自定义actionbar布局,实现布局复用

我们写的ActionBar的布局一般相似,只是里面的内容有所改变,当我们遇到多个相似的Actionbar时,可以使用自定义布局,然后在自定义布局中定义修改参数的方法即可

下面是一个简单的带有滑动actionbar以及fragment切换的例子：

1.自定义xml文件，即所要填充的布局，如下：

<?xml version="1.0" encoding="utf-8"?> 
<RelativeLayout 
xmlns:android="http://schemas.android.com/apk/res/android" 
android:id="@+id/custom_relative" 
android:layout_height="60dp" 
android:layout_width="match_parent" 
android:gravity="center_vertical" 
> 
<ImageView 
android:id="@+id/custom_iv" 
android:layout_height="40dp" 
android:layout_width="40dp" 
android:layout_marginLeft="10dp" 
android:layout_centerVertical="true" 
/> 
<TextView 
android:id="@+id/custom_title" 
android:layout_height="40dp" 
android:layout_width="100dp" 
android:layout_centerInParent="true" 
/> 
<ProgressBar 
android:id="@+id/custom_progress" 
android:layout_height="30dp" 
android:layout_width="30dp" 
android:layout_centerVertical="true" 
android:layout_toRightOf="@id/custom_title" 
/> 
<TextView 
android:id="@+id/custom_tv" 
android:layout_height="40dp" 
android:layout_width="40dp" 
android:layout_centerVertical="true" 
android:layout_alignParentRight="true" 
android:layout_marginRight="10dp" 
/> 
</RelativeLayout>

2.自定义类继承所要的布局

    在类中定义填充,修改的方法

    

public class Customview extends RelativeLayout{

private ImageView image;

private TextView text;

private TextView title;

private ProgressBar progress;

private RelativeLayout  relativeLayout;

public View view;

 public Customview(Context context) {

  super(context);

  inflate();

 }

 

   private void inflate() {

    LayoutInflater.from(getContext()).inflate( R.layout.customview,this,true);

    findId();

    initLayout();

    setTitle("111");

    setText("aaa");

    setImageDrawable(R.drawable.ic_launcher);

    setBackground();

  }

 private void initLayout()

 {

  setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT,LayoutParams.MATCH_PARENT));

 

 }

 private void findId()

 {

  relativeLayout=(RelativeLayout) findViewById(R.id.custom_relative);

  image=(ImageView) findViewById(R.id.custom_iv);

  text=(TextView) findViewById(R.id.custom_tv);

  title=(TextView) findViewById(R.id.custom_title);

  progress=(ProgressBar) findViewById(R.id.custom_progress);

 }

 

 private void setBackground()

 {

  relativeLayout.setBackgroundColor(Color.WHITE);

 }

 public void setTitle(String title_name)

 {

  title.setText(title_name);

  title.setGravity(Gravity.CENTER);

 }

 public void setText(String text_name)

 {

  text.setText(text_name);

  text.setGravity(Gravity.CENTER);

 }

 

 private void setImage(Bitmap map)

 {

  image.setImageBitmap(map);

 }

 

 public void setImageDrawable(int res)

 {

  image.setImageResource(res);

 }

}

3.在activity中在需要填充的布局中填充自定义的视图：

    可以通过自定义布局中的方法修改参数

public class MainActivity extends FragmentActivity implements OnPageChangeListener{

private ViewPager pager;

private HorizontalScrollView horizontalScrollView;

private LinearLayout linearLayout;

private List<Fragment> list;

private int textWidth;

private ActionBar actionBar;

private TextView indiacate;

private LinearLayout.LayoutParams indiacateLayoutParams;

 @Override

 protected void onCreate(Bundle savedInstanceState) {

  super.onCreate(savedInstanceState);

  setContentView(R.layout.activity_main);

  findId();

  initList();

  setListener();

  initTextModel();

  setTextModel(0);

  initActionBar();

 }

 

private void initActionBar()

{

 actionBar=getActionBar();

 actionBar.setDisplayShowCustomEnabled(true);

 Customview customView=new Customview(this);

 customView.setTitle("title");

 customView.setImageDrawable(R.drawable.collect);

 actionBar.setCustomView(customView);

 actionBar.setDisplayShowHomeEnabled(false);

 actionBar.show();

}

 

private  void initList()

{

 list=new ArrayList<Fragment>();

 for(int i=0;i<linearLayout.getChildCount();i++)

 {

  list.add(new MyFragment());

 

 }

}

 

private void findId()

{

 pager=(ViewPager) findViewById(R.id.main_viewpager);

 horizontalScrollView=(HorizontalScrollView) findViewById(R.id.main_horizontalScrollView);

 linearLayout=(LinearLayout) findViewById(R.id.main_linearLayout);

 indiacate=(TextView) findViewById(R.id.main_indiacate);

 indiacateLayoutParams=(android.widget.LinearLayout.LayoutParams) indiacate.getLayoutParams();

}

private void initTextModel()

{

 for(int i=0;i<linearLayout.getChildCount();i++)

 {

  TextView tv=(TextView) linearLayout.getChildAt(i);

  LayoutParams indicateParams = (LinearLayout.LayoutParams) tv

    .getLayoutParams();

  textWidth=indicateParams.width;

  Log.i("123","------>"+textWidth);

  tv.setTag(i);

  tv.setOnClickListener(new OnClickListener() {

   

   @Override

   public void onClick(View v) {

    // TODO Auto-generated method stub

    int position =Integer.parseInt(v.getTag().toString());

    pager.setCurrentItem(position);

    horizontalScrollView.scrollTo(textWidth*position, 0);

   }

  });

 }

}

private void setTextModel(int position)

{

 for(int i=0;i<linearLayout.getChildCount();i++)

 {

  TextView tv=(TextView) linearLayout.getChildAt(i);

  tv.setTextColor(Color.BLACK);

 }

 TextView tv2=(TextView) linearLayout.getChildAt(position);

 tv2.setTextColor(Color.RED);

 indiacateLayoutParams.setMargins(textWidth*position, 0, 0, 0);

}

private void setListener()

{

 MyAdapter adapter=new MyAdapter(getSupportFragmentManager());

 pager.setAdapter(adapter);

 pager.setOnPageChangeListener(this);

}

 @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;

 }

 

class MyAdapter extends FragmentPagerAdapter

{

 public MyAdapter(FragmentManager fm) {

  super(fm);

  // TODO Auto-generated constructor stub

 }

 @Override

 public Fragment getItem(int position) {

  // TODO Auto-generated method stub

  return list.get(position);

 

 }

 @Override

 public int getCount() {

  // TODO Auto-generated method stub

  return list.size();

 }

 

}

@Override

public void onPageScrollStateChanged(int arg0) {

 // TODO Auto-generated method stub

 

}

@Override

public void onPageScrolled(int position, float arg1, int offPix) {

 // TODO Auto-generated method stub

 horizontalScrollView.scrollTo(textWidth*position+offPix/2, 0);

 indiacateLayoutParams.setMargins(textWidth*position+offPix/2, 0, 0, 0);

 indiacate.setLayoutParams(indiacateLayoutParams);

}

@Override

public void onPageSelected(int position) {

 // TODO Auto-generated method stub

 setTextModel(position);

// horizontalScrollView.scrollTo(textWidth*position, 0);

}

 

 

}