1.效果图如下

点击选择照相后，弹出如下选择对话框：

2. Dialog实现

布局

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical"> <TextView android:id="@+id/abroad_takephoto" android:layout_width="match_parent" android:layout_height="@dimen/abroad_dialog_item_hight" android:background="@drawable/abroad_dialogitem_selector" android:gravity="center" android:text="@string/abroad_photo" android:textColor="@color/abroad_dialog_textcolor" android:textSize="@dimen/abroad_dialog_textsize" /> <View android:layout_width="match_parent" android:layout_height="@dimen/abroad_dialog_view_hight" android:background="@color/abroad_dialog_view_bg" /> <TextView android:id="@+id/abroad_choosephoto" android:layout_width="match_parent" android:layout_height="@dimen/abroad_dialog_item_hight" android:background="@drawable/abroad_dialogitem_selector" android:gravity="center" android:text="@string/abroad_choosephotp" android:textColor="@color/abroad_dialog_textcolor" android:textSize="@dimen/abroad_dialog_textsize" /> <TextView android:id="@+id/abroad_choose_cancel" android:layout_width="match_parent" android:layout_height="@dimen/abroad_dialog_item_hight" android:layout_marginTop="@dimen/abroad_feedback_top" android:background="@drawable/abroad_dialogitem_selector" android:gravity="center" android:text="@string/abroad_cancel" android:textColor="@color/abroad_dialog_textcolor" android:textSize="@dimen/abroad_dialog_textsize" /></LinearLayout>

上面的高度和颜色,文字：

<color name="abroad_dialog_item">#ffffff</color> <color name="abroad_dialog_item_press">#dfdfdf</color> <color name="abroad_dialog_textcolor">#222222</color> <color name="abroad_dialog_view_bg">#cccccc</color> <dimen name="abroad_dialog_item_hight">45dp</dimen> <dimen name="abroad_feedback_top">8dp</dimen> <dimen name="abroad_dialog_textsize">18sp</dimen> <string name="abroad_photo">拍照</string> <string name="abroad_choosephotp">从相册选择</string> <string name="abroad_cancel">取消</string>

控件selector

<?xml version="1.0" encoding="utf-8"?><selector xmlns:android="http://schemas.android.com/apk/res/android"> <item android:drawable="@color/abroad_dialog_item_press" android:state_pressed="true" /> <item android:drawable="@color/abroad_dialog_item" /></selector>

Dialog 创建

在style文件里面添加主题及dialog弹出动画

<style name="ActionSheetDialogStyle" parent="@android:style/Theme.Dialog"> <!-- 背景透明 --> <item name="android:windowBackground">@android:color/transparent</item> <item name="android:windowContentOverlay">@null</item> <!-- 浮于Activity之上 --> <item name="android:windowIsFloating">true</item> <!-- 边框 --> <item name="android:windowFrame">@null</item> <!-- Dialog以外的区域模糊效果 --> <item name="android:backgroundDimEnabled">true</item> <!-- 无标题 --> <item name="android:windowNoTitle">true</item> <!-- 半透明 --> <item name="android:windowIsTranslucent">true</item> <!-- Dialog进入及退出动画 --> <item name="android:windowAnimationStyle">@style/style_inner_map_dialog_animation</item><style name="style_inner_map_dialog_animation"> <!--dialog的进出动画--> <item name="android:windowEnterAnimation">@anim/scale_alpha_to_enter</item> <item name="android:windowExitAnimation">@anim/scale_alpha_to_exit</item></style>

dialog创建

private TextView cancel;private TextView takePhoto;private TextView choosePhoto;private Dialog dialog;public void chosePhotoDialog() { dialog = new Dialog(this, R.style.ActionSheetDialogStyle); inflate = LayoutInflater.from(this).inflate(R.layout.view_abroad_choosephoto_dialog, null); choosePhoto = (TextView) inflate.findViewById(R.id.abroad_choosephoto); takePhoto = (TextView) inflate.findViewById(R.id.abroad_takephoto); cancel = (TextView) inflate.findViewById(R.id.abroad_choose_cancel); choosePhoto.setOnClickListener(this); takePhoto.setOnClickListener(this); cancel.setOnClickListener(this); dialog.setContentView(inflate); Window window = dialog.getWindow(); if (dialog != null && window != null) { window.getDecorView().setPadding(0, 0, 0, 0); WindowManager.LayoutParams attr = window.getAttributes(); if (attr != null) { attr.height = ViewGroup.LayoutParams.WRAP_CONTENT; attr.width = ViewGroup.LayoutParams.MATCH_PARENT; attr.gravity = Gravity.BOTTOM;//设置dialog 在布局中的位置 window.setAttributes(attr); } } dialog.show();}

Dialig 点击事件

@Override
public void onClick(View view) {
switch (view.getId()) {
case R.id.abroad_choosephoto:
pickAlbum();
break;
case R.id.abroad_takephoto:
takePhotos();
break;
case R.id.abroad_choose_cancel:
dialog.dismiss();
}
dialog.dismiss();
}

3. 选择图片

定义事件类型

private static final int PHOTO_REQUEST_CAREMA = 1;// 拍照 private static final int PHOTO_REQUEST_GALLERY = 2;// 从相册中选择 private static final int PHOTO_REQUEST_CUT = 3;// 结果

从相册选取图片

/*** * 进入系统相册界面 */ private void pickAlbum() { Intent intent = new Intent(Intent.ACTION_PICK, null); intent.setDataAndType(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, "image/*"); startActivityForResult(intent, PHOTO_REQUEST_GALLERY); }

手机拍照后选取图片

protected void takePhotos() { Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); startActivityForResult(intent, PHOTO_REQUEST_CAREMA); }

图片选择后，最终都会把数据返回到onActivityResult（）方法里面，所以我们需要在activity里面重写此方法

@Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { switch (requestCode) { case PHOTO_REQUEST_GALLERY: if (data != null) { Uri uri = handleImage(data); cropPhoto(uri); } break; case PHOTO_REQUEST_CAREMA: if (resultCode == RESULT_CANCELED) { return; } if (data != null) { Bitmap photo = data.getParcelableExtra("data"); //将Bitmap转化为uri Uri uri = saveBitmap(photo, "temp"); //启动图像裁剪 cropPhoto(uri); } break; case PHOTO_REQUEST_CUT: LogUtil.d("abroadUseActivity2", "裁剪"); // 从剪切图片返回的数据 if (data == null) { return; } bitmap = data.getParcelableExtra("data"); if (bitmap == null) {// return; } // TODO 此处我们便获得了bitmap对象，做其他操作 bitmap.recycle(); break; default: break; } super.onActivityResult(requestCode, resultCode, data); }

裁剪的方法

private void cropPhoto(Uri uri) { // 裁剪图片意图 Intent intent = new Intent("com.android.camera.action.CROP"); intent.setDataAndType(uri, "image/*"); intent.putExtra("crop", "true"); // 裁剪框的比例，1：1 intent.putExtra("aspectX", 1); intent.putExtra("aspectY", 1); // 裁剪后输出图片的尺寸大小 intent.putExtra("outputX", 250); intent.putExtra("outputY", 250); intent.putExtra("outputFormat", "JPEG");// 图片格式 intent.putExtra("noFaceDetection", true);// 取消人脸识别 intent.putExtra("return-data", true); // 开启一个带有返回值的Activity，请求码为PHOTO_REQUEST_CUT startActivityForResult(intent, PHOTO_REQUEST_CUT); }

拍照后需要先把数据保存一个临时的文件，然后再获取文件，才能裁剪

/** * 把bitmap保存到本地 * * @param bm bitmap * @param dirPath 路径 * @return 文件的uri */ private Uri saveBitmap(Bitmap bm, String dirPath) { //新建文件夹用于存放裁剪后的图片 File tmpDir = new File(Environment.getExternalStorageDirectory() + "/" + dirPath); if (!tmpDir.exists()) { tmpDir.mkdir(); } //新建文件存储裁剪后的图片 File img = new File(tmpDir.getAbsolutePath() + "/feedback.png"); try { //打开文件输出流 FileOutputStream fos = new FileOutputStream(img); //将bitmap压缩后写入输出流(参数依次为图片格式、图片质量和输出流) bm.compress(Bitmap.CompressFormat.JPEG, 100, fos); fos.flush(); fos.close(); //返回File类型的Uri return Uri.fromFile(img); } catch (FileNotFoundException e) { e.printStackTrace(); return null; } catch (IOException e) { e.printStackTrace(); return null; } }

4.注意事项

本来选择后不打算裁剪，但是在小米6等手机上，不裁剪容易崩溃，而裁剪的另一个好处就是压缩图片
在我们获取bitmap后，可以在那里做一些业务操作，但是一定要记得把bitmap文件回收，不然容易导致内存泄漏

总结

以上所述是小编给大家介绍的Andoroid实现底部图片选择Dialog效果，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对网站的支持！