我想从画廊创建一个图片选择器。我使用代码
intent = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(intent, TFRequestCodes.GALLERY);
我的问题是在这个活动和视频文件显示。是否有一种方法可以过滤显示的文件,以便在此活动中不显示视频文件?
我想从画廊创建一个图片选择器。我使用代码
intent = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(intent, TFRequestCodes.GALLERY);
我的问题是在这个活动和视频文件显示。是否有一种方法可以过滤显示的文件,以便在此活动中不显示视频文件?
当前回答
绝对的。试试这个:
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(Intent.createChooser(intent, "Select Picture"), PICK_IMAGE);
不要忘记创建常量PICK_IMAGE,这样当用户从图库中返回时,你就可以识别出来:
public static final int PICK_IMAGE = 1;
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data)
{
if (requestCode == PICK_IMAGE) {
//TODO: action
}
}
这就是我对图片库的称呼。把它放进去,看看是否对你有用。
编辑:
这会打开Documents应用程序。允许用户使用他们可能已经安装的任何图库应用程序:
Intent getIntent = new Intent(Intent.ACTION_GET_CONTENT);
getIntent.setType("image/*");
Intent pickIntent = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
pickIntent.setType("image/*");
Intent chooserIntent = Intent.createChooser(getIntent, "Select Image");
chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS, new Intent[] {pickIntent});
startActivityForResult(chooserIntent, PICK_IMAGE);
其他回答
OnActivityResult方法已弃用
val singleImageResultLauncher =
registerForActivityResult(ActivityResultContracts.StartActivityForResult()) { result ->
if (result.resultCode == Activity.RESULT_OK) {
// There are no request codes
val data: Intent? = result.data
val selectedImageUri: Uri? = data?.data
if (null != selectedImageUri) {
// Get the path from the Uri
val path = getPathFromURI(selectedImageUri)
findViewById<TextView>(R.id.textView).text = path
findViewById<ImageView>(R.id.imageView2).setImageURI(selectedImageUri)
}
}
}
findViewById<Button>(R.id.oneImageSelectBtn).setOnClickListener {
val intent = Intent()
intent.type = "image/*"
intent.action = Intent.ACTION_GET_CONTENT
intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, false)
singleImageResultLauncher.launch(Intent.createChooser(intent, "Select Picture"))
}
private fun getPathFromURI(uri: Uri?): String {
var path = ""
if (contentResolver != null) {
val cursor = contentResolver.query(uri!!, null, null, null, null)
if (cursor != null) {
cursor.moveToFirst()
val idx = cursor.getColumnIndex(MediaStore.Images.ImageColumns.DISPLAY_NAME)
path = cursor.getString(idx)
cursor.close()
}
}
return path
}
如果你只是寻找图像和多重选择。
看一次https://stackoverflow.com/a/15029515/1136023
这对将来很有帮助。我个人觉得使用MultipleImagePick很棒。
2021 Kotlin解决方案与新版本的Fragment:
dependencies {
implementation "androidx.fragment:fragment:1.3.3"
}
class YourFragment : Fragment() {
private val fileChooserContract = registerForActivityResult(ActivityResultContracts.GetContent()) { imageUri ->
if (imageUri != null) {
// imageUri now contains URI to selected image
}
}
// ...
fun openFileChooser() {
fileChooserContract.launch("image/*")
}
}
下面是kotlin中util方法的工作代码:
fun launchGalleryWithFragment() {
val intent = Intent(Intent.ACTION_PICK, MediaStore.Images.Media.EXTERNAL_CONTENT_URI)
intent.type = "image/*"
startActivityForResult(Intent.createChooser(intent, "Select Picture"), 1001)
}
现在重写onActivityResult方法:
override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
super.onActivityResult(requestCode, resultCode, data)
var path: Uri? = null
if (requestCode == PICK_IMAGE_REQUEST && resultCode == Activity.RESULT_OK) {
if(dataIntent == null || dataIntent.data == null){
return null
}
path = dataIntent.data
}
}
对于只从本地选择添加这个:
i.putExtra(Intent.EXTRA_LOCAL_ONLY,true)
这个工作得很好:
val i = Intent(Intent.ACTION_GET_CONTENT,MediaStore.Images.Media.EXTERNAL_CONTENT_URI)
i.type = "image/*"
i.putExtra(Intent.EXTRA_LOCAL_ONLY,true)
startActivityForResult(Intent.createChooser(i,"Select Photo"),pickImageRequestCode)