java - setContentView を設定するには?

Question

私は actionbarsherlock "menuviewpager" を使用してプロジェクトを作成していますプロジェクトのクラスをその中に入れたいです。しかし、いくつかのエラーが発生しました。manueviewpager のプロジェクトのフラグメントに imageswitcher を挿入したいと考えています。

ここに私がすでにコピーしてプロジェクトに貼り付けたコードがあります.私が得た4つのエラーがあります:-

setContentView
findViewById を検索
Fragment1.this;
.padding_medium);

Fragment1.java

package com.androidbegin.menuviewpagertutorial;

import com.actionbarsherlock.app.SherlockFragment;


import android.content.Context;
import android.os.Bundle;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;




public class Fragment1 extends SherlockFragment {
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {

        View rootView = inflater.inflate(R.layout.fragment1, container, false);
        return rootView;

    }

    @Override
      public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.tandaamaran);//<---------here are the error "setContentView"

        ViewPager viewPager = (ViewPager) findViewById(R.id.view_pager);//<---------here are the error "findViewById"
        ImagePagerAdapter adapter = new ImagePagerAdapter();
        viewPager.setAdapter(adapter);
      }

    private class ImagePagerAdapter extends PagerAdapter
      {
        private int[] mImages = new int[] 
        {

            R.drawable.pic01,
            R.drawable.pic02,
            R.drawable.pic03,
            R.drawable.pic04,
            R.drawable.pic05,
            R.drawable.pic06,
            R.drawable.pic07,
            R.drawable.pic08,
            R.drawable.pic09,
            R.drawable.pic10,
            R.drawable.pic11,
            R.drawable.pic12,
            R.drawable.pic13,
            R.drawable.pic14,
            R.drawable.pic15,
            R.drawable.pic16,
            R.drawable.pic17,
            R.drawable.pic18,
            R.drawable.pic19,
            R.drawable.pic20,
            R.drawable.pic21,
            R.drawable.pic22,
            R.drawable.pic23,
            R.drawable.pic24,
            R.drawable.pic25,
            R.drawable.pic26,
            R.drawable.pic27,
            R.drawable.pic28,
            R.drawable.pic29,
            R.drawable.pic30,
            R.drawable.pic31,
            R.drawable.pic32,
            R.drawable.pic33,
            R.drawable.pic34,
            R.drawable.pic35,
            R.drawable.pic36,
            R.drawable.pic37,
            R.drawable.pic38,
            R.drawable.pic39,
            R.drawable.pic40,
            R.drawable.pic41,
            R.drawable.pic42,
            R.drawable.pic43,
            R.drawable.pic44,
            R.drawable.pic45,
            R.drawable.pic46,
            R.drawable.pic47,
            R.drawable.pic48,
            R.drawable.pic49,
            R.drawable.pic50,
            R.drawable.pic51,
            R.drawable.pic52,
            R.drawable.pic53,
            R.drawable.pic54,
            R.drawable.pic55,
            R.drawable.pic56,
            R.drawable.pic57,
            R.drawable.pic58,
            R.drawable.pic59,
            R.drawable.pic60,
            R.drawable.pic61,
            R.drawable.pic62,
            R.drawable.pic63,
            R.drawable.pic64,
            R.drawable.pic65,
            R.drawable.pic66

        };

        @Override
        public int getCount() 
        {
          return mImages.length;
        }

        @Override
        public boolean isViewFromObject(View view, Object object) 
        {
          return view == ((ImageView) object);
        }

        @Override
        public Object instantiateItem(ViewGroup container, int position) 
        {
          Context context = Fragment1.this;//<---------here are the error "Fragment1.this;"
          ImageView imageView = new ImageView(context);
          int padding = context.getResources().getDimensionPixelSize(
              R.dimen.padding_medium);//<---------here are the error ".padding_medium"
          imageView.setPadding(padding, padding, padding, padding);
          imageView.setScaleType(ImageView.ScaleType.CENTER_INSIDE);
          imageView.setImageResource(mImages[position]);
          ((ViewPager) container).addView(imageView, 0);
          return imageView;
        }

        @Override
        public void destroyItem(ViewGroup container, int position, Object object) 
        {
          ((ViewPager) container).removeView((ImageView) object);
        }
      }



}

MainActivity.java

    package com.androidbegin.menuviewpagertutorial;

import com.actionbarsherlock.app.SherlockFragmentActivity;
import com.actionbarsherlock.view.MenuItem;

import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.support.v4.app.Fragment;
import android.content.res.Configuration;
import android.os.Bundle;
import android.support.v4.app.ActionBarDrawerToggle;
import android.support.v4.widget.DrawerLayout;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ListView;
import android.support.v4.view.GravityCompat;

public class MainActivity extends SherlockFragmentActivity {

    // Declare Variables
    DrawerLayout mDrawerLayout;
    ListView mDrawerList;
    ActionBarDrawerToggle mDrawerToggle;
    MenuListAdapter mMenuAdapter;
    String[] title;
    String[] subtitle;
    int[] icon;
    Fragment fragment1 = new Fragment1();
    Fragment fragment2 = new Fragment2();
    private CharSequence mDrawerTitle;
    private CharSequence mTitle;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        // Get the view from drawer_main.xml
        setContentView(R.layout.drawer_main);

        // Get the Title
        mTitle = mDrawerTitle = getTitle();

        // Generate title
        title = new String[] { "Title Fragment 1", "Title Fragment 2" };

        // Generate subtitle
        subtitle = new String[] { "Subtitle Fragment 1", "Subtitle Fragment 2" };

        // Generate icon
        icon = new int[] { R.drawable.action_about, R.drawable.action_settings };

        // Locate DrawerLayout in drawer_main.xml
        mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);

        // Locate ListView in drawer_main.xml
        mDrawerList = (ListView) findViewById(R.id.listview_drawer);

        // Set a custom shadow that overlays the main content when the drawer
        // opens
        mDrawerLayout.setDrawerShadow(R.drawable.drawer_shadow,
                GravityCompat.START);

        // Pass string arrays to MenuListAdapter
        mMenuAdapter = new MenuListAdapter(MainActivity.this, title, subtitle,
                icon);

        // Set the MenuListAdapter to the ListView
        mDrawerList.setAdapter(mMenuAdapter);

        // Capture listview menu item click
        mDrawerList.setOnItemClickListener(new DrawerItemClickListener());

        // Enable ActionBar app icon to behave as action to toggle nav drawer
        getSupportActionBar().setHomeButtonEnabled(true);
        getSupportActionBar().setDisplayHomeAsUpEnabled(true);

        // ActionBarDrawerToggle ties together the the proper interactions
        // between the sliding drawer and the action bar app icon
        mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout,
                R.drawable.ic_drawer, R.string.drawer_open,
                R.string.drawer_close) {

            public void onDrawerClosed(View view) {
                // TODO Auto-generated method stub
                super.onDrawerClosed(view);
            }

            public void onDrawerOpened(View drawerView) {
                // TODO Auto-generated method stub
                // Set the title on the action when drawer open
                getSupportActionBar().setTitle(mDrawerTitle);
                super.onDrawerOpened(drawerView);
            }
        };

        mDrawerLayout.setDrawerListener(mDrawerToggle);

        if (savedInstanceState == null) {
            selectItem(0);
        }
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {

        if (item.getItemId() == android.R.id.home) {

            if (mDrawerLayout.isDrawerOpen(mDrawerList)) {
                mDrawerLayout.closeDrawer(mDrawerList);
            } else {
                mDrawerLayout.openDrawer(mDrawerList);
            }
        }

        return super.onOptionsItemSelected(item);
    }

    // ListView click listener in the navigation drawer
    private class DrawerItemClickListener implements
            ListView.OnItemClickListener {
        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position,
                long id) {
            selectItem(position);
        }
    }

    private void selectItem(int position) {

        FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
        // Locate Position
        switch (position) {
        case 0:
            ft.replace(R.id.content_frame, fragment1);
            break;
        case 1:
            ft.replace(R.id.content_frame, fragment2);
            break;
        }
        ft.commit();
        mDrawerList.setItemChecked(position, true);
        // Get the title followed by the position
        setTitle(title[position]);
        // Close drawer
        mDrawerLayout.closeDrawer(mDrawerList);
    }

    @Override
    protected void onPostCreate(Bundle savedInstanceState) {
        super.onPostCreate(savedInstanceState);
        // Sync the toggle state after onRestoreInstanceState has occurred.
        mDrawerToggle.syncState();
    }

    @Override
    public void onConfigurationChanged(Configuration newConfig) {
        super.onConfigurationChanged(newConfig);
        // Pass any configuration change to the drawer toggles
        mDrawerToggle.onConfigurationChanged(newConfig);
    }

    @Override
    public void setTitle(CharSequence title) {
        mTitle = title;
        getSupportActionBar().setTitle(mTitle);
    }

    @Override
    public void onBackPressed() {

        FragmentManager manager = getSupportFragmentManager();
        if (manager.getBackStackEntryCount() > 0) {
            // If there are back-stack entries, leave the FragmentActivity
            // implementation take care of them.
            manager.popBackStack();

        } else {
            // Otherwise, ask user if he wants to leave :)
            super.onBackPressed();
        }
    }
}

MenuListAdapter.java

    package com.androidbegin.menuviewpagertutorial;

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;

public class MenuListAdapter extends BaseAdapter {

    // Declare Variables
    Context context;
    String[] mTitle;
    String[] mSubTitle;
    int[] mIcon;
    LayoutInflater inflater;

    public MenuListAdapter(Context context, String[] title, String[] subtitle,
            int[] icon) {
        this.context = context;
        this.mTitle = title;
        this.mSubTitle = subtitle;
        this.mIcon = icon;
    }

    @Override
    public int getCount() {
        return mTitle.length;
    }

    @Override
    public Object getItem(int position) {
        return mTitle[position];
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    public View getView(int position, View convertView, ViewGroup parent) {
        // Declare Variables
        TextView txtTitle;
        TextView txtSubTitle;
        ImageView imgIcon;

        inflater = (LayoutInflater) context
                .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        View itemView = inflater.inflate(R.layout.drawer_list_item, parent,
                false);

        // Locate the TextViews in drawer_list_item.xml
        txtTitle = (TextView) itemView.findViewById(R.id.title);
        txtSubTitle = (TextView) itemView.findViewById(R.id.subtitle);

        // Locate the ImageView in drawer_list_item.xml
        imgIcon = (ImageView) itemView.findViewById(R.id.icon);

        // Set the results into TextViews
        txtTitle.setText(mTitle[position]);
        txtSubTitle.setText(mSubTitle[position]);

        // Set the results into ImageView
        imgIcon.setImageResource(mIcon[position]);

        return itemView;
    }

}

fragment1.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="fill_parent"
android:layout_height="fill_parent" 
android:orientation="vertical">

<Gallery

    android:id="@+id/gallery1"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content" />

<ImageSwitcher
    android:id="@+id/switcher1"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:layout_alignParentLeft="true"
    android:layout_alignParentRight="true"
    android:layout_alignParentBottom="true" />



<TextView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_centerHorizontal="true"
    android:layout_centerVertical="true"
    android:text="@string/Fragment1" />

<android.support.v4.view.ViewPager xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/view_pager"
android:layout_width="match_parent"
android:layout_height="match_parent" />

tandaamaran.xml

<android.support.v4.view.ViewPager xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/view_pager"
android:layout_width="match_parent"
android:layout_height="match_parent" />

AndroidManiefest.xml

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.androidbegin.menuviewpagertutorial"
android:versionCode="1"
android:versionName="1.0" >

<uses-sdk
    android:minSdkVersion="4"
    android:targetSdkVersion="15" />

<application
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/Theme.Sherlock" >
    <activity android:name=".MainActivity" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
</application>

score 0 · Accepted Answer

http://developer.android.com/reference/android/app/Activity.html#setContentView(android.view.View)

setContentViewアクティビティクラスのメソッドです。レイアウトが膨張したら、ビューを初期化できます。だからViewPager viewPager = (ViewPager) findViewById(R.id.view_pager)失敗します。

あなたが何をしているのか、どこからコードをコピーして貼り付けたのかわかりません。

おそらくアクティビティコンテキストが必要です

  Context context = Fragment1.this;

だから使うgetActivtiy()

  Context context = getActivity();

java - setContentView を設定するには?

2 に答える 2

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