抽取基類
//BaseActivity佈局,MainActivity不添加布局,讓MainActivity繼承BaseActivity
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.view.ViewPager
android:id="@+id/viewpager"
android:layout_width=“match_parent”
android:layout_height=“match_parent”
android:layout_weight=“1”
/>
<RadioButton android:id="@+id/radioButton1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_weight="1" android:button="@null" android:gravity="center" android:checked="true" android:drawableTop="@drawable/sel1" android:text="首頁" /> <RadioButton android:id="@+id/radioButton2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_weight="1" android:button="@null" android:gravity="center" android:drawableTop="@drawable/sel2" android:text="電影" /> <RadioButton android:id="@+id/radioButton3" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_weight="1" android:button="@null" android:gravity="center" android:drawableTop="@drawable/sel3" android:text="影院" /> <RadioButton android:id="@+id/radioButton4" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_weight="1" android:button="@null" android:gravity="center" android:drawableTop="@drawable/sel4" android:text="演出" /> <RadioButton android:id="@+id/radioButton5" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_weight="1" android:button="@null" android:gravity="center" android:drawableTop="@drawable/sel5" android:text="我的" /> </RadioGroup>
/////BaseActivity為抽象方法
import android.os.Bundle;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.RadioGroup;
public abstract class BaseActivity extends AppCompatActivity {
@Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_base); setLayoutId(R.layout.activity_base); //抽取初始化檢視 initTray(); //設定介面卡 initData(); } protected abstract int setLayoutId(int aa); protected abstract void initTray() ; protected abstract void initData();
}
///////MainActivity佈局為空,後期繼承BaseActivity
<?xml version="1.0" encoding="utf-8"?>//////繼承BaseActivity
import android.app.Fragment;
import android.support.v13.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.RadioGroup;
import com.bw.qgs.qgs20181022.fragment.FiveFragment;
import com.bw.qgs.qgs20181022.fragment.FourFragment;
import com.bw.qgs.qgs20181022.fragment.OneFragment;
import com.bw.qgs.qgs20181022.fragment.ThreeFragment;
import com.bw.qgs.qgs20181022.fragment.TwoFragment;
import java.util.ArrayList;
public class MainActivity extends BaseActivity {
private ViewPager pager;
private RadioGroup rg;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
@Override
protected int setLayoutId(int aa) {
return R.layout.activity_main;
}
protected void initTray() {
//找控制元件
pager = findViewById(R.id.viewpager);
rg = findViewById(R.id.rg);
}
protected void initData() {
final ArrayList<Fragment> list = new ArrayList<Fragment>();
list.add(new OneFragment());
list.add(new TwoFragment());
list.add(new ThreeFragment());
list.add(new FourFragment());
list.add(new FiveFragment());
pager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
@Override
public void onPageScrolled(int i, float v, int i1) {
}
@Override
public void onPageSelected(int i) {
//找到對應的id
rg.check(rg.getChildAt(i).getId());
}
@Override
public void onPageScrollStateChanged(int i) {
}
});
rg.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(RadioGroup group, int checkedId) {
//根據點選找到對應的下標
switch (checkedId){
case R.id.radioButton1:
pager.setCurrentItem(0);
break;
case R.id.radioButton2:
pager.setCurrentItem(1);
break;
case R.id.radioButton3:
pager.setCurrentItem(2);
break;
case R.id.radioButton4:
pager.setCurrentItem(3);
break;
case R.id.radioButton5:
pager.setCurrentItem(4);
break;
}
}
});
pager.setAdapter(new FragmentPagerAdapter(getFragmentManager()) {
@Override
public Fragment getItem(int i) {
return list.get(i);
}
@Override
public int getCount() {
return list.size();
}
});
}
}