ViewPagerはドットを追加し、ページをめくります.fragmentの使用
23159 ワード
ViewPagerは点を追加して、ページをめくって、タイトルを追加します
昨日と比べると、昨日と似ていて、
タイトルを追加するには、メソッドgetPageTitleを複写する必要があります.
3ページのレイアウトファイルはここにありません
Fragmentの使用
インプリメンテーションは、3番目のフラグメントの入力テキストを2番目のフラグメントに表示し、ActivityはFragmentActivityを継承する必要があります.また、パッケージのインポートをサポートし、support v 4パッケージを使用することに注意してください.
3つのfragmentのレイアウトファイルが与えられていません
昨日と比べると、昨日と似ていて、
public class MainActivity extends Activity {
private ViewPager viewpager;
private List views;
private LayoutInflater mInflater;
private LinearLayout mLinearLayout;
private List mPoint;
private PagerTabStrip mPagerTab;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
viewpager = (ViewPager) findViewById(R.id.viewpager);
mLinearLayout= (LinearLayout) findViewById(R.id.linearlayout_image);
mPagerTab = (PagerTabStrip) findViewById(R.id.pager_tab);
mPagerTab.setBackgroundColor(Color.GRAY);
mPagerTab.setTabIndicatorColor(Color.RED);
mPagerTab.setTextColor(Color.BLUE);
mPagerTab.setDrawFullUnderline(true);
views = new ArrayList<>();
mInflater = getLayoutInflater();
View view1 = mInflater.inflate(R.layout.viewpager_one, null);
View view2 = mInflater.inflate(R.layout.viewpager_two, null);
View view3 = mInflater.inflate(R.layout.viewpager_three, null);
View view4 = mInflater.inflate(R.layout.viewpager_one, null);
views.add(view1);
views.add(view2);
views.add(view3);
views.add(view4);
mPoint=new ArrayList<>();
for (int i = 0;i<4;i++){
ImageView iv1 = new ImageView(this);
iv1.setLayoutParams(new ViewGroup.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT));
iv1.setImageResource(R.mipmap.eii);
iv1.setPadding(20,20,20,20);
mPoint.add(iv1);
mLinearLayout.addView(iv1);
}
mPoint.get(0).setImageResource(R.mipmap.eia);
ViewPagerAdapter myPager=new ViewPagerAdapter(views);
viewpager.setAdapter(myPager);
viewpager.addOnPageChangeListener(new ViewPager.OnPageChangeListener() {
@Override
public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
}
@Override
public void onPageSelected(int position) {
for (ImageView iv : mPoint) {
iv.setImageResource(R.mipmap.eii);
}
mPoint.get(position % views.size()).setImageResource(R.mipmap.eia);
}
@Override
public void onPageScrollStateChanged(int state) {
}
});
viewpager.setCurrentItem(Integer.MAX_VALUE/2-Integer.MAX_VALUE/2%views.size());
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
タイトルを追加するには、メソッドgetPageTitleを複写する必要があります.
public class ViewPagerAdapter extends PagerAdapter {
private List views;
private String[] titles = {" 1"," 2"," 3"," 4"};
@Override
public CharSequence getPageTitle(int position) {
return titles[position%titles.length];
}
public ViewPagerAdapter(List views){
this.views = views;
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return Integer.MAX_VALUE;
}
@Override
public boolean isViewFromObject(View arg0, Object arg1) {
return arg0==arg1;
}
@Override
public void destroyItem(ViewGroup container, int position, Object object) {
// super.destroyItem(container, position, object);
// container.removeView(views.get(position));
}
@Override
public Object instantiateItem(ViewGroup container, int position) {
// TODO Auto-generated method stub
View view = views.get(position%views.size());
if (view.getParent()!=null){
container.removeView(view);
}
container.addView(view);
if(position==2){
Button btn = (Button) view.findViewById(R.id.pager_button);
btn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(v.getContext(), " ", Toast.LENGTH_LONG).show();
}
});
}
return view; //views.get(position%views.size());
}
}
3ページのレイアウトファイルはここにありません
"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="com.example.myviewpager.MainActivity" >
"@+id/viewpager"
android:layout_width="match_parent"
android:layout_height="match_parent">
"@+id/pager_tab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom">
"@+id/linearlayout_image"
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:gravity="center_horizontal"
android:layout_margin="40dp">
Fragmentの使用
インプリメンテーションは、3番目のフラグメントの入力テキストを2番目のフラグメントに表示し、ActivityはFragmentActivityを継承する必要があります.また、パッケージのインポートをサポートし、support v 4パッケージを使用することに注意してください.
public class MainActivity extends FragmentActivity implements View.OnClickListener{
private FrameLayout mFrameLayout;
private Button mButton1;
private Button mButton2;
private Button mButton3;
private MyFirstFragment myFirstFragment;
private MySecondFragment mySecondFragment;
private MyThirdFragment myThirdFragment;
private FragmentManager mFragmentmanager;
private FragmentTransaction transaction;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mFrameLayout = (FrameLayout) findViewById(R.id.framelayout);
mButton1 = (Button) findViewById(R.id.button1);
mButton2 = (Button) findViewById(R.id.button2);
mButton3 = (Button) findViewById(R.id.button3);
mButton1.setOnClickListener(this);
mButton2.setOnClickListener(this);
mButton3.setOnClickListener(this);
mFragmentmanager = getSupportFragmentManager();
myFirstFragment = new MyFirstFragment();
mySecondFragment = new MySecondFragment();
myThirdFragment = new MyThirdFragment();
transaction = mFragmentmanager.beginTransaction();
transaction.add(R.id.framelayout,myFirstFragment);
transaction.add(R.id.framelayout,mySecondFragment);
transaction.add(R.id.framelayout,myThirdFragment);
transaction.hide(myFirstFragment);
transaction.hide(mySecondFragment);
transaction.commit();
}
@Override
public void onClick(View view) {
switch (view.getId()){
case R.id.button1:
transaction = mFragmentmanager.beginTransaction();
transaction.hide(mySecondFragment);
transaction.hide(myThirdFragment);
transaction.show(myFirstFragment);
transaction.commit();
break;
case R.id.button2:
transaction = mFragmentmanager.beginTransaction();
String text = myThirdFragment.getText();
mySecondFragment.setText(text);
transaction.hide(myFirstFragment);
transaction.hide(myThirdFragment);
transaction.show(mySecondFragment);
transaction.commit();
break;
case R.id.button3:
transaction = mFragmentmanager.beginTransaction();
transaction.hide(myFirstFragment);
transaction.hide(mySecondFragment);
transaction.show(myThirdFragment);
transaction.commit();
break;
default:
break;
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
public class MyFirstFragment extends Fragment {
private Button mButtonTest;
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_test,null);
mButtonTest = (Button) view.findViewById(R.id.button);
mButtonTest.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Toast.makeText(getActivity()," ",Toast.LENGTH_SHORT).show();
}
});
return view;
}
}
public class MySecondFragment extends Fragment {
private Button mButtonTest;
private TextView mTextView;
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_sec,null);
mTextView = (TextView) view.findViewById(R.id.textview);
return view;
}
public void setText(String text){
mTextView.setText(text);
}
}
public class MyThirdFragment extends Fragment {
private Button mButtonTest;
private EditText mEditText;
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_third,null);
mEditText = (EditText) view.findViewById(R.id.edittext);
return view;
}
public String getText(){
String s = null;
if (mEditText!=null){
s=mEditText.getText().toString();
}
return s;
}
}
3つのfragmentのレイアウトファイルが与えられていません
"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">
"@+id/framelayout"
android:layout_width="match_parent"
android:layout_height="match_parent">
"match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:gravity="center">