android中实现从相册中一次性获取多张图片与拍照，并将选中的图片显示出来
1.自定义相册，实现多选
public class SelectAlbumActivity extends BaseActivity {
private ArrayList<String> imageUrls;
private DisplayImageOptions options;
private ImageAdapter imageAdapter;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.ac_image_grid);
initData();
initGallery();
}
private void initData() {
this.imageUrls = new ArrayList<String>();
final String[] columns = {MediaStore.Images.Media.DATA,
MediaStore.Images.Media._ID};
final String orderBy = MediaStore.Images.Media.DATE_TAKEN;
Cursor imagecursor = this
.getApplicationContext()
.getContentResolver()
.query(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, columns,
null, null, orderBy + " DESC");
for (int i = 0; i < imagecursor.getCount(); i++) {
imagecursor.moveToPosition(i);
int dataColumnIndex = imagecursor
.getColumnIndex(MediaStore.Images.Media.DATA);
imageUrls.add(imagecursor.getString(dataColumnIndex));
Log.i("imageUrl", imageUrls.get(i));
}
}
private void initGallery() {
options = new DisplayImageOptions.Builder()
.showStubImage(R.mipmap.add_icon)
.showImageForEmptyUri(R.mipmap.ic_launcher)
.cacheInMemory().cacheOnDisc().build();
imageAdapter = new ImageAdapter(this, imageUrls);
GridView gridView = (GridView) findViewById(R.id.gridview);
gridView.setAdapter(imageAdapter);
// gridView.setOnItemClickListener(new OnItemClickListener() {
// @Override
// public void onItemClick(AdapterView<?> parent, View view,
// int position, long id) {
// startImageGalleryActivity(position);
// }
// });
}
@Override
protected void onStop() {
imageLoader.stop();
super.onStop();
}
public void btnChoosePhotosClick(View v) {
Intent intent=getIntent();
ArrayList<String> selectedItems = imageAdapter.getCheckedItems();
for (int i=0;i<selectedItems.size();i++){
Log.i("TAg------->Select",selectedItems.get(i));
Toast.makeText(SelectAlbumActivity.this,selectedItems.get(i)+"",Toast.LENGTH_LONG).show();
}
Toast.makeText(SelectAlbumActivity.this,
"Total photos selected: " + selectedItems.size(),
Toast.LENGTH_SHORT).show();
intent.putExtra("selectPic",selectedItems);
setResult(RESULT_OK,intent);
finish();
}
}
2.WriteDiaryActivity.java将选中的图片显示出来
public class WriteDiaryActivity extends BaseActivity {
EditText etWrite;
GridView gv;
private List<String> list = new ArrayList<String>();//存储选中图片的url
private final int MAX_PHOTO = 10;//最多20张图
private static final int MY_PERMISSIONS_WRITE_EXTERNAL_STORAGE = 1;
private static final int MY_PERMISSIONS_READ_EXTERNAL_STORAGE = 2;
private WriteDairyAdapter itemAdapter;
private String imgPath;
private int RESULT_LOAD_IMG=1;
// 拍照的requestCode
private static final int CAMERA_REQUEST_CODE = 0x00000010;
// 申请相机权限的requestCode
private static final int PERMISSION_CAMERA_REQUEST_CODE = 0x00000012;
/**
* 用于保存拍照图片的uri
*/
private Uri mCameraUri;
/**
* 用于保存图片的文件路径，Android 10以下使用图片路径访问图片
*/
private String mCameraImagePath;
private int count=0;
/**
* 是否是Android 10以上手机
*/
private boolean isAndroidQ = Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q;
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_write_diary);
initView();
}
private void initView() {
etWrite=findViewById(R.id.etWrite);
gv=findViewById(R.id.gvSelectPic);
gv.setHorizontalSpacing(5);
gv.setVerticalSpacing(5);
list.add("default");
itemAdapter = new WriteDairyAdapter(list,WriteDiaryActivity.this);
gv.setAdapter(itemAdapter);
gv.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
initDialogGrade();
}
});
}
// public void WriteClick(View view){
// switch (view.getId()){
// case R.id.ivBack:
// onBackPressed();
// break;
// case R.id.ivPhotoAlbum:
// initDialogGrade();
// getSystemService(Context.INPUT_METHOD_SERVICE);
// break;
// case R.id.btnCreate:
// break;
// }
// }
private void initDialogGrade() {
LayoutInflater inflater=LayoutInflater.from(WriteDiaryActivity.this);
View view=inflater.inflate(R.layout.selelct_photo_dialog,null);
TextView tv2=view.findViewById(R.id.tv2);
TextView tv3=view.findViewById(R.id.tv3);
// 点击默认图片
// view.setPadding(10,10,10,10);
final Dialog dialog=new Dialog(WriteDiaryActivity.this);
dialog.setContentView(view);
// dialog.create();
// 任何区域关闭dialog
dialog.setCanceledOnTouchOutside(true);
// dialog.getWindow().setBackgroundDrawableResource(R.drawable.dialog_white_bg);
dialog.show();
Window window=dialog.getWindow();
window.setGravity(Gravity.BOTTOM);
window.getDecorView().setPadding(10,10,10,10);
WindowManager manager=getWindowManager();
// 获取屏幕的宽高
Display display= manager.getDefaultDisplay();
WindowManager.LayoutParams p=dialog.getWindow().getAttributes();
p.width= display.getWidth();
dialog.getWindow().setAttributes(p);
// 打开拍照
tv2.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
takePhoto();
count++;
dialog.dismiss();
}
});
// 打开相册
tv3.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// pickPhoto();
// count++;
// startActivity(new Intent(WriteDiaryActivity.this,SelectAlbumActivity.class));
Intent intent=new Intent(WriteDiaryActivity.this,SelectAlbumActivity.class);
startActivityForResult(intent,RESULT_LOAD_IMG);
dialog.dismiss();
}
});
}
//拍照
private void takePhoto() {
int hasCameraPermission = ContextCompat.checkSelfPermission(getApplication(),
Manifest.permission.CAMERA);
if (hasCameraPermission == PackageManager.PERMISSION_GRANTED) {
//有权限，调起相机拍照。
openCamera();
} else {
//没有权限，申请权限。
ActivityCompat.requestPermissions(this,new String[]{Manifest.permission.CAMERA},
PERMISSION_CAMERA_REQUEST_CODE);
}
}
// 相册
private void pickPhoto() {
Intent intent=new Intent(Intent.ACTION_PICK, MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(intent,RESULT_LOAD_IMG);
}
//当图片被选中的返回结果
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
try {
if (requestCode == RESULT_LOAD_IMG && resultCode == RESULT_OK && null != data) {
if (list.size() == MAX_PHOTO) {
removeItem();
refreshAdapter();
return;
}
removeItem();
ArrayList<String> arrayList = data.getStringArrayListExtra("selectPic");
for (int i=0;i<arrayList.size();i++){
list.add(arrayList.get(i));
}
refreshAdapter();
list.add("default");
refreshAdapter();
}
}catch (Exception ex){
Toast.makeText(this, "Something went wrong", Toast.LENGTH_SHORT).show();
}
if (requestCode == CAMERA_REQUEST_CODE) {
if (resultCode == RESULT_OK) {
if (isAndroidQ) {
// Android 10 使用图片uri加载
// ivHeadPic.setImageURI(mCameraUri);
removeItem();
list.add(mCameraUri.toString());
list.add("default");
refreshAdapter();
} else {
// 使用图片路径加载
removeItem();
list.add(mCameraImagePath);
list.add("default");
refreshAdapter();
// ivHeadPic.setImageBitmap(BitmapFactory.decodeFile(mCameraImagePath));
}
} else {
Toast.makeText(this,"取消",Toast.LENGTH_LONG).show();
}
}
}
/**
* 调起相机拍照
*/
private void openCamera() {
Intent captureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
// 判断是否有相机
if (captureIntent.resolveActivity(getPackageManager()) != null) {
File photoFile = null;
Uri photoUri = null;
if (isAndroidQ) {
// 适配android 10
photoUri = createImageUri();
} else {
try {
photoFile = createImageFile();
} catch (IOException e) {
e.printStackTrace();
}
if (photoFile != null) {
mCameraImagePath = photoFile.getAbsolutePath();
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
//适配Android 7.0文件权限，通过FileProvider创建一个content类型的Uri
photoUri = FileProvider.getUriForFile(this, getPackageName() + ".fileprovider", photoFile);
} else {
photoUri = Uri.fromFile(photoFile);
}
}
}
mCameraUri = photoUri;
if (photoUri != null) {
captureIntent.putExtra(MediaStore.EXTRA_OUTPUT, photoUri);
captureIntent.addFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
startActivityForResult(captureIntent, CAMERA_REQUEST_CODE);
}
}
}
/**
* 创建图片地址uri,用于保存拍照后的照片 Android 10以后使用这种方法
*
* @return 图片的uri
*/
private Uri createImageUri() {
String status = Environment.getExternalStorageState();
// 判断是否有SD卡,优先使用SD卡存储,当没有SD卡时使用手机存储
if (status.equals(Environment.MEDIA_MOUNTED)) {
return getContentResolver().insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, new ContentValues());
} else {
return getContentResolver().insert(MediaStore.Images.Media.INTERNAL_CONTENT_URI, new ContentValues());
}
}
/**
* 创建保存图片的文件
* @return
* @throws IOException
*/
private File createImageFile() throws IOException {
String imageName = new SimpleDateFormat("yyyyMMdd_HHmmss", Locale.getDefault()).format(new Date());
File storageDir = getExternalFilesDir(Environment.DIRECTORY_PICTURES);
if (!storageDir.exists()) {
storageDir.mkdir();
}
File tempFile = new File(storageDir, imageName);
if (!Environment.MEDIA_MOUNTED.equals(EnvironmentCompat.getStorageState(tempFile))) {
return null;
}
return tempFile;
}
/**
* 处理权限申请的回调。
*
* @param requestCode
* @param permissions
* @param grantResults
*/
@Override
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
if (requestCode == PERMISSION_CAMERA_REQUEST_CODE) {
if (grantResults.length > 0
&& grantResults[0] == PackageManager.PERMISSION_GRANTED) {
//允许权限，有调起相机拍照。
openCamera();
} else {
//拒绝权限，弹出提示框。
Toast.makeText(this,"拍照权限被拒绝",Toast.LENGTH_LONG).show();
}
}
}
/**
* * 刷新视图
* <p>
*
*/
private void refreshAdapter() {
if (list == null) {
list = new ArrayList<String>();
}
if (itemAdapter == null) {
itemAdapter = new WriteDairyAdapter(list, WriteDiaryActivity.this);
}
if (list.size() == MAX_PHOTO) {
list.remove(list.size() - 1);
}
itemAdapter.notifyDataSetChanged();
}
private void removeItem() {
if (list.size() - 1 != MAX_PHOTO) {
if (list.size() != 0) {//删除默认图片
list.remove(list.size() - 1);
}
}
}
}
3、添加image-loader
implementation 'com.nostra13.universalimageloader:universal-image-loader:1.9.5'
4.添加权限
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
5.适配器以及布局文件可以看 https://download.csdn.net/download/qq_35038014/12633795
本文地址：https://blog.csdn.net/qq_35038014/article/details/107443746