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package com.example.cmknowledgegraph;
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import android.os.Bundle;
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import com.example.cmknowledgegraph.MainContent;
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import com.example.cmknowledgegraph.R;
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import com.example.cmknowledgegraph.SearchContent;
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import com.google.android.material.bottomnavigation.BottomNavigationView;
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import com.hankcs.hanlp.HanLP;
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import androidx.appcompat.app.AppCompatActivity;
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import androidx.annotation.NonNull;
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import androidx.fragment.app.FragmentManager;
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import androidx.fragment.app.FragmentTransaction;
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import android.os.Bundle;
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import android.util.Log;
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import android.view.View;
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import android.widget.Button;
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import android.view.MenuItem;
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import android.widget.TextView;
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import com.example.PersonalCenter.Login;
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import com.example.PersonalCenter.Register;
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import java.util.List;
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public class MainActivity extends AppCompatActivity {
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private TextView mTextMessage;
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private FragmentTransaction transaction;
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private FragmentManager fragmentManager;
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private BottomNavigationView.OnNavigationItemSelectedListener mOnNavigationItemSelectedListener
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= new BottomNavigationView.OnNavigationItemSelectedListener() {
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@Override
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protected void onCreate(Bundle savedInstanceState) {
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@Override
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public boolean onNavigationItemSelected(MenuItem item) {
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fragmentManager = getSupportFragmentManager(); //使用fragmentmanager和transaction来实现切换效果
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transaction = fragmentManager.beginTransaction();
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switch (item.getItemId()) {
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case R.id.home:
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transaction.replace(R.id.content,new MainContent()); //对应的java class
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transaction.commit(); //一定不要忘记commit，否则不会显示
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return true;
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case R.id.search:
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transaction.replace(R.id.content,new SearchContent()); //对应的java class
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transaction.commit(); //一定不要忘记commit，否则不会显示
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return true;
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case R.id.chat:
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return true;
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case R.id.person:
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transaction.replace(R.id.content,new PersonContent()); //对应的java class
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transaction.commit(); //一定不要忘记commit，否则不会显示
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return true;
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}
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return false;
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}
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};
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// 设置默认进来是tab 显示的页面
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private void setDefaultFragment(){
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fragmentManager = getSupportFragmentManager();
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transaction = fragmentManager.beginTransaction();
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transaction.replace(R.id.content,new MainContent());
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transaction.commit();
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}
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@Override
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protected void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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setContentView(R.layout.activity_main);
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System.out.println("haha");
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setDefaultFragment(); //上面写的那个函数
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BottomNavigationView navView = findViewById(R.id.nav_view);
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mTextMessage = findViewById(R.id.message);
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navView.setOnNavigationItemSelectedListener(mOnNavigationItemSelectedListener);
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//HanLP测试
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String content = "发烧感冒";
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List<String> keywordList = HanLP.extractKeyword(content, 5);
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System.out.println(keywordList);
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}
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}
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}
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}
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