希望有一个tablayout活动从家庭活动的选项菜单和我的tablayout调用,这是有一个片段,为不同的优惠,这是要提供的形式卡布局的帮助下,回收视图给用户,但没有得到预期的结果,因为得到一个错误,如this:-
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.cako, PID: 6202
java.lang.NoClassDefFoundError: Failed resolution of: Lcom/example/cako/PgrAdapter;
at com.example.cako.OfferActivity.onCreate(OfferActivity.java:38)
at android.app.Activity.performCreate(Activity.java:8000)
at android.app.Activity.performCreate(Activity.java:7984)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1309)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3422)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3601)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:85)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2066)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:223)
at android.app.ActivityThread.main(ActivityThread.java:7656)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:592)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:947)
Caused by: java.lang.ClassNotFoundException: Didn't find class "com.example.cako.PgrAdapter" on path: DexPathList[[zip file "/data/app/~~yjOBRW4J2sTIznph4kB9uA==/com.example.cako-638ACQ6zcRU7b9vz0JKplw==/base.apk"],nativeLibraryDirectories=[/data/app/~~yjOBRW4J2sTIznph4kB9uA==/com.example.cako-638ACQ6zcRU7b9vz0JKplw==/lib/x86, /system/lib, /system_ext/lib, /product/lib]]
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:207)
at java.lang.ClassLoader.loadClass(ClassLoader.java:379)
at java.lang.ClassLoader.loadClass(ClassLoader.java:312)
at com.example.cako.OfferActivity.onCreate(OfferActivity.java:38)
at android.app.Activity.performCreate(Activity.java:8000)
at android.app.Activity.performCreate(Activity.java:7984)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1309)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3422)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3601)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:85)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2066)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:223)
at android.app.ActivityThread.main(ActivityThread.java:7656)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:592)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:947)
I/Process: Sending signal. PID: 6202 SIG: 9
实用性是:-
package com.example.cako;
import androidx.annotation.NonNull;
import androidx.appcompat.app.ActionBar;
import androidx.appcompat.app.AppCompatActivity;
import androidx.appcompat.widget.Toolbar;
import androidx.fragment.app.Fragment;
import androidx.fragment.app.FragmentManager;
import androidx.fragment.app.FragmentPagerAdapter;
import androidx.fragment.app.FragmentStatePagerAdapter;
import androidx.viewpager.widget.PagerAdapter;
import androidx.viewpager.widget.ViewPager;
import android.os.Bundle;
import android.view.View;
import com.google.android.material.tabs.TabLayout;
public class OfferActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_offer);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbarForofferActivity);
setSupportActionBar(toolbar);
ActionBar ab = getSupportActionBar();
assert ab != null;
ab.setDisplayHomeAsUpEnabled(true);
TabLayout tab=(TabLayout)findViewById(R.id.tabLayoutInOffers);
tab.setSelectedTabIndicatorColor(getResources().getColor(R.color.colorAccent));
final ViewPager viewPager=(ViewPager)findViewById(R.id.viewPagerInOfferActivity);
PgrAdapter adapter=new PgrAdapter(getSupportFragmentManager(),tab.getTabCount());
viewPager.setAdapter(adapter);
viewPager.addOnPageChangeListener(new TabLayout.TabLayoutOnPageChangeListener(tab));
tab.addOnTabSelectedListener(new TabLayout.OnTabSelectedListener() {
@Override
public void onTabSelected(TabLayout.Tab tab) {
viewPager.setCurrentItem(tab.getPosition());
}
@Override
public void onTabUnselected(TabLayout.Tab tab) {
}
@Override
public void onTabReselected(TabLayout.Tab tab) {
}
});
}
}
class PgrAdapter extends FragmentStatePagerAdapter {
int count;
public PgrAdapter(@NonNull FragmentManager fm, int count) {
super(fm);
this.count = count;
}
@NonNull
@Override
public Fragment getItem(int position) {
switch (position) {
case 0:
return new CakoOffers();
case 1:
return new PaymentOffers();
default:
return null;
}
}
@Override
public int getCount() {
return count;
}
}
cako提供1标签的范围:-
package com.example.cako;
import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.fragment.app.Fragment;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
public class CakoOffers extends Fragment {
String[] offer;
@Nullable
@Override
public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.layout_for_fragment_cako_offers, container, false);
RecyclerView recyclerView = (RecyclerView) v.findViewById(R.id.recyclerViewForCakoOffers);
recyclerView.setAdapter(new RecyclerAdapterForCakeOffers(getContext(), offer));
recyclerView.setLayoutManager(new LinearLayoutManager(getContext(), LinearLayoutManager.VERTICAL, false));
return v;
}
@Override
public void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
offer = new String[]{"50%", "10%"};
}
}
class RecyclerAdapterForCakeOffers extends RecyclerView.Adapter<RecyclerAdapterForCakeOffers.Holder> {
Context co;
String[] discount;
public RecyclerAdapterForCakeOffers(Context context, String[] discount) {
co = context;
this.discount = discount;
}
@NonNull
@Override
public Holder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
View v = LayoutInflater.from(co).inflate(R.layout.layout_for_fragment_cako_offers, parent, false);
return new Holder(v);
}
@Override
public void onBindViewHolder(@NonNull Holder holder, int position) {
holder.discountText.setText(discount[position]);
// holder.button.setOnClickListener(new View.OnClickListener() {
// @Override
// public void onClick(View view) {
// Toast.makeText(co, "yes", Toast.LENGTH_SHORT).show();
// }
// });
}
@Override
public int getItemCount() {
return discount.length;
}
class Holder extends RecyclerView.ViewHolder {
Button button;
TextView discountText;
public Holder(@NonNull View itemView) {
super(itemView);
discountText = (TextView) itemView.findViewById(R.id.textViewForPercentageDiscountByCako);
button = (Button) itemView.findViewById(R.id.borderlessButtonInCakoOffers);
}
}
}
卡科碎片布局图offer:-
package com.example.cako;
import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.fragment.app.Fragment;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
public class CakoOffers extends Fragment {
String[] offer;
@Nullable
@Override
public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.layout_for_fragment_cako_offers, container, false);
RecyclerView recyclerView = (RecyclerView) v.findViewById(R.id.recyclerViewForCakoOffers);
recyclerView.setAdapter(new RecyclerAdapterForCakeOffers(getContext(), offer));
recyclerView.setLayoutManager(new LinearLayoutManager(getContext(), LinearLayoutManager.VERTICAL, false));
return v;
}
@Override
public void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
offer = new String[]{"50%", "10%"};
}
}
class RecyclerAdapterForCakeOffers extends RecyclerView.Adapter<RecyclerAdapterForCakeOffers.Holder> {
Context co;
String[] discount;
public RecyclerAdapterForCakeOffers(Context context, String[] discount) {
co = context;
this.discount = discount;
}
@NonNull
@Override
public Holder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
View v = LayoutInflater.from(co).inflate(R.layout.layout_for_fragment_cako_offers, parent, false);
return new Holder(v);
}
@Override
public void onBindViewHolder(@NonNull Holder holder, int position) {
holder.discountText.setText(discount[position]);
// holder.button.setOnClickListener(new View.OnClickListener() {
// @Override
// public void onClick(View view) {
// Toast.makeText(co, "yes", Toast.LENGTH_SHORT).show();
// }
// });
}
@Override
public int getItemCount() {
return discount.length;
}
class Holder extends RecyclerView.ViewHolder {
Button button;
TextView discountText;
public Holder(@NonNull View itemView) {
super(itemView);
discountText = (TextView) itemView.findViewById(R.id.textViewForPercentageDiscountByCako);
button = (Button) itemView.findViewById(R.id.borderlessButtonInCakoOffers);
}
}
}
回收器视图的卡片布局,以显示offers:-
<?xml version="1.0" encoding="utf-8"?>
<androidx.coordinatorlayout.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/constraint"
android:layout_width="match_parent"
android:background="#046180"
android:padding="1dp"
android:layout_height="wrap_content">
<androidx.cardview.widget.CardView
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:cardBackgroundColor="@android:color/white"
app:cardElevation="10dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<ImageView
android:id="@+id/textView4"
android:layout_width="40dp"
android:layout_height="40dp"
android:layout_marginStart="16dp"
android:layout_marginTop="16dp"
android:adjustViewBounds="true"
android:background="@drawable/left_curved_rect_for_coupons"
android:gravity="center_vertical"
android:scaleType="centerCrop"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:srcCompat="@drawable/ic_baseline_help_outline_24" />
<TextView
android:layout_width="wrap_content"
android:layout_height="40dp"
android:layout_marginTop="16dp"
android:background="@drawable/right_curved_rect_for_coupons"
android:gravity="center_vertical"
android:padding="10dp"
android:text="Cako Special"
android:textStyle="bold"
app:layout_constraintStart_toEndOf="@+id/textView4"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:id="@+id/textViewForPercentageDiscountByCako"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="16dp"
android:layout_marginTop="8dp"
android:text="50% Off"
android:textColor="#364702"
android:textSize="16sp"
android:textStyle="bold"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/textView4" />
<TextView
android:id="@+id/textViewForDynamicProductDetailInLoved"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="16dp"
android:layout_marginTop="2dp"
android:text="Get Flat 50% off on your first ever purchase of cake on our App. "
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/textViewForPercentageDiscountByCako" />
<Button
android:id="@+id/borderlessButtonInCakoOffers"
style="?android:attr/borderlessButtonStyle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentStart="true"
android:layout_alignParentEnd="true"
android:layout_marginStart="4dp"
android:text="MORE DETAILS"
android:textColor="#046180"
android:textSize="10sp"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/textViewForDynamicProductDetailInLoved" />
</androidx.constraintlayout.widget.ConstraintLayout>
</androidx.cardview.widget.CardView>
</androidx.coordinatorlayout.widget.CoordinatorLayout>
提供的活动。xml:-
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 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:id="@+id/constraint"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".OfferActivity">
<com.google.android.material.appbar.AppBarLayout
android:id="@+id/appBar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_constraintTop_toTopOf="@+id/constraint">
<androidx.appcompat.widget.Toolbar
android:id="@+id/toolbarForofferActivity"
android:layout_width="match_parent"
android:layout_height="?actionBarSize" />
<com.google.android.material.tabs.TabLayout
android:id="@+id/tabLayoutInOffers"
android:layout_width="409dp"
android:layout_height="wrap_content"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/appBar">
<com.google.android.material.tabs.TabItem
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:icon="@drawable/ic_discountcoupon"
android:text="Cako Offers" />
<com.google.android.material.tabs.TabItem
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:icon="@drawable/ic_discountpayment"
android:text="Coupons" />
</com.google.android.material.tabs.TabLayout>
<androidx.viewpager.widget.ViewPager
android:id="@+id/viewPagerInOfferActivity"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</com.google.android.material.appbar.AppBarLayout>
</androidx.constraintlayout.widget.ConstraintLayout>
建造。gradle:-
apply plugin: 'com.android.application'
android {
compileSdkVersion 30
buildToolsVersion "30.0.0"
defaultConfig {
applicationId "com.example.cako"
minSdkVersion 19
targetSdkVersion 30
versionCode 1
versionName "1.0"
testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
implementation 'de.hdodenhof:circleimageview:3.1.0'
android.defaultConfig.vectorDrawables.useSupportLibrary = true
implementation fileTree(dir: "libs", include: ["*.jar"])
implementation 'androidx.appcompat:appcompat:1.2.0'
implementation 'androidx.constraintlayout:constraintlayout:2.0.2'
implementation 'androidx.recyclerview:recyclerview:1.1.0'
implementation 'androidx.cardview:cardview:1.0.0'
implementation 'com.google.android.material:material:1.2.1'
testImplementation 'junit:junit:4.12'
implementation 'com.github.bumptech.glide:glide:4.11.0'
annotationProcessor 'com.github.bumptech.glide:compiler:4.11.0'
androidTestImplementation 'androidx.test.ext:junit:1.1.2'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
}
暂无答案!
目前还没有任何答案,快来回答吧!