我的应用程序在 Android 6 崩溃,
当我调用 notifydatasetchanged()
时,我正在使用自定义适配器 RecyclerView
进行Retrofit:方法无效 RecyclerView
这是我的适配器类
AnswersAdapter.java
public class AnswersAdapter extends RecyclerView.Adapter<AnswersAdapter.ViewHolder> {
private List<Item> mItems;
private Context mContext;
private PostItemListener mItemListener;
public class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener{
public TextView titleTv;
PostItemListener mItemListener;
public ViewHolder(View itemView, PostItemListener postItemListener) {
super(itemView);
titleTv = itemView.findViewById(android.R.id.text1);
this.mItemListener = postItemListener;
itemView.setOnClickListener(this);
}
@Override
public void onClick(View view) {
Item item = getItem(getAdapterPosition());
this.mItemListener.onPostClick(item.getAnswerId());
notifyDataSetChanged();
}
}
public AnswersAdapter(Context context, List<Item> posts, PostItemListener itemListener) {
mItems = posts;
mContext = context;
mItemListener = itemListener;
}
@Override
public AnswersAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
Context context = parent.getContext();
LayoutInflater inflater = LayoutInflater.from(context);
View postView = inflater.inflate(android.R.layout.simple_list_item_1, parent, false);
ViewHolder viewHolder = new ViewHolder(postView, this.mItemListener);
return viewHolder;
}
@Override
public void onBindViewHolder(AnswersAdapter.ViewHolder holder, int position) {
Item item = mItems.get(position);
TextView textView = holder.titleTv;
textView.setText(item.getOwner().getDisplayName());
}
@Override
public int getItemCount() {
return mItems.size();
}
public void updateAnswers(List<Item> items) {
mItems.clear();
mItems.addAll(items);
this.notifyDataSetChanged();
}
private Item getItem(int adapterPosition) {
return mItems.get(adapterPosition);
}
public interface PostItemListener {
void onPostClick(long id);
}
}
这是我的主要活动 MainActivity.java
public class MainActivity extends AppCompatActivity {
private AnswersAdapter mAdapter;
private SOService mService;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mService = ApiUtils.getSOService();
RecyclerView mRecyclerView = findViewById(R.id.rvawnser);
mAdapter = new AnswersAdapter(this, new ArrayList<Item>(0),
new AnswersAdapter.PostItemListener() {
@Override
public void onPostClick(long id) {
Toast.makeText(MainActivity.this, "Post id is" + id, Toast.LENGTH_SHORT).show();
}
});
RecyclerView.LayoutManager layoutManager = new LinearLayoutManager(this);
mRecyclerView.setLayoutManager(layoutManager);
mRecyclerView.setAdapter(mAdapter);
mRecyclerView.setHasFixedSize(true);
RecyclerView.ItemDecoration itemDecoration = new DividerItemDecoration(this, DividerItemDecoration.VERTICAL);
mRecyclerView.addItemDecoration(itemDecoration);
loadAnswers();
}
public void loadAnswers() {
mService.getAnswers().subscribeOn(Schedulers.io()).observeOn(AndroidSchedulers.mainThread())
.subscribe(new Subscriber<SOAnswersResponse>() {
@Override
public void onCompleted() {
}
@Override
public void onError(Throwable e) {
}
@Override
public void onNext(SOAnswersResponse soAnswersResponse) {
mAdapter.updateAnswers(soAnswersResponse.getItems());
}
});
}
private void showErrorMessage() {
Toast.makeText(getApplicationContext(), "MainActivity: error loading from API", Toast.LENGTH_LONG).show();
}
我删除它的工作正常
mAdapter.updateAnswers(soAnswersResponse.getItems());
这是错误日志
12-25 07:34:49.535 17676-17676 / com.example.masoudmk.myapplication E / AndroidRuntime:FATAL EXCEPTION:main进程:com.example.masoudmk.myapplication,PID:17676 java.lang.NoSuchMethodError:无静态方法的getFont(Landroid /内容/上下文; ILandroid / util的/的TypedValue; ILandroid /插件/ TextView的)Landroid /图形/字体或符号;在课堂上Landroid / support / v4 / content / res / ResourcesCompat;或其超级类('android.support.v4.content.res.ResourcesCompat'的声明出现在/data/app/com.example.masoudmk.myapplication-1/split_lib_dependencies_apk.apk中)在android.support.v7.widget . 在Android.support.v7.widget.AppCompatTextHelper.loadFromAttributes(AppCompatTextHelper.java:110)的android.support.v7.widget.AppCompatTextHelper.updateTypefaceAndStyle(AppCompatTextHelper.java:208)上的TintTypedArray.getFont(TintTypedArray.java:119) .support.v7.widget.AppCompatTextHelperV17.loadFromAttributes(AppCompatTextHelperV17.java:38)位于android.support.v7.widget.AppCompatTextView . (AppCompatTextView.java:81)android.support.v7.widget.AppCompatTextView . (AppCompatTextView.java :71)位于android.support.v7.app的Android.support.v7.app.AppCompatViewInflater.createView(AppCompatViewInflater.java:103),位于android.support.v7.app的android.support.v7.app.AppCompatDelegateImplV9.createView(AppCompatDelegateImplV9.java:1024) . androi的AppCompatDelegateImplV9.onCreateView(AppCompatDelegateImplV9.java:1081)位于android.view.LayoutInflater的android.view.LayoutInflater.inflate(LayoutInflater.java:492)的android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:704)的d.view.LayoutInflater.createViewFromTag(LayoutInflater.java:746) .inflate(LayoutInflater.java:423)at com.example.masoudmk.myapplication.AnswersAdapter.onCreateViewHolder(AnswersAdapter.java:54)at com.example.masoudmk.myapplication.AnswersAdapter.onCreateViewHolder(AnswersAdapter.java:13)at android . support.v7.widget.RecyclerView $ Adapter.createViewHolder(RecyclerView.java:6519)at android.support.v7.widget.RecyclerView $ Recycler.tryGetViewHolderForPositionByDeadline(RecyclerView.java:5706)at android.support.v7.widget.RecyclerView $ Recycler.getViewForPosition(RecyclerView.java:5589)在android.support.v7.widget.RecyclerView $ Recycler.getViewForPosition(RecyclerView.java:5585)在android.support.v7.widget.LinearLayoutManager $ LayoutState.next(LinearLayoutManager.java: 2231)在android.support.v7.widget.LinearLayoutManager.lay android.support(LinearLayoutManager.java:1558)在Android.support的android.support.v7.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1518)android.support.v7.widget.LinearLayoutManager.onLayoutChildren(LinearLayoutManager.java:610) .v7.widget.RecyclerView.dispatchLayoutStep2(RecyclerView.java:3719)位于android.view.View.measure(View.java:18788)的android.support.v7.widget.RecyclerView.onMeasure(RecyclerView.java:3135) android.support.constraint.ConstraintLayout.internalMeasureChildren(ConstraintLayout.java:934)在android.view.vision.measure(View.java:18788)的android.support.constraint.ConstraintLayout.onMeasure(ConstraintLayout.java:973)在Android的android.swidget.FrameLayout.onMeasure(FrameLayout.java:194)的android.sn.Wotgins(ViewGroup.java:5951),android.support.v7.widget.ContentFrameLayout.onMeasure(ContentFrameLayout.java:139) . view.View.measure(View.java:18788)在android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5951)at和在android.view.View的android.widget.LinearLayout.onMeasure(LinearLayout.java:630)的android.widget.LinearLayout.measureVertical(LinearLayout.java:748)上的roid.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1465) .measure(View.java:18788)位于android.view.View.measure的Android.widget.FrameLayout.onMeasure(FrameLayout.java:194)上的android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5951)(查看 . java:18788)在android.widget.Linout.measureChildBeforeLayout(LinearLayout.java:1465)上的android.view.visionGroup.measureChildWithMargins(ViewGroup.java:5951)在android.widget.LinearLayout.measureVertical(LinearLayout.java:748)at android.widget.LinearLayout.onMeasure(LinearLayout中)
apply plugin: 'com.android.application'
android {
compileSdkVersion 26
buildToolsVersion '26.0.2'
defaultConfig {
applicationId "com.example.masoudmk.myapplication"
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'
}
}
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
exclude group: 'com.android.support', module: 'support-annotations'
})
//noinspection GradleCompatible
compile 'com.android.support:appcompat-v7:26.0.2'
compile 'com.android.support.constraint:constraint-layout:1.0.2'
compile 'com.android.support:support-v4:26.0.2'
//noinspection GradleCompatible
compile 'com.android.support:support-v13:26.0.2'
// Retrofit
compile 'com.squareup.retrofit2:retrofit:2.3.0'
compile 'com.squareup.okhttp:okhttp:2.4.0'
// JSON Parsing
compile 'com.google.code.gson:gson:2.8.0'
compile 'com.squareup.retrofit2:converter-gson:2.3.0'
enter code here
//noinspection GradleCompatible
compile 'com.android.support:recyclerview-v7:26.0.2'
testCompile 'junit:junit:4.12'
compile 'io.reactivex:rxjava:1.1.6'
compile 'io.reactivex:rxandroid:1.2.1'
compile 'com.squareup.retrofit2:adapter-rxjava:2.1.0'
}
什么问题是什么?
2 回答
以这种方式改变你的gradle:
和
我认为问题在于支持库版本 . 检查app.gradle文件中的构建工具版本和依赖项版本 . 它们必须相同 .
和