Question

在我的应用程序中，我正在使用neokree的materialtabs库。我希望我的应用程序支持多种语言，所以我希望Tab标题支持翻译。但是，我不能让它工作！ ViewPagerAdapter.java有这个方法“Charsequence getPageTitle（int position）” 所以我做了一个开关（位置）。但现在，例如：

case 0:
    return R.string.title1;

不起作用，因为R.string.title1返回int。但我不能使用getString或getResources，因为它是一个帮助类。我不能使用上下文，因为它是“类不能扩展多个类”。任何解决方案？

这是我的代码：

ViewPagerAdapter.java：

    package jdev.voicerecorder;

import android.app.Activity;
import android.app.Application;
import android.bluetooth.BluetoothClass;
import android.content.Context;
import android.os.Build;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentStatePagerAdapter;
import android.util.Log;

import java.util.Locale;

 class ViewPagerAdapter extends FragmentStatePagerAdapter{
    public Context c;
    public ViewPagerAdapter(FragmentManager fm){
        super(fm);
    }







    public Fragment getItem(int num){

        Log.d("tag", "num " + num);
        switch (num){
            case 0:
                return new Record();
            case 1:
                return new ShowList();
        }
        return null;
    }

    @Override
    public int getCount(){
        return 2;
    }

    @Override
    public CharSequence getPageTitle(int position){



        switch (position){
            case 0:
                return R.string.title1;
            case 1:
                return R.string.title2;
        }
        return null;
    }
}

My Mainactivity.java（我称之为RecordingActivity.java）：

    package jdev.voicerecorder;

import android.os.Environment;
import android.support.v4.view.ViewPager;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.support.v7.widget.Toolbar;
import android.view.Menu;
import android.view.MenuItem;

import java.io.File;

import it.neokree.materialtabs.MaterialTab;
import it.neokree.materialtabs.MaterialTabHost;
import it.neokree.materialtabs.MaterialTabListener;


public class RecordingActivity extends ActionBarActivity implements MaterialTabListener{

    private Toolbar toolbar;

    MaterialTabHost tabHost;
    ViewPager pager;
    ViewPagerAdapter pagerAdapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_recording);
        toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);

        File folder=new File(Environment.getExternalStorageDirectory()
                +File.separator
                +"/Recordings");
        boolean success=true;
        if (!folder.exists()){
            success=folder.mkdir();
        }
        if (success){

        }else {

        }


        tabHost = (MaterialTabHost) this.findViewById(R.id.tabHost);
        pager = (ViewPager) this.findViewById(R.id.pager);
        pagerAdapter = new ViewPagerAdapter(getSupportFragmentManager());
        pager.setAdapter(pagerAdapter);



        pager.setOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() {
            @Override
            public void onPageSelected(int position) {
                tabHost.setSelectedNavigationItem(position);
            }
        });

        for (int i = 0; i < pagerAdapter.getCount(); i++) {
            tabHost.addTab(
                    tabHost.newTab()
                            .setText(pagerAdapter.getPageTitle(i))
                            .setTabListener(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.menu_recording, 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();



        return super.onOptionsItemSelected(item);
    }

    @Override
    public void onTabSelected(MaterialTab materialTab) {
        pager.setCurrentItem(materialTab.getPosition());

    }

    @Override
    public void onTabReselected(MaterialTab materialTab) {

    }

    @Override
    public void onTabUnselected(MaterialTab materialTab) {

    }
}

和strings.xml：

   <resources>
    <string name="app_name">Recorder</string>

    <string name="hello_world">Hello world!</string>
    <string name="action_settings">Settings</string>

<!-- TODO: Remove or change this placeholder text -->
    <string name="hello_blank_fragment">Hello blank fragment</string>
    <string name="recordTab">Record</string>
    <string name="recordsTab">All records</string>
    <string name="allrecordsTab">ALL RECORDS</string>
    <string name="editexttitle">Filename</string>
    <string name="savingpath">"Recording saved</string>
    <string name="exText">Recording</string>
    <string name="buttonSave">Save</string>
    <string name="buttonRecord">Record</string>
    <string name="Recording">Recording</string>
    <string name="deleted">File removed</string>
    <string name="title1">Record</string>
    <string name="title2">All Files</string>
    <string name="bla">Bla</string>
</resources>

错误日志是

    Error:(51, 32) error: incompatible types
required: CharSequence
found:    int

Answer 1

使用getResources（）。getString（...）

而不是ID

例如：

return getResources().getString(R.string.title1);

Answer 2

在你的＆＃34; ViewPagerAdapter.java中试试这个：＆＃34;：

class ViewPagerAdapter extends FragmentStatePagerAdapter{
public Context c;
public ViewPagerAdapter(FragmentManager fm, Context context){
    super(fm);
    c = context; /////
}

public Fragment getItem(int num){

    Log.d("tag", "num " + num);
    switch (num){
        case 0:
            return new Record();
        case 1:
            return new ShowList();
    }
    return null;
}

@Override
public int getCount(){
    return 2;
}

@Override
public CharSequence getPageTitle(int position){

    String settitle1 = c.getResources().getString(R.string.title1);
    String settitle2 = c.getResources().getString(R.string.title2);


    String tabtitles[] = new String[] { settitle1, settitle2 };

    return tabtitles[position];
}

}

并在您的RecordingActivity中替换为：

pagerAdapter = new ViewPagerAdapter(getSupportFragmentManager());

通过

pagerAdapter.setAdapter(new ViewPagerAdapter(getSupportFragmentManager(),getApplicationContext()));

ViewPagerAdapter标签标题翻译Android库neokree / materialtabs

2 个答案: