[英]Choose Image in Gallery
I have this code, but when I click at the Button the Gallery will open and when I choose a image the Gallery will close again. 我有此代码,但是当我单击按钮时,图库将打开,而当我选择图像时,图库将再次关闭。 And nothing will happen. 什么也不会发生。
public class MainActivity extends AppCompatActivity { 公共类MainActivity扩展了AppCompatActivity {
private Button loadimagebutton;
private ImageView imageView;
private static int RESULT_LOAD_IMAGE = 1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
loadimagebutton = (Button) findViewById(R.id.button);
loadimagebutton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent i = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(i, RESULT_LOAD_IMAGE);
}
});
}
protected void onActivityResult(int requestCode, int resultCode, Intent data){
super.onActivityResult(requestCode, resultCode, data);
if(requestCode == RESULT_LOAD_IMAGE && resultCode == RESULT_OK && null != data){
Uri selectedImage = data.getData();
String[] filePathColumn = { MediaStore.Images.Media.DATA };
Cursor cursor = getContentResolver().query(selectedImage, filePathColumn, null, null, null);
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
String picturePath = cursor.getString(columnIndex);
cursor.close();
imageView = (ImageView)findViewById(R.id.imageView);
imageView.setImageBitmap(BitmapFactory.decodeFile(picturePath));
}
else{
Toast.makeText(getApplicationContext(), "ERROR", Toast.LENGTH_LONG).show();
}
}
What is wrong? 怎么了?
I hope this help you : 希望对您有帮助:
private String getRealPathFromUri(Uri contentURI) {
String result = "";
Cursor cursor = getContentResolver().query(contentURI, null, null, null, null);
if (cursor == null) {
result = contentURI.getPath();
} else {
cursor.moveToFirst();
int idx = cursor.getColumnIndex(MediaStore.Images.ImageColumns.DATA);
result = cursor.getString(idx);
cursor.close();
}
return result;
}
and in onActivityResult(); 并在onActivityResult();中;
imageView = (ImageView)findViewById(R.id.imageView);
imageView.setImageBitmap(BitmapFactory.decodeFile(getRealPathFromUri(uri)));
@Override
protected void onActivityResult(int requestCode, int resultCode,
Intent imageReturnedIntent) {
super.onActivityResult(requestCode, resultCode, imageReturnedIntent);
switch (requestCode) {
case RESULT_LOAD_IMG:
if (resultCode == RESULT_OK) {
Uri selectedImage = imageReturnedIntent.getData();
String[] filePathColumn = {MediaStore.Images.Media.DATA};
Cursor cursor = getContentResolver().query(
selectedImage, filePathColumn, null, null, null);
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
String filePath = cursor.getString(columnIndex);
cursor.close();
Bitmap bMap = BitmapFactory.decodeFile(filePath);
handlePhotoUpload(bMap);
}
}
}
and in your handlePhotoUpload method you can set the ImageView to the Bitmap 并在handlePhotoUpload方法中将ImageView设置为Bitmap
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