1.效果圖如下
點擊選擇照相后,彈出如下選擇對話框:
	
2. Dialog實現
布局
<LinearLayout xmlns:android/58979.html">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>
上面的高度和顏色,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">從相冊選擇</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 創建
在style文件里面添加主題及dialog彈出動畫
<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> <!-- 邊框 --> <item name="android:windowFrame">@null</item> <!-- Dialog以外的區域模糊效果 --> <item name="android:backgroundDimEnabled">true</item> <!-- 無標題 --> <item name="android:windowNoTitle">true</item> <!-- 半透明 --> <item name="android:windowIsTranslucent">true</item> <!-- Dialog進入及退出動畫 --> <item name="android:windowAnimationStyle">@style/style_inner_map_dialog_animation</item><style name="style_inner_map_dialog_animation"> <!--dialog的進出動畫--> <item name="android:windowEnterAnimation">@anim/scale_alpha_to_enter</item> <item name="android:windowExitAnimation">@anim/scale_alpha_to_exit</item></style>
dialog創建
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;//設置dialog 在布局中的位置   window.setAttributes(attr);  } } dialog.show();}Dialig 點擊事件
	 @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. 選擇圖片
定義事件類型
private static final int PHOTO_REQUEST_CAREMA = 1;// 拍照 private static final int PHOTO_REQUEST_GALLERY = 2;// 從相冊中選擇 private static final int PHOTO_REQUEST_CUT = 3;// 結果
從相冊選取圖片
 /***  * 進入系統相冊界面  */ 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); }手機拍照后選取圖片
 protected void takePhotos() {  Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);  startActivityForResult(intent, PHOTO_REQUEST_CAREMA); }圖片選擇后,最終都會把數據返回到onActivityResult()方法里面,所以我們需要在activity里面重寫此方法
@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");     //將Bitmap轉化為uri     Uri uri = saveBitmap(photo, "temp");     //啟動圖像裁剪     cropPhoto(uri);    }    break;   case PHOTO_REQUEST_CUT:    LogUtil.d("abroadUseActivity2", "裁剪");    // 從剪切圖片返回的數據    if (data == null) {     return;    }    bitmap = data.getParcelableExtra("data");    if (bitmap == null) {//     return;    }    // TODO 此處我們便獲得了bitmap對象,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) {  // 裁剪圖片意圖  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);  // 裁剪后輸出圖片的尺寸大小  intent.putExtra("outputX", 250);  intent.putExtra("outputY", 250);  intent.putExtra("outputFormat", "JPEG");// 圖片格式  intent.putExtra("noFaceDetection", true);// 取消人臉識別  intent.putExtra("return-data", true);  // 開啟一個帶有返回值的Activity,請求碼為PHOTO_REQUEST_CUT  startActivityForResult(intent, PHOTO_REQUEST_CUT); }拍照后需要先把數據保存一個臨時的文件,然后再獲取文件,才能裁剪
/**  * 把bitmap保存到本地  *  * @param bm  bitmap  * @param dirPath 路徑  * @return 文件的uri  */ private Uri saveBitmap(Bitmap bm, String dirPath) {  //新建文件夾用于存放裁剪后的圖片  File tmpDir = new File(Environment.getExternalStorageDirectory() + "/" + dirPath);  if (!tmpDir.exists()) {   tmpDir.mkdir();  }  //新建文件存儲裁剪后的圖片  File img = new File(tmpDir.getAbsolutePath() + "/feedback.png");  try {   //打開文件輸出流   FileOutputStream fos = new FileOutputStream(img);   //將bitmap壓縮后寫入輸出流(參數依次為圖片格式、圖片質量和輸出流)   bm.compress(Bitmap.CompressFormat.JPEG, 100, fos);   fos.flush();   fos.close();   //返回File類型的Uri   return Uri.fromFile(img);  } catch (FileNotFoundException e) {   e.printStackTrace();   return null;  } catch (IOException e) {   e.printStackTrace();   return null;  } }4.注意事項
	本來選擇后不打算裁剪,但是在小米6等手機上,不裁剪容易崩潰,而裁剪的另一個好處就是壓縮圖片
	在我們獲取bitmap后,可以在那里做一些業務操作,但是一定要記得把bitmap文件回收,不然容易導致內存泄漏
總結
以上所述是小編給大家介紹的Andoroid實現底部圖片選擇Dialog效果,希望對大家有所幫助,如果大家有任何疑問請給我留言,小編會及時回復大家的。在此也非常感謝大家對VEVB武林網網站的支持!
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