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我一直试图让图库工作。部分是因为它是一个片段。 我想在这个片段中做的是拾取图像，在我的应用程序的文件夹中复制一个副本，将图像缩放到我的图像视图缩略图。此外，应用程序的其他部分使用此图像，因此保存图像的位置。我正在使用Realm来保存该位置。从图库中挑选图像并在图像视图中创建缩略图
谢谢您的帮助
下面是代码：
import android.content.Context;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v7.widget.AppCompatImageView;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.ImageView;
import android.content.Intent;
import android.content.Intent;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.provider.MediaStore;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.util.Log;
import android.view.View;
import com.heinrichreimersoftware.materialintro.slide.FragmentSlide;
import io.realm.Realm;
public class Step3 extends FragmentSlide.FragmentSlideFragment implements View.OnClickListener {
boolean STEP3_PROCEEDABLE = true;
private static final int PICK_IMAGE = 1;
AppCompatImageView imgView;
Button imgButton;
private OnFragmentInteractionListener mListener;
public Step3(){
//Required empty public constructor
}
/**
* Use this factory method to create a new instance of
* this fragment using the provided parameters.
*/
public static Step3 newInstance() {
Step3 fragment = new Step3();
return fragment;
}
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
final View rootView = inflater.inflate(R.layout.add_routine_slide3, container, false);
imgButton = (Button) rootView.findViewById(R.id.imgButton);
imgView = (AppCompatImageView) rootView.findViewById(R.id.imgView);
imgButton = (Button) inflater.inflate(R.layout.add_routine_slide3, container, false);
imgButton.setOnClickListener(this);
return rootView;
}
public void onButtonPressed() {
if (mListener != null) {
mListener.onFragmentInteraction(STEP3_PROCEEDABLE);
}
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);
}
@Override
public void onAttach(Context context) {
super.onAttach(context);
if (context instanceof OnFragmentInteractionListener) {
mListener = (OnFragmentInteractionListener) context;
} else {
throw new RuntimeException(context.toString()
+ " must implement OnFragmentInteractionListener");
}
}
@Override
public void onDetach() {
super.onDetach();
mListener = null;
}
/**
* This interface must be implemented by activities that contain this
* fragment to allow an interaction in this fragment to be communicated
* to the activity and potentially other fragments contained in that
* activity.
* <p/>
* See the Android Training lesson <a href=
* "http://developer.android.com/training/basics/fragments/communicating.html"
* >Communicating with Other Fragments</a> for more information.
*/
public interface OnFragmentInteractionListener {
void onFragmentInteraction(boolean proceedable);
}
}这里是XML
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingBottom="@dimen/activity_vertical_margin">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:layout_gravity="center"
android:gravity="center"
android:foregroundGravity="center"
android:weightSum="1">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Rou_Image"
android:textAppearance="?android:attr/textAppearanceLarge"
android:gravity="center"
/>
<TextView
android:paddingTop="@dimen/activity_vertical_margin"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Add a picture to capture your routine."
android:textAppearance="?android:attr/textAppearanceMedium"
android:gravity="center"
/>
<Button
android:text="Select Image"
android:layout_width="158dp"
android:layout_height="wrap_content"
android:id="@+id/imgButton" />
<AppCompatImageView
android:layout_width="137dp"
android:layout_height="wrap_content"
app:srcCompat="@android:drawable/gallery_thumb"
android:id="@+id/imgView"
android:layout_weight="0.20" />
</LinearLayout>
</LinearLayout>