如何链接到其他类

Question

我在一个类中有很多方法，哪些元素引用1个XML布局文件。如何将这些方法放在额外的类中？

所以我想把这段代码作为例子：

public void recordSound(){  
    // abgerunderter Rahmen für den Medienplayer wird in einer TextView
    // angezeigt
    TextView soundUmrandung = (TextView) findViewById(R.id.soundumrandungtextview);

    // das Design (abgerundeter Rahmen) für den Medienplayer laden
    Resources res = getApplicationContext().getResources();
    Drawable drawable = res.getDrawable(R.drawable.soundshape);

    // das geladene Design auf der TextView anwenden, damit ein abgerunter
    // Rahmen erscheint
    soundUmrandung.setBackground(drawable);


    ImageButton record = (ImageButton) findViewById(R.id.sound);
    ImageButton recordStop = (ImageButton) findViewById(R.id.soundstop);

和

public void builtButtonsRigtLeftPic() {

    ImageButton arrowLeft = (ImageButton) findViewById(R.id.arrowLeft);
    ImageButton arrowRight = (ImageButton) findViewById(R.id.arrowRight);
    arrowLeft.setVisibility(View.VISIBLE);
    arrowRight.setVisibility(View.VISIBLE);
    Resources res = getApplicationContext().getResources();
    Drawable leftgrey = res.getDrawable(R.drawable.arrowleftgrey);
    Drawable rightgrey = res.getDrawable(R.drawable.arrowrightgrey);

哪些元素将相同的layoutFile引用到不同的类中。

我用

尝试了

LayoutInflater layoutinflater = (LayoutInflater) this
            .getSystemService(LAYOUT_INFLATER_SERVICE);
    final View openprojectView = layoutinflater.inflate(R.layout.openproject, null);

设置LayoutResource并使用intent调用新类（如Intent soundRecord = new Intent(this, SoundRecord.class);startActivity(soundRecord);，但这导致错误：

07-20 21:19:00.590: E/AndroidRuntime(20296): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.unitnode/com.unitnode.SoundRecord}: android.view.InflateException: Binary XML file line #88: Error inflating class fragment

现在我在新课程中尝试过这种方式：

  

@覆盖       protected void onCreate（Bundle savedInstanceState）{

    super.onCreate(savedInstanceState);
    //setContentView(R.layout.openproject);
    LayoutInflater layoutinflater = (LayoutInflater) this
            .getSystemService(LAYOUT_INFLATER_SERVICE);
    openprojectView = layoutinflater.inflate(R.layout.openproject, null);
    //TextView sound = (TextView) openprojectView.findViewById(R.id.soundumrandungtextview);
    //Log.d("openprojectView", "openprojectView " + openprojectView + "sound " + sound);
    recordSound();

}

并参考布局：TextView soundUmrandung = (TextView) openprojectView.findViewById(R.id.soundumrandungtextview);。结果不再是错误，但它显示一个新的空白视图。当我关闭新的空白视图时，我看到除Buttons之外的所有内容都丢失了clickListener。所以我不能再录制音频了。

当我尝试用new SoundRecord(context)打开新类时，按钮也丢失了ClickListener。当我从Activity扩展类时，对我来说似乎是错误的，因为类不应该打开一个新的Activity。 Class应该只能访问父活动的元素。

现在我的班级：

  

公共类SoundRecord {

private SharedPreferences sharedPreferences;
private MediaRecorder mediaRecorder = null;
private File soundFile = null;
private String soundFilePath;
private View openprojectView;
//final Context context = this;

public SoundRecord(Context context){

    LayoutInflater layoutinflater = (LayoutInflater) context.getSystemService( Context.LAYOUT_INFLATER_SERVICE );
    //setContentView(R.layout.openproject);
    //LayoutInflater layoutinflater = (LayoutInflater) this.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    openprojectView = layoutinflater.inflate(R.layout.openproject, null);
    //TextView sound = (TextView) openprojectView.findViewById(R.id.soundumrandungtextview);
    //Log.d("openprojectView", "openprojectView " + openprojectView + "sound " + sound);
    recordSound(context);

}

在OpenProject中，该类由：new SoundRecord(context);

调用

请帮帮我。我真的需要将我的代码分成几类。