A flexible view for providing a limited window into a large data set.

ไฟล์ที่เกี่ยวข้อง
- build.gradle (Module: app)
- activity_main.xml
- MainActivity.java
- values/colors.xml
- drawable/item_state.xml
- layout/custom_layout.xml
- CustomItem.java
- CustomHolder.java
- CustomAdapter.java
build.gradle (Module: app)
apply plugin: 'com.android.application' android { compileSdkVersion 29 buildToolsVersion "29.0.0" defaultConfig { applicationId "com.phaisarn.myapplication" minSdkVersion 21 targetSdkVersion 29 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 fileTree(dir: 'libs', include: ['*.jar']) implementation 'androidx.appcompat:appcompat:1.0.2' implementation 'androidx.constraintlayout:constraintlayout:1.1.3' testImplementation 'junit:junit:4.12' androidTestImplementation 'androidx.test:runner:1.2.0' androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0' implementation 'androidx.recyclerview:recyclerview:1.0.0' }
activity_main.xml
<?xml version="1.0" encoding="utf-8"?> <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" tools:context=".MainActivity"> <androidx.recyclerview.widget.RecyclerView android:id="@+id/recyclerView" android:layout_width="match_parent" android:layout_height="match_parent" /> </androidx.constraintlayout.widget.ConstraintLayout>
MainActivity.java
package com.phaisarn.myapplication; import androidx.appcompat.app.AppCompatActivity; import androidx.recyclerview.widget.LinearLayoutManager; import androidx.recyclerview.widget.RecyclerView; import android.os.Bundle; import android.view.View; import android.widget.Toast; import java.util.ArrayList; public class MainActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); final ArrayList<CustomItem> items = new ArrayList<>(); items.add(new CustomItem(R.drawable.ic_1, "Seiri", "สะสาง")); items.add(new CustomItem(R.drawable.ic_2, "Seiton", "สะดวก")); items.add(new CustomItem(R.drawable.ic_3, "Seiso", "สะอาด")); items.add(new CustomItem(R.drawable.ic_4, "Seiketsu", "สุขลักษณะ")); items.add(new CustomItem(R.drawable.ic_5, "Shitsuke", "สร้างนิสัย")); CustomAdapter adapter = new CustomAdapter(this, items); RecyclerView rcv = findViewById(R.id.recyclerView); rcv.setAdapter(adapter); rcv.setLayoutManager(new LinearLayoutManager(this)); adapter.setOnClickListener(new CustomAdapter.OnItemClickListener() { @Override public void onItemClick(View item, int position) { String str = items.get(position).textJp; Toast.makeText(getBaseContext(), str, Toast.LENGTH_SHORT).show(); } }); } }
colors.xml
<?xml version="1.0" encoding="utf-8"?> <resources> <color name="colorPrimary">#008577</color> <color name="colorPrimaryDark">#00574B</color> <color name="colorAccent">#D81B60</color> <color name="item_active">#ffffc5</color> <color name="item_normal">#ffffff</color> </resources>
item_state.xml
<?xml version="1.0" encoding="utf-8"?> <selector xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="wrap_content" android:layout_height="wrap_content" android:exitFadeDuration="500"> <item android:drawable="@color/item_active" android:state_pressed="true" /> <item android:drawable="@color/item_normal" /> </selector>
custom_layout.xml
<GridLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginBottom="3dp" android:background="@drawable/item_state" android:orientation="horizontal" android:padding="5dp"> <ImageView android:id="@+id/imageView" android:layout_gravity="center_vertical" android:src="@drawable/ic_1" /> <TextView android:id="@+id/textView_jp" android:layout_columnWeight="1" android:layout_gravity="center_vertical" android:layout_marginLeft="10dp" android:text="Seiri" android:textColor="#007" android:textSize="20sp" /> <TextView android:id="@+id/textView_th" android:layout_gravity="center_vertical" android:layout_marginRight="10dp" android:text="สะสาง" android:textColor="#aaa" android:textSize="18sp" /> </GridLayout>
CustomItem.java
package com.phaisarn.myapplication; public class CustomItem { public int imgId; public String textJp; public String textTh; public CustomItem(int imgId, String textJp, String textTh) { this.imgId = imgId; this.textJp = textJp; this.textTh = textTh; } }
CustomHolder.java
package com.phaisarn.myapplication; import android.view.View; import android.widget.ImageView; import android.widget.TextView; import androidx.recyclerview.widget.RecyclerView; public class CustomHolder extends RecyclerView.ViewHolder { public ImageView imageView; public TextView textViewJp; public TextView textViewTh; public CustomHolder(View convertView) { super(convertView); imageView = convertView.findViewById(R.id.imageView); textViewJp = convertView.findViewById(R.id.textView_jp); textViewTh = convertView.findViewById(R.id.textView_th); } }
CustomAdapter.java
package com.phaisarn.myapplication; import android.content.Context; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import androidx.recyclerview.widget.RecyclerView; import java.util.List; public class CustomAdapter extends RecyclerView.Adapter<CustomHolder> { private Context mContext; private List<CustomItem> mItems; public CustomAdapter(Context context, List<CustomItem> items) { //กำหนดเป็น ArrayList เหมือนเดิมก็ได้ mContext = context; mItems = items; } public interface OnItemClickListener { void onItemClick(View item, int position); } private OnItemClickListener mListener; public void setOnClickListener(OnItemClickListener listener) { mListener = listener; } @Override public int getItemCount() { return mItems.size(); } @Override public CustomHolder onCreateViewHolder(ViewGroup parent, int viewType) { LayoutInflater inflater = LayoutInflater.from(mContext); final View view = inflater.inflate(R.layout.custom_layout, parent, false); final CustomHolder vHolder = new CustomHolder(view); /* view.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { int pos = vHolder.getAdapterPosition(); String str = vHolder.textViewJp.getText().toString(); str += " : " + vHolder.textViewTh.getText().toString(); if(pos != RecyclerView.NO_POSITION) { Toast.makeText(mContext, str, Toast.LENGTH_SHORT).show(); } } }); */ view.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { if (mListener != null) { int pos = vHolder.getAdapterPosition(); if (pos != RecyclerView.NO_POSITION) { mListener.onItemClick(view, pos); } } } }); return vHolder; } @Override public void onBindViewHolder(CustomHolder vHolder, int position) { CustomItem item = mItems.get(position); vHolder.imageView.setImageResource(item.imgId); vHolder.textViewJp.setText(item.textJp); vHolder.textViewTh.setText(item.textTh); } }
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