呼叫系統相機拍照和選擇系統相簿-適配7.0以上系統
現在很多apk都有呼叫系統相機進行拍照和選擇系統相簿,GitHub和各大網站都有很多封裝的,這裡就不zb了!
直接上程式碼吧:拍照和選擇系統相簿都適配了7.0以上系統,程式碼都有註釋
“ private static final int TAKE_PHONE = 1;
private static final int CHOOSE_PHONE = 2;
private Button mTakePhoneBtn;
private ImageView mImagePic;
private Uri imageUri;
private Button mChoosePhoneBtn;
private File mPictureFile;
@Override
public void onClick(View v) {
int id = v.getId();
switch (id) {
// 拍照的點選事件
case R.id.take_phone:
//建立File物件 用於儲存拍照後的圖片
String fileName = DateFormat.format(“yyyyMMdd_hhmmss”, Calendar.getInstance(Locale.CHINA)) + “.jpg”;
mPictureFile = new File(Environment.getExternalStorageDirectory()
.getAbsolutePath()+”/picture”,fileName);
//判斷7.0以上系統(7.0以上對檔案的讀取做了限制 FileProvider特殊的內容提供器)
if(Build.VERSION.SDK_INT >=24) {
imageUri = FileProvider.getUriForFile(MainActivity.this,”android.support.datasave.fileprovider”,mPictureFile);
}else {
imageUri = Uri.fromFile(mPictureFile);
}
//啟動相機程式
Intent intent = new Intent(“android.media.action.IMAGE_CAPTURE”);
intent.putExtra(MediaStore.EXTRA_OUTPUT,imageUri);
startActivityForResult(intent,TAKE_PHONE);
break;
case R.id.choose_phone: // 選擇照片的點選事件 /*對WRITE_WXTERNAL_STORAGE 執行時許可權進行動態申請*/ if(ContextCompat.checkSelfPermission(MainActivity.this, Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED){ ActivityCompat.requestPermissions(this,new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE},CHOOSE_PHONE); }else { openAlbum(); } break; default: break; } } //開啟系統相簿 private void openAlbum() { Intent intent = new Intent("android.intent.action.GET_CONTENT"); intent.setType("image/*"); startActivityForResult(intent,CHOOSE_PHONE); } @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { switch (requestCode) { case TAKE_PHONE: if(resultCode == RESULT_OK) { //result 返回的是-1 表示拍照成功 返回的是 0 表示拍照失敗 //將拍攝的圖片顯示出來,並保持在本地檔案,通知系統相簿去更新 try { //將.jpg解析成bitmap Bitmap bitmap = BitmapFactory.decodeStream(getContentResolver().openInputStream(imageUri)); mImagePic.setImageBitmap(bitmap); Uri uri = Uri.fromFile(mPictureFile); Intent intent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE); intent.setData(uri); this.sendBroadcast(intent); } catch (FileNotFoundException e) { e.printStackTrace(); } } break; case CHOOSE_PHONE: if(resultCode == RESULT_OK) { //判斷手機系統版本號 if(Build.VERSION.SDK_INT >=19) { //4.4版本以上,返回的是一個封裝過的uri,需要解析 handleImageOnkitKat(data); }else { //4.4以下 handleImageBeforekitKat(data); } } break; default: break; } } private void handleImageBeforekitKat(Intent data) { Uri uri = data.getData(); String imagePath = getImagePath(uri, null); disPlayImage(imagePath); } @TargetApi(19) private void handleImageOnkitKat(Intent data) { String imagePath = null; Uri uri = data.getData(); if(DocumentsContract.isDocumentUri(this,uri)) { //如果是document型別的uri,則通過document id處理 String documentId = DocumentsContract.getDocumentId(uri); if("com.android.providers.media.documents".equals(uri.getAuthority())) { //解析出數字格式的id String id = documentId.split(":")[1]; String selection = MediaStore.Images.Media._ID + "=" + id; imagePath = getImagePath(MediaStore.Images.Media.EXTERNAL_CONTENT_URI,selection); }else if("com.android.providers.downloads.documents".equals(uri.getAuthority())) { Uri contentUri = ContentUris.withAppendedId(Uri.parse("content://downloads/public_downloads"), Long.valueOf(documentId)); imagePath = getImagePath(contentUri,null); } }else if("content".equalsIgnoreCase(uri.getScheme())) { //如果是content型別的uri 則使用普通方式處理 imagePath = getImagePath(uri,null); }else if("file".equalsIgnoreCase(uri.getScheme())) { //如果是file型別的uri 直接獲取圖片路徑即可 imagePath = uri.getPath(); } //根據圖片路徑顯示圖片 disPlayImage(imagePath); }
// 顯示圖片
private void disPlayImage(String imagePath) {
if(imagePath != null) {
Bitmap bitmap = BitmapFactory.decodeFile(imagePath);
mImagePic.setImageBitmap(bitmap);
}else {
Toast.makeText(this,”獲取圖片失敗”,Toast.LENGTH_LONG).show();
}
}
private String getImagePath(Uri ContentUri, String selection) {
String path = null;
//通過uri和selection來獲取真實的圖片路徑
Cursor cursor = getContentResolver().query(ContentUri, null, selection, null, null);
if(cursor != null) {
if(cursor.moveToFirst()) {
path = cursor.getString(cursor.getColumnIndex(MediaStore.Images.Media.DATA));
}
cursor.close();
}
return path;
}
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
switch (requestCode) {
case CHOOSE_PHONE :
if(grantResults.length>0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
openAlbum();
}else {
Toast.makeText(this,"您必須同意該許可權",Toast.LENGTH_LONG).show();
}
break;
}
}
}`
“`
以上:適配了7.0以上系統 註釋已經很清楚了