适配器和Listactivity

-1

我正在尝试开发适用于Android 5.0.1的应用程序。我被卡住了一个适配器。我无法让布局显示。我对Listview不太实际。我寻找解决方案，但我并不幸运。谢谢您的帮助。这里是我的代码：适配器和Listactivity

适配器类：

package esp1415.xyz; 

import java.util.List; 

import android.content.Context; 
import android.content.res.ColorStateList; 
import android.graphics.Color; 
import android.view.LayoutInflater; 
import android.view.View; 
import android.view.ViewGroup; 
import android.widget.BaseAdapter; 
import android.widget.CompoundButton; 
import android.widget.TextView; 
import android.widget.ToggleButton; 

public class ListaFarmaciAdapter extends BaseAdapter { 

    private Context contesto; 
    private List<DettagliFarmaco> lfarm; 

    public ListaFarmaciAdapter(Context context, List<DettagliFarmaco> list) { 
     contesto = context; 
     lfarm = list; 
    } 

    public void setFarmaci(List<DettagliFarmaco> list) { 
     lfarm = list; 
    } 
    @Override 
    public int getCount() { 
     if (lfarm != null) { 
      return lfarm.size(); 
     } 
     return 0; 
    } 

    @Override 
    public Object getItem(int position) { 
     if (lfarm != null) { 
      return lfarm.get(position); 
     } 
     return null; 
    } 

    @Override 
    public long getItemId(int position) { 
     if (lfarm != null) { 
      return lfarm.get(position).id; 
     } 
     return 0; 
    } 

    @Override 
    public View getView(int position, View view, ViewGroup parent) { 

     if (view == null) { 
      LayoutInflater inflater = (LayoutInflater) contesto.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
      view = inflater.inflate(R.layout.grafico, parent, false); 
     } 
     DettagliFarmaco mod = (DettagliFarmaco) getItem(position); 

     TextView txtNome = (TextView) view.findViewById(R.id.nome_farmaco); 
     txtNome.setText(mod.nome); 

     TextView txtDesc = (TextView) view.findViewById(R.id.desc_farmaco); 
     txtDesc.setText(mod.descrizione); 

     TextView txtQnt = (TextView) view.findViewById(R.id.qnt_farmaco); 
     txtQnt.setText(mod.quantità); 

     TextView txtInd = (TextView) view.findViewById(R.id.ind_farmaco); 
     txtInd.setText(mod.indice_associato); 

     TextView txtSveglia = (TextView) view.findViewById(R.id.sveglia); 
     txtSveglia.setText(String.format("%02d : %02d", mod.ore, mod.minuti)); 

     modificaColoreTesto((TextView) view.findViewById(R.id.l), mod.getRipGiorno(DettagliFarmaco.LUNEDÌ)); 
     modificaColoreTesto((TextView) view.findViewById(R.id.ma), mod.getRipGiorno(DettagliFarmaco.MARTEDÌ)); 
     modificaColoreTesto((TextView) view.findViewById(R.id.me), mod.getRipGiorno(DettagliFarmaco.MERCOLEDÌ)); 
     modificaColoreTesto((TextView) view.findViewById(R.id.g), mod.getRipGiorno(DettagliFarmaco.GIOVEDÌ)); 
     modificaColoreTesto((TextView) view.findViewById(R.id.v), mod.getRipGiorno(DettagliFarmaco.VENERDÌ)); 
     modificaColoreTesto((TextView) view.findViewById(R.id.s), mod.getRipGiorno(DettagliFarmaco.SABATO));   
     modificaColoreTesto((TextView) view.findViewById(R.id.d), mod.getRipGiorno(DettagliFarmaco.DOMENICA)); 

     ToggleButton tog = (ToggleButton) view.findViewById(R.id.tog); 
     tog.setChecked(mod.attiva); 
     tog.setTag(Long.valueOf(mod.id)); 
     tog.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() { 

     @Override 
     public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { 
      ((ListaFarmaciActivity) contesto).setSvegliaAttiva(((Long) buttonView.getTag()).longValue(), isChecked); 
     } 
    }); 

      view.setTag(Long.valueOf(mod.id)); 
      view.setOnClickListener(new View.OnClickListener() { 

     @Override 
     public void onClick(View view) { 
      ((ListaFarmaciActivity) contesto).startSveglia(((Long) view.getTag()).longValue()); 
     } 
    }); 

    view.setOnLongClickListener(new View.OnLongClickListener() { 

     @Override 
     public boolean onLongClick(View view) { 
      ((ListaFarmaciActivity) contesto).deleteSveglia(((Long) view.getTag()).longValue()); 
      return true; 
     } 
    }); 

    return view; 
} 

private void modificaColoreTesto(TextView v, boolean att) { 
    if (att) { 
     v.setTextColor(Color.CYAN); 
    } else { 
     v.setTextColor(Color.LTGRAY); 
    } 
} 
}

布局：

<?xml version="1.0" encoding="utf-8"?> 
<ListView xmlns:android="http://schemas.android.com/apk/res/android" 
android:id="@android:id/list" 
android:layout_width="match_parent" 
android:layout_height="match_parent" 
android:background="@drawable/bg10" /> 

     <TextView 
      android:id="@+id/nome_farmaco" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:layout_alignParentLeft="true" 
      android:layout_alignParentTop="true" 
      android:text="@string/nome" 
      android:textColor="#FAEBD7" 
      android:textAppearance="?android:attr/textAppearanceMedium" /> 

     <TextView 
      android:id="@+id/desc_farmaco" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:layout_below="@+id/nome_farmaco" 
      android:text="@string/desc" 
      android:textColor="#FAEBD7" 
      android:textAppearance="?android:attr/textAppearanceMedium" /> 

     <TextView 
      android:id="@+id/qnt_farmaco" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:layout_below="@+id/desc_farmaco" 
      android:textColor="#FAEBD7" 
      android:text="@string/qnt" 
      android:textAppearance="?android:attr/textAppearanceMedium" /> 

     <TextView 
      android:id="@+id/ind_farmaco" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:layout_below="@+id/qnt_farmaco" 
      android:textColor="#FAEBD7" 
      android:text="@string/ind" 
      android:textAppearance="?android:attr/textAppearanceMedium" /> 

     <TextView 
      android:id="@+id/sveglia" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:layout_below="@+id/ind_farmaco" 
      android:layout_marginLeft="25dp" 
      android:layout_marginRight="8dp" 
      android:textColor="#FAEBD7" 
      android:text="@string/tem" 
      android:textAppearance="?android:attr/textAppearanceLarge" /> 

     <TextView 
      android:id="@+id/l" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:layout_below="@+id/sveglia" 
      android:text="@string/l" 
      android:layout_marginLeft="10dp" 
      android:textColor="#FAEBD7" 
      android:textAppearance="?android:attr/textAppearanceSmall" /> 

     <TextView 
      android:id="@+id/ma" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:layout_toRightOf="@+id/l" 
      android:layout_below="@+id/sveglia" 
      android:layout_marginLeft="4dp" 
      android:text="@string/m" 
      android:textColor="#FAEBD7" 
      android:textAppearance="?android:attr/textAppearanceSmall" /> 

     <TextView 
      android:id="@+id/me" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:layout_toRightOf="@+id/ma" 
      android:layout_below="@+id/sveglia" 
      android:layout_marginLeft="4dp" 
      android:text="@string/m" 
      android:textColor="#FAEBD7" 
      android:textAppearance="?android:attr/textAppearanceSmall" /> 

     <TextView 
      android:id="@+id/g" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:layout_toRightOf="@+id/me" 
      android:layout_below="@+id/sveglia" 
      android:layout_marginLeft="4dp" 
      android:text="@string/g" 
      android:textColor="#FAEBD7" 
      android:textAppearance="?android:attr/textAppearanceSmall" /> 

     <TextView 
      android:id="@+id/v" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:layout_toRightOf="@+id/g" 
      android:layout_below="@+id/sveglia" 
      android:layout_marginLeft="4dp" 
      android:text="@string/v" 
      android:textColor="#FAEBD7" 
      android:textAppearance="?android:attr/textAppearanceSmall" /> 

     <TextView 
      android:id="@+id/s" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:layout_toRightOf="@+id/v" 
      android:layout_below="@+id/sveglia" 
      android:layout_marginLeft="4dp" 
      android:text="@string/s" 
      android:textColor="#FAEBD7" 
      android:textAppearance="?android:attr/textAppearanceSmall" /> 

     <TextView 
      android:id="@+id/d" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:layout_toRightOf="@+id/s" 
      android:layout_below="@+id/sveglia" 
      android:layout_marginLeft="4dp" 
      android:text="@string/d" 
      android:textColor="#FAEBD7" 
      android:textAppearance="?android:attr/textAppearanceSmall" /> 

     <TextView 
      android:id="@+id/data_ins" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:layout_below="@+id/l" 
      android:text="@string/data" 
      android:textColor="#FAEBD7" 
      android:textAppearance="?android:attr/textAppearanceSmall" /> 

     <TextView 
      android:id="@+id/ora_ins" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:layout_below="@+id/data_ins" 
      android:text="@string/ora" 
      android:textColor="#FAEBD7" 
      android:textAppearance="?android:attr/textAppearanceSmall" /> 

     <TextView 
      android:id="@+id/data" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:layout_toRightOf="@+id/data_ins" 
      android:layout_below="@+id/g" 
      android:layout_marginLeft="4dp" 
      android:textColor="#FAEBD7" 
      android:textAppearance="?android:attr/textAppearanceSmall" /> 

     <TextView 
      android:id="@+id/ora" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:layout_toRightOf="@+id/ora_ins" 
      android:layout_below="@+id/data" 
      android:layout_marginLeft="4dp" 
      android:textColor="#FAEBD7" 
      android:textAppearance="?android:attr/textAppearanceSmall" /> 

     <ToggleButton 
      android:id="@+id/tog" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:layout_alignParentRight="true" 
      android:layout_alignTop="@+id/sveglia" /> 

</ListView>

和活动，如果有帮助：

package esp1415.xyz; 

import android.app.AlertDialog; 
import android.app.ListActivity; 
import android.content.Context; 
import android.content.DialogInterface; 
import android.content.Intent; 
import android.os.Bundle; 
import android.view.Menu; 
import android.view.MenuItem; 

public class ListaFarmaciActivity extends ListActivity { 

    private ListaFarmaciAdapter adap; 
    private DBHelper dbHelper = new DBHelper(this); 
    private Context contesto; 

@Override 
    protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    contesto = this;  
    setContentView(R.layout.grafico); 

    adap = new ListaFarmaciAdapter(this, dbHelper.getFarmaci()); 

    setListAdapter(adap); 
    } 

    @Override 
    public boolean onCreateOptionsMenu(Menu menu) { 
    getMenuInflater().inflate(R.menu.listafarmaci, menu); 
    return true; 
} 

@Override 
public boolean onOptionsItemSelected(MenuItem item) { 

    switch (item.getItemId()) { 
     case R.id.agg: { 
      startSveglia(-1); 
      break; 
     } 
    } 

    return super.onOptionsItemSelected(item); 
} 

@Override 
protected void onActivityResult(int requestCode, int resultCode, Intent data) { 
    super.onActivityResult(requestCode, resultCode, data); 

    if (resultCode == RESULT_OK) { 
     adap.setFarmaci(dbHelper.getFarmaci()); 
     adap.notifyDataSetChanged(); 
    } 
} 

public void setSvegliaAttiva(long id, boolean att) { 
    ManagerSveglia.deleteSveglia(this); 

    DettagliFarmaco mod = dbHelper.getFarmaco(id); 
    mod.attiva = att; 
    dbHelper.updateFarmaco(mod); 

    ManagerSveglia.setSveglia(this); 
} 

public void startSveglia(long id) { 
    Intent intent = new Intent(this, Sveglia.class); 
    intent.putExtra("id", id); 
    startActivityForResult(intent, 0); 
} 

public void deleteSveglia(long id) { 
    final long SvegliaId = id; 
    AlertDialog.Builder builder = new AlertDialog.Builder(this); 
    builder.setMessage("Sei Sicuro?") 
    .setTitle("Vuoi eliminare il farmaco selezionato?") 
    .setCancelable(true) 
    .setNegativeButton("No", null) 
    .setPositiveButton("Ok", new DialogInterface.OnClickListener() { 
     @Override 
     public void onClick(DialogInterface dialog, int which) { 
      ManagerSveglia.deleteSveglia(contesto); 
      dbHelper.deleteFarmaco(SvegliaId); 
      adap.setFarmaci(dbHelper.getFarmaci()); 
      adap.notifyDataSetChanged(); 
      ManagerSveglia.setSveglia(contesto); 
     } 
    }).show(); 
} 

}

最后我logcat的：

01-22 10:40:49.961: E/AndroidRuntime(30751): FATAL EXCEPTION: main 
01-22 10:40:49.961: E/AndroidRuntime(30751): Process: esp1415.xyz, PID: 30751 
01-22 10:40:49.961: E/AndroidRuntime(30751): java.lang.RuntimeException: Unable to start activity ComponentInfo{esp1415.xyz/esp1415.xyz.ListaFarmaciActivity}: java.lang.UnsupportedOperationException: addView(View, LayoutParams) is not supported in AdapterView 
01-22 10:40:49.961: E/AndroidRuntime(30751): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3149) 
01-22 10:40:49.961: E/AndroidRuntime(30751): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3248) 
01-22 10:40:49.961: E/AndroidRuntime(30751): at android.app.ActivityThread.access$1000(ActivityThread.java:197) 
01-22 10:40:49.961: E/AndroidRuntime(30751): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1681) 
01-22 10:40:49.961: E/AndroidRuntime(30751): at android.os.Handler.dispatchMessage(Handler.java:102) 
01-22 10:40:49.961: E/AndroidRuntime(30751): at android.os.Looper.loop(Looper.java:145) 
01-22 10:40:49.961: E/AndroidRuntime(30751): at android.app.ActivityThread.main(ActivityThread.java:6872) 
01-22 10:40:49.961: E/AndroidRuntime(30751): at java.lang.reflect.Method.invoke(Native Method) 
01-22 10:40:49.961: E/AndroidRuntime(30751): at java.lang.reflect.Method.invoke(Method.java:372) 
01-22 10:40:49.961: E/AndroidRuntime(30751): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1404) 
01-22 10:40:49.961: E/AndroidRuntime(30751): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1199) 
01-22 10:40:49.961: E/AndroidRuntime(30751): Caused by: java.lang.UnsupportedOperationException: addView(View, LayoutParams) is not supported in AdapterView 
01-22 10:40:49.961: E/AndroidRuntime(30751): at android.widget.AdapterView.addView(AdapterView.java:711) 
01-22 10:40:49.961: E/AndroidRuntime(30751): at android.view.LayoutInflater.rInflate(LayoutInflater.java:822) 
01-22 10:40:49.961: E/AndroidRuntime(30751): at android.view.LayoutInflater.inflate(LayoutInflater.java:511) 
01-22 10:40:49.961: E/AndroidRuntime(30751): at android.view.LayoutInflater.inflate(LayoutInflater.java:415) 
01-22 10:40:49.961: E/AndroidRuntime(30751): at android.view.LayoutInflater.inflate(LayoutInflater.java:366) 
01-22 10:40:49.961: E/AndroidRuntime(30751): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:450) 
01-22 10:40:49.961: E/AndroidRuntime(30751): at android.app.Activity.setContentView(Activity.java:2358) 
01-22 10:40:49.961: E/AndroidRuntime(30751): at esp1415.xyz.ListaFarmaciActivity.onCreate(ListaFarmaciActivity.java:22) 
01-22 10:40:49.961: E/AndroidRuntime(30751): at android.app.Activity.performCreate(Activity.java:6550) 
01-22 10:40:49.961: E/AndroidRuntime(30751): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1120) 
01-22 10:40:49.961: E/AndroidRuntime(30751): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3102) 
01-22 10:40:49.961: E/AndroidRuntime(30751): ... 10 more

来源

2016-01-22 Velika

ü可以尝试改变视图= inflater.inflate（R.layout.grafico，父母，假）;查看= inflater.inflate（R.layout.grafico，null）;并尝试在getView（） – Raghavendra

10月1日至22日：40：49.961：E/AndroidRuntime（30751）： java.lang.UnsupportedOperationException：致addView（查看，的LayoutParams）不适配器视图
支持

不要

view = inflater.inflate(R.layout.grafico, parent, false);

做

view = inflater.from(context).inflate(R.layout.grafico, null);

你应该试试这个

LayoutInflater inflater=(LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
    view = null; 
    if(view == null) 
    { 

    view = inflater.from(context).inflate(R.layout.community_common_list_layout, null); 
    }

来源

2016-01-22 10:48:33

谢谢你的答案，但它不起作用。我的问题在于我的列表不会膨胀。我查了一切，寻找教程和问题，我的代码似乎是正确的。但是我的清单仍然是空的。 – Velika

@Velika好吧，'列表仍然是空的'意味着没有价值这就是为什么有问题 –

适配器和Listactivity

回答

相关问题