }    @Override    protected void onActivityResult(int requestCode, int resultCode, Intent data) {        File mPhotoFile = new File(getAppFile(this, "images/user_take.jpg"));        switch (requestCode) {            case CROP_PHOTO: //裁剪照片后                if (data != null) {                    Bitmap bitmap = data.getExtras().getParcelable("data");                    ivImage.setImageBitmap(bitmap);                }                //裁剪后删除拍照的照片                if (mPhotoFile.exists()) {                    //noinspection ResultOfMethodCallIgnored                    mPhotoFile.delete();                }                break;            case ACTION_TAKE_PHOTO:                if (mPhotoFile.exists()) {                    cropPic(getAppFile(this, "images/user_take.jpg"));                }                break;        }    }    /**     * 拍照     */    private void takePhoto() {        try {            Intent intent = new Intent("android.media.action.IMAGE_CAPTURE");            File file = new File(getAppFile(this, "images"));            File mPhotoFile = new File(getAppFile(this, "images/user_take.jpg"));            if (!file.exists()) {                file.mkdirs();            }            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {                intent.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);                Uri contentUri = FileProvider.getUriForFile(this, "com.pandaq.pandaeye.fileprovider", mPhotoFile);                intent.putExtra(MediaStore.EXTRA_OUTPUT, contentUri);            } else {                intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(mPhotoFile));            }            startActivityForResult(intent, ACTION_TAKE_PHOTO);        } catch (Exception e) {            e.printStackTrace();        }    }    /**     * 获取本应用在系统的存储目录     */    public static String getAppFile(Context context, String uniqueName) {        String cachePath;        if ((Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState())                || !Environment.isExternalStorageRemovable())                && context.getExternalCacheDir() != null) {            cachePath = context.getExternalCacheDir().getParent();        } else {            cachePath = context.getCacheDir().getParent();        }        return cachePath + File.separator + uniqueName;    }    /**     * 跳转到系统裁剪图片页面     * @param imagePath 需要裁剪的图片路径     */    private void cropPic(String imagePath) {        File file = new File(imagePath);        Intent intent = new Intent("com.android.camera.action.CROP");        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {            intent.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);            Uri contentUri = FileProvider.getUriForFile(this, "com.leon.crop.fileprovider", file);            intent.setDataAndType(contentUri, "image/*");        } else {            intent.setDataAndType(Uri.fromFile(file), "image/*");        }        intent.putExtra("crop", "true");        intent.putExtra("aspectX", 0.1);        intent.putExtra("aspectY", 0.1);        intent.putExtra("outputX", 150);        intent.putExtra("outputY", 150);        intent.putExtra("return-data", true);        intent.putExtra("scale", true);        startActivityForResult(intent, CROP_PHOTO);    }}

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