Question

如果您点击其打开该国家/地区活动的国家/地区并显示标题，视频和标记

，我正在使用RecyclerView来显示目前的国家/地区列表

而不是制作200多个活动，并在每个活动中放置标题，视频和旗帜。是否可以将一个活动与所有标题，视频和图像一起使用，并制作切换语句或其他内容，以便使用相同的布局文件在所有这些活动之间切换。

因此，如果用户点击国家/地区，则每次都会打开相同的活动，但只需切换并显示该国家/地区的正确标题，视频和图片。

主要活动

public class MainActivity extends ActionBarActivity {


@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    initControls();
}

private void initControls() {

    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);

    RecyclerView recyclerView = (RecyclerView) findViewById(R.id.my_recycler_view);

    if (toolbar != null) {
        setSupportActionBar(toolbar);
        getSupportActionBar().setTitle("Countries");

    }

    final String[] versions = {

            "Afghanistan",
            "Albania",

            .....
    };


    ArrayList<Properties> countries = new ArrayList<Properties>();

    for (String version : versions) {
        Properties feed = new Properties();

        feed.setTitle(version);
        countries.add(feed);
    }

    recyclerView.setHasFixedSize(true);

    recyclerView.setLayoutManager(new LinearLayoutManager(this));

    RecyclerView.Adapter mAdapter = new CardViewDataAdapter(countries);

    recyclerView.setAdapter(mAdapter);


}
}

适配器

public class CardViewDataAdapter extends RecyclerView.Adapter<CardViewDataAdapter.ViewHolder> {

private static ArrayList<Properties> dataSet;

public CardViewDataAdapter(ArrayList<Properties> countries) {

    dataSet = countries;
}


@Override
public CardViewDataAdapter.ViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
    View itemLayoutView = LayoutInflater.from(viewGroup.getContext()).inflate(
            R.layout.card_view, null);

    return new ViewHolder(itemLayoutView);
}

@Override
public void onBindViewHolder(CardViewDataAdapter.ViewHolder viewHolder, int i) {

    Properties fp = dataSet.get(i);

    viewHolder.countryName.setText(fp.getTitle());
    viewHolder.feed = fp;
}

@Override
public int getItemCount() {
    return dataSet.size();
}


public static class ViewHolder extends RecyclerView.ViewHolder {

    public TextView countryName;

    public Properties feed;
    private final Context context;

    public ViewHolder(View itemLayoutView) {
        super(itemLayoutView);
        context = itemView.getContext();

        countryName = (TextView) itemLayoutView
                .findViewById(R.id.cName);

        itemLayoutView.setOnClickListener(new View.OnClickListener() {


            @Override
            public void onClick(View v) {

                final Intent intent;
                switch (getAdapterPosition()){
                    case 0:
                        intent =  new Intent(context, Afghanistan.class);
                        break;

                    case 1:
                        intent =  new Intent(context, Albania.class);
                        break;


                    .......

                }
                context.startActivity(intent);
            }
        });


    }

}
}

国家/地区布局

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">

<TextView
    android:id="@+id/countryTitle"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:textAppearance="?android:attr/textAppearanceLarge"
    android:layout_marginTop="40dp"
    android:layout_marginBottom="40dp"
    android:layout_gravity="center_horizontal" />

<VideoView
    android:id="@+id/countryVideo"
    android:layout_width="300dp"
    android:layout_height="300dp"
    android:layout_marginBottom="40dp"
    android:layout_gravity="center_horizontal"/>

<ImageView
    android:id="@+id/countryFlag"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_gravity="center_horizontal" />


</LinearLayout>

阿富汗

public class Afganistan extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.country_activity);

    TextView countryTitle = (TextView)findViewById(R.id.countryTitle);
    countryTitle.setText("Afganistan");

    VideoView view = (VideoView)findViewById(R.id.countryVideo);
    String path = "android.resource://" + getPackageName() + "/" + R.raw.afganistanVideo;
    view.setVideoURI(Uri.parse(path));
    view.start();
    view.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
        @Override
        public void onPrepared(MediaPlayer mp) {
            mp.setLooping(true);
        }
    });

    ImageView countryFlag = (ImageView)findViewById(R.id.countryFlag);
    countryFlag.setImageResource(R.drawable.afganistanFlag);
}
}

Answer 1

您可以通过传递意图中的数据作为附加内容来实现使用下面的代码替换onClick（）方法中的代码，

        Intent countryIntent = new Intent(context, CountryActivity.class);
        countryIntent.putExtra("title", versions[getAdapterPosition()]);
        countryIntent.putExtra("url", /*set the url as specified above*/]);
        context.startActivity(countryIntent);

并在Afganistan Activity的onCreate（）方法中使用以下代码

        Intent countryIntent = getIntent();
        countryTitle.setText(countryIntent.getStringExtra("title"));
        String path = "android.resource://" + getPackageName() + "/" + countryIntent
                .getStringExtra("url");

如何使用不同文本和图像的相同布局

1 个答案: