Android Open Source - Geek-Coder-News Main Activity

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Back to project page Geek-Coder-News.

License

The source code is released under:

MIT License

Java Source Code

package com.geekcoder.activity;
/* w  ww.j  a v  a2s.c om*/
import java.util.ArrayList;

import android.graphics.BitmapFactory;
import android.graphics.Color;
import android.graphics.Matrix;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.view.ViewPager;
import android.support.v4.view.ViewPager.OnPageChangeListener;
import android.util.DisplayMetrics;
import android.view.Menu;
import android.view.View;
import android.view.animation.Animation;
import android.view.animation.TranslateAnimation;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;

import com.example.geekcoder.R;
import com.geekcoder.adapter.MyFragmentPagerAdapter;
import com.geekcoder.fragment.TestFragment;

public class MainActivity extends FragmentActivity {
  private ViewPager viewPager;
  private ArrayList<Fragment> fragmentList;
  private ImageView image;
  private TextView headline;
  private TextView hotpoint;
  private TextView entertainment;
  private TextView sport;
  private TextView technology;
  private int currIndex;//?????????
  private int bmpW;//?????????
  private int offset;//????????????

  
  
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    
    InitTextView();
    InitImage();
    InitViewPager();
  }
  
  
  /*
   * ??????????
   */
  public void InitTextView(){
    headline = (TextView)findViewById(R.id.headline);
    hotpoint = (TextView)findViewById(R.id.hotpoint);
    entertainment = (TextView)findViewById(R.id.entertainment);
    sport = (TextView)findViewById(R.id.sport);
    technology = (TextView)findViewById(R.id.technology);
    
    headline.setOnClickListener(new txListener(0));
    hotpoint.setOnClickListener(new txListener(1));
    entertainment.setOnClickListener(new txListener(2));
    sport.setOnClickListener(new txListener(3));
    technology.setOnClickListener(new txListener(4));
  }
  
  
  public class txListener implements View.OnClickListener{
    private int index=0;
    
    public txListener(int i) {
      index =i;
    }
    @Override
    public void onClick(View v) {
      // TODO Auto-generated method stub
      viewPager.setCurrentItem(index);
    }
  }
  
  
  /*
   * ????????????????
   */
  public void InitImage(){
    image = (ImageView)findViewById(R.id.cursor);
    bmpW = BitmapFactory.decodeResource(getResources(), R.drawable.cursor).getWidth();
    DisplayMetrics dm = new DisplayMetrics();
    getWindowManager().getDefaultDisplay().getMetrics(dm);
    int screenW = dm.widthPixels;
    offset = (screenW/5 - bmpW)/2;
    
    //imgageview?????????????????????????????offset??
    Matrix matrix = new Matrix();
    matrix.postTranslate(offset, 0);
    image.setImageMatrix(matrix);
  }
  
  /*
   * ?????ViewPager
   */
  public void InitViewPager(){
    viewPager = (ViewPager)findViewById(R.id.viewpager);
    fragmentList = new ArrayList<Fragment>();
    Fragment firstFragment = new TestFragment();
    Fragment secondFragment = new TestFragment();
    Fragment thirdFragment = new TestFragment();
    Fragment fourthFragment = new TestFragment();
    Fragment fifthFragment = new TestFragment();
    fragmentList.add(firstFragment);
    fragmentList.add(secondFragment);
    fragmentList.add(thirdFragment);
    fragmentList.add(fourthFragment);
    fragmentList.add(fifthFragment);
    
    //??ViewPager??????????
    viewPager.setAdapter(new MyFragmentPagerAdapter(getSupportFragmentManager(), fragmentList));
    viewPager.setCurrentItem(0);//?????????????????
    headline.setTextColor(Color.parseColor("#f65050"));
    hotpoint.setTextColor(Color.parseColor("#999999"));
    entertainment.setTextColor(Color.parseColor("#999999"));
    sport.setTextColor(Color.parseColor("#999999"));
    technology.setTextColor(Color.parseColor("#999999"));
    viewPager.setOnPageChangeListener(new MyOnPageChangeListener());//????????????
  }

  
  public class MyOnPageChangeListener implements OnPageChangeListener{
    private int one = offset *2 +bmpW;//?????????????????
    
    @Override
    public void onPageScrolled(int arg0, float arg1, int arg2) {
      // TODO Auto-generated method stub
      
    }
    
    @Override
    public void onPageScrollStateChanged(int arg0) {
      // TODO Auto-generated method stub
      
    }
    
    @Override
    public void onPageSelected(int arg0) {
      // TODO Auto-generated method stub
      Animation animation = new TranslateAnimation(currIndex*one,arg0*one,0,0);//??????
      currIndex = arg0;
      animation.setFillAfter(true);//?????????????????????????????????????
      animation.setDuration(200);//???????????0.2??
      image.startAnimation(animation);//????ImageView???????????
      int i = currIndex + 1;
      switch(currIndex){
        case 0:
          headline.setTextColor(Color.parseColor("#f65050"));
          hotpoint.setTextColor(Color.parseColor("#999999"));
          entertainment.setTextColor(Color.parseColor("#999999"));
          sport.setTextColor(Color.parseColor("#999999"));
          technology.setTextColor(Color.parseColor("#999999"));
          break;
        case 1:
          headline.setTextColor(Color.parseColor("#999999"));
          hotpoint.setTextColor(Color.parseColor("#f65050"));
          entertainment.setTextColor(Color.parseColor("#999999"));
          sport.setTextColor(Color.parseColor("#999999"));
          technology.setTextColor(Color.parseColor("#999999"));
          break;
        case 2:
          headline.setTextColor(Color.parseColor("#999999"));
          hotpoint.setTextColor(Color.parseColor("#999999"));
          entertainment.setTextColor(Color.parseColor("#f65050"));
          sport.setTextColor(Color.parseColor("#999999"));
          technology.setTextColor(Color.parseColor("#999999"));
          break;
        case 3:
          headline.setTextColor(Color.parseColor("#999999"));
          hotpoint.setTextColor(Color.parseColor("#999999"));
          entertainment.setTextColor(Color.parseColor("#999999"));
          sport.setTextColor(Color.parseColor("#f65050"));
          technology.setTextColor(Color.parseColor("#999999"));
          break;
        case 4:
          headline.setTextColor(Color.parseColor("#999999"));
          hotpoint.setTextColor(Color.parseColor("#999999"));
          entertainment.setTextColor(Color.parseColor("#999999"));
          sport.setTextColor(Color.parseColor("#999999"));
          technology.setTextColor(Color.parseColor("#f65050"));
          break;
      }
      Toast.makeText(MainActivity.this, "????????"+i+"?????", Toast.LENGTH_SHORT).show();
    }
  }
  
  
  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.main, menu);
    return true;
  }

}

Java Source Code List

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