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私は1つのWebサービスを呼び出し、多くのデータを含む1つのJSONを得て、これを解析した後、TextViewに3つのテキストを、RecyclerViewにImageViewを1つ表示しようとしました。このデータでは、3つのTextViewはすべてPOJOからのテキストデータを取得しましたが、イメージはロードされていません。 PicassoとGlideライブラリの両方を使って試しました。しかし、サーバーからイメージをロードすることはできません。Picachaを使用してRecyclerViewに画像がロードされない
のAndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.recyclerviewdemo">
<uses-permission android:name="android.permission.INTERNET" />
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
build.gradle
apply plugin: 'com.android.application'
android {
compileSdkVersion 26
buildToolsVersion "26.0.1"
defaultConfig {
applicationId "com.example.recyclerviewdemo"
minSdkVersion 15
targetSdkVersion 26
versionCode 1
versionName "1.0"
testInstrumentationRunner
"android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'),
'proguard-rules.pro'
}
}
packagingOptions {
exclude 'META-INF/LICENSE.txt'
exclude 'META-INF/NOTICE.txt'
exclude 'META-INF/NOTICE'
exclude 'META-INF/LICENSE'
exclude 'META-INF/DEPENDENCIES'
}
}
dependencies {
compile fileTree(include: ['*.jar'], dir: 'libs')
androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2',
{
exclude group: 'com.android.support', module: 'support-annotations'
})
testCompile 'junit:junit:4.12'
compile 'com.android.support:appcompat-v7:26.+'
compile 'com.android.support.constraint:constraint-layout:1.0.2'
compile 'com.github.bumptech.glide:glide:3.5.2'
compile 'com.android.volley:volley:1.0.0'
compile 'org.apache.httpcomponents:httpcore:4.2.4'
compile 'org.apache.httpcomponents:httpmime:4.3'
compile 'com.android.support:recyclerview-v7:26.0.0-alpha1'
compile 'com.android.support:cardview-v7:26.0.0-alpha1'
compile 'com.squareup.picasso:picasso:2.5.2'
}
activity_main.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"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_marginBottom="8dp"
android:layout_height="match_parent"
tools:context="com.example.recyclerviewdemo.MainActivity">
<android.support.v7.widget.RecyclerView
android:id="@+id/rv_service_provider_list"
android:layout_width="368dp"
android:layout_height="wrap_content"
tools:layout_editor_absoluteY="0dp"
tools:layout_editor_absoluteX="8dp" />
</LinearLayout>
service_provider_list_row.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
xmlns:card_view="http://schemas.android.com/apk/res-auto">
<android.support.v7.widget.CardView
android:id="@+id/card_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center"
android:layout_margin="10dp"
android:elevation="10dp"
card_view:cardCornerRadius="3dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:weightSum="4">
<ImageView
android:id="@+id/iv_profile_image"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:layout_gravity="left"
android:layout_marginRight="16dp"
android:layout_weight="3" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:orientation="vertical">
<TextView
android:id="@+id/tv_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_marginBottom="10dp"
android:text="Name"
android:textSize="20dp"
android:textStyle="bold" />
<TextView
android:id="@+id/tv_address"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@id/title"
android:layout_marginBottom="5dp"
android:text="Address" />
<TextView
android:id="@+id/tv_description"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@id/title"
android:maxLines="1"
android:text="Description" />
</LinearLayout>
</LinearLayout>
</android.support.v7.widget.CardView>
</LinearLayout>
MainActivity.java
public class MainActivity extends AppCompatActivity {
private String TAG = "ServiceProviderList";
private ProgressDialog mProgressDialog;
private ArrayList<ServiceProvider> serviceProviderList;
private ServiceProviderAdapter mServiceProviderAdapter;
private RecyclerView rv_service_provider_list;
private RecyclerView.LayoutManager mLayoutManager;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
registerViews();
init();
rv_service_provider_list.setLayoutManager(mLayoutManager);
rv_service_provider_list.setItemAnimator(new DefaultItemAnimator());
rv_service_provider_list.setAdapter(mServiceProviderAdapter);
fetchServiceProviderList();
}
private void fetchServiceProviderList() {
mProgressDialog.setMessage("Downloading json...");
mProgressDialog.show();
JSONObject jsonParams = getJsonParams();
CustomJsonObjectRequest req = new
CustomJsonObjectRequest(AppConfig.BASE_URL, jsonParams,
new Response.Listener<JSONObject>() {
@Override
public void onResponse(JSONObject response) {
Log.d(TAG, response.toString());
mProgressDialog.hide();
JSONArray dataJSONArrayObj = null;
try {
dataJSONArrayObj = response.getJSONArray("data");
} catch (JSONException e) {
e.printStackTrace();
}
serviceProviderList.clear();
for (int i = 0; i < dataJSONArrayObj.length(); i++) {
try {
JSONObject serviceProviderObjs =
dataJSONArrayObj.getJSONObject(i);
ServiceProvider serviceProvider = new
ServiceProvider();
serviceProvider.setServiceProviderId(Integer.parseInt
(serviceProviderObjs.getString("service_provider_id").trim()));
serviceProvider.setName(serviceProviderObjs.getString("name").trim());
serviceProvider.setDescription(serviceProviderObjs.getString
("description").trim());
serviceProvider.setLatitude(Double.parseDouble
(serviceProviderObjs.getString("lat").trim()));
serviceProvider.setLongitude(Double.parseDouble
(serviceProviderObjs.getString("long").trim()));
serviceProvider.setAddress(serviceProviderObjs.getString("address").
trim());
serviceProvider.setImage(serviceProviderObjs.getString("image").trim());
serviceProviderList.add(serviceProvider);
} catch (JSONException e) {
Log.e(TAG, "Json parsing error: " +
e.getMessage());
}
}
mServiceProviderAdapter.notifyDataSetChanged();
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
Log.e(TAG, "Error: " + error.getMessage());
mProgressDialog.hide();
}
});
RequestQueue requestQueue = Volley.newRequestQueue(this);
requestQueue.add(req);
}
public JSONObject getJsonParams() {
JSONObject rootJson = new JSONObject();
try{
rootJson.put("method", "service_provider_list");
JSONObject jsonObject = new JSONObject();
rootJson.put("params", jsonObject);
} catch (Exception ex){
ex.printStackTrace();
}
Log.d("JsonForming", rootJson.toString());
return rootJson;
}
private void registerViews() {
rv_service_provider_list = (RecyclerView)
findViewById(R.id.rv_service_provider_list);
}
private void init() {
mProgressDialog = new ProgressDialog(this);
serviceProviderList = new ArrayList<ServiceProvider>();
mServiceProviderAdapter = new
ServiceProviderAdapter(serviceProviderList, MainActivity.this);
mLayoutManager = new LinearLayoutManager(getApplicationContext());
}
}
ServiceProviderAdapter.java
public class ServiceProviderAdapter extends
RecyclerView.Adapter<ServiceProviderAdapter.MyViewHolder> {
private Context mContext;
private ArrayList<ServiceProvider> serviceProviderList;
private ProgressBar mProgressDialog;
public ServiceProviderAdapter(ArrayList<ServiceProvider>
serviceProviderList, Context mContext) {
this.serviceProviderList = serviceProviderList;
this.mContext = mContext;
mProgressDialog = new ProgressBar(mContext);
}
public class MyViewHolder extends RecyclerView.ViewHolder {
public TextView tv_name, tv_address, tv_description;
public ImageView iv_profile_image;
public MyViewHolder(View view) {
super(view);
iv_profile_image = (ImageView)
view.findViewById(R.id.iv_profile_image);
tv_name = (TextView) view.findViewById(R.id.tv_name);
tv_address = (TextView) view.findViewById(R.id.tv_address);
tv_description = (TextView) view.findViewById(R.id.tv_description);
}
}
@Override
public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View itemView = LayoutInflater.from(parent.getContext()).
inflate(R.layout.service_provider_list_row, parent, false);
return new MyViewHolder(itemView);
}
@Override
public void onBindViewHolder(MyViewHolder holder, int position) {
ServiceProvider serviceProvider = serviceProviderList.get(position);
/*Glide.with(mContext).load(serviceProvider.getImage())
.thumbnail(0.5f)
.crossFade()
.diskCacheStrategy(DiskCacheStrategy.ALL)
.into(holder.iv_profile_image);*/
Picasso.with(mContext).load(serviceProvider.getImage())
.fit()
.centerCrop()
.into(holder.iv_profile_image);
holder.tv_name.setText(serviceProvider.getName());
holder.tv_address.setText(serviceProvider.getAddress());
holder.tv_description.setText(serviceProvider.getDescription());
Log.d("ServiceProviderAdapter", "Adapting Data to Views");
}
@Override
public int getItemCount() {
return serviceProviderList.size();
}
}
返信を確認し、そのURLをコピーしてブラウザで実行してください –
アダプタコード – MadScientist