分享一个需要拍照的界面可以直接继承的Activity，附带详细注解

需要拍照的界面可以根据自己项目需求直接继承该Activity，附带详细注解,拍照剪切专题会进行详细讲解，大结局篇给出一个完整的总结，

public abstract class RequestWithTakePhotoActivity extends BaseActivity {

private static final String IMAGE_UNSPECIFIED = "image/*";

private static final String IMAGE_TMP = "photo_tmp.png";

private static final String IMAGE_TMP_2 = "photo_tmp2.png";

private static final int TAKE_PHOTO = 0;

private static final int PIC_PHOTO = 1;

// private static final int CROP_PHOTO = 2;

private static final int CROP_BIG_PICTURE = 3;

private boolean enableCrop = true;

private static final int MAX_LINE = 480;

private Uri imageUri;

protected PopDialog dialog = null;

private ArrayList<Integer> save_images_arr_id = new ArrayList<Integer>();

private ArrayList<String> save_images_arr_paths = new ArrayList<String>();

public final static int GET_PHOTO_RESULT_ID = 6;

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

File outFile = new File(getExternalCacheDir() + "/" + IMAGE_TMP);

imageUri = Uri.fromFile(outFile);

//测试后会发现并没有进入到onCreate方法//不对，虽然不是构造方法，但是子类实现onCrreate方法的时候的super.onCreate(savedInstanceState);就会指向这里的代码

Log.i("ResquestWithTakePotoActivity", "拍照时进入到ResquestWithTakePotoActivity");

}

protected void enableCrop(boolean flag) {//子类用于设置能否剪切的标志

enableCrop = flag;

}

public void imageChooseItem(boolean isShowSelectPhoto) {

LayoutInflater inflater = LayoutInflater.from(this);

View view = inflater.inflate(R.layout.take_photo_select, null);

view.findViewById(R.id.photo_delete).setVisibility(View.GONE);

view.findViewById(R.id.take_photo).setOnClickListener(

new OnClickListener() {

@Override

public void onClick(View v) {

startActionCamera();//拍照按钮点击后，启动照相机

if (dialog != null) {

dialog.cancel();

}

}

});

if (isShowSelectPhoto) {

view.findViewById(R.id.pic_photo).setVisibility(View.VISIBLE);

view.findViewById(R.id.take_photo_line).setVisibility(View.VISIBLE);

view.findViewById(R.id.pic_photo).setOnClickListener(

new OnClickListener() {

@Override

public void onClick(View v) {

// startImagePick();

SelectPhoto();

if (dialog != null) {

dialog.cancel();

}

}

});

} else {

view.findViewById(R.id.take_photo_line).setVisibility(View.GONE);

view.findViewById(R.id.pic_photo).setVisibility(View.GONE);

}

dialog = DialogUtil.showInfo(this,

getResources().getString(R.string.title_select), view,

new DialogInterface.OnClickListener() {

@Override

public void onClick(DialogInterface dialog, int which) {

dialog.cancel();

}

}, false, false);

}

public void imageChooseItemWithDelete(int type, final int index,

boolean isSetBitmap) {

LayoutInflater inflater = LayoutInflater.from(this);

View view = inflater.inflate(R.layout.take_photo_select, null);

Log.e("hf:issetbitamp", isSetBitmap + "");

if (isSetBitmap) {

view.findViewById(R.id.take_photo_line).setVisibility(View.VISIBLE);

view.findViewById(R.id.photo_delete).setVisibility(View.VISIBLE);

} else {

view.findViewById(R.id.photo_delete).setVisibility(View.GONE);

view.findViewById(R.id.take_photo_line).setVisibility(View.GONE);

}

view.findViewById(R.id.pic_photo).setOnClickListener(

new OnClickListener() {

@Override

public void onClick(View v) {

// startImagePick();

SelectPhoto();

if (dialog != null) {

dialog.cancel();

}

}

});

view.findViewById(R.id.take_photo).setOnClickListener(

new OnClickListener() {

@Override

public void onClick(View v) {

startActionCamera();

if (dialog != null) {

dialog.cancel();

}

}

});

view.findViewById(R.id.photo_delete).setOnClickListener(

new OnClickListener() {

@Override

public void onClick(View v) {

deleteImage(index);

if (dialog != null) {

dialog.cancel();

}

}

});

dialog = DialogUtil.showInfo(this,

getResources().getString(R.string.title_select), view,

new DialogInterface.OnClickListener() {

@Override

public void onClick(DialogInterface dialog, int which) {

dialog.cancel();

}

}, false, false);

}

abstract protected void deleteImage(int index);

private void startActionCamera() {//以startActivityForResult的方式跳转到照相机界面

Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);// action is

// capture

intent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);//另存图片地址

startActivityForResult(intent, TAKE_PHOTO);

}

private void startImagePick(Uri uri) {

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

intent.setDataAndType(uri, "image/*");

intent.putExtra("crop", "true");

intent.putExtra("aspectX", getCropX());

intent.putExtra("aspectY", getCropY());

intent.putExtra("outputX", getCropWidth());

intent.putExtra("outputY", getCropHeight());

intent.putExtra("scale", true);

intent.putExtra("return-data", false);

intent.putExtra("scaleUpIfNeeded", true);// 解决当图片大小小于输出大小时，部分机器截取图片黑边

intent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);

intent.putExtra("outputFormat", Bitmap.CompressFormat.JPEG.toString());

intent.putExtra("noFaceDetection", false); // no face detection

startActivityForResult(intent, PIC_PHOTO);

}

private void SelectPhoto() {

Intent intent = new Intent();

intent.setClass(this, SelectFromPhotoAlbumActivity.class);

intent.putExtra("TYPE", "single_pic");

intent.putExtra("SELECTED_IMAGES", save_images_arr_paths);

intent.putExtra("SELECTED_IMAGES_ID", save_images_arr_id);

startActivityForResult(intent, GET_PHOTO_RESULT_ID);

}

@Override

protected void onActivityResult(int requestCode, int resultCode, Intent data) {

switch (requestCode) {

case TAKE_PHOTO:

Log.e("hfdd:", imageUri + "");

if (resultCode != Activity.RESULT_CANCELED) {

cropImageUri(imageUri, CROP_BIG_PICTURE);

}

break;

case CROP_BIG_PICTURE:// from crop_big_picture

Log.e("hf:", imageUri + "");

if (imageUri != null) {

Bitmap bitmap = decodeUriAsBitmap(imageUri);

onImageCroped(bitmap);

} else {

return;

}

break;

case PIC_PHOTO:

if (imageUri != null) {

Bitmap bitmap = decodeUriAsBitmap(imageUri);

onImageCroped(bitmap);

} else {

return;

}

break;

case GET_PHOTO_RESULT_ID:

if (data != null) {

ArrayList<Integer> images_arr_id = data

.getIntegerArrayListExtra("select_photos");

ArrayList<String> images_arr_paths = data

.getStringArrayListExtra("select_photos_paths");

Uri uri = Uri.parse("file://" + images_arr_paths.get(0));

startImagePick(uri);

}

break;

}

super.onActivityResult(requestCode, resultCode, data);

}

private Bitmap decodeUriAsBitmap(Uri uri) {

Bitmap bitmap = null;

try {

bitmap = BitmapFactory.decodeStream(getContentResolver()

.openInputStream(uri));

} catch (FileNotFoundException e) {

e.printStackTrace();

return null;

}

return bitmap;

}

private void cropImageUri(Uri uri, int requestCode) {

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

intent.setDataAndType(uri, "image/*");

intent.putExtra("crop", "true");

intent.putExtra("aspectX", getCropX());

intent.putExtra("aspectY", getCropY());

intent.putExtra("outputX", getCropWidth());

intent.putExtra("outputY", getCropHeight());

intent.putExtra("scale", true);

intent.putExtra("scaleUpIfNeeded", true);// 解决当图片大小小于输出大小时，部分机器截取图片黑边

intent.putExtra(MediaStore.EXTRA_OUTPUT, uri);

intent.putExtra("return-data", false);

intent.putExtra("outputFormat", Bitmap.CompressFormat.JPEG.toString());

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

startActivityForResult(intent, requestCode);

}

protected boolean savePicture(Bitmap image, File picture) {

if (!picture.exists()) {

try {

File path = new File(picture.getParent());

if (!path.exists()) {

if (!path.mkdirs()) {

return false;

}

}

if (!picture.createNewFile()) {

return false;

}

} catch (IOException e) {

e.printStackTrace();

return false;

}

}

BufferedOutputStream stream;

try {

stream = new BufferedOutputStream(new FileOutputStream(picture));

image.compress(Bitmap.CompressFormat.JPEG, 100, stream);

stream.close();

} catch (Exception e) {

e.printStackTrace();

return false;

}

return true;

}

abstract protected int getCropWidth();

abstract protected int getCropHeight();

abstract protected int getCropX();

abstract protected int getCropY();

abstract protected void onImageCroped(Bitmap image);

abstract protected void onImageSelected(Uri uri);

}