Question

我正在尝试添加我对我的适配器所做的自定义视图。我正在尝试通过commonsware添加视图以合并适配器。

https://github.com/commonsguy/cwac-merge

这是我试图夸大布局的代码：

    LayoutInflater inflater = getLayoutInflater();
    LinearLayout row = (LinearLayout) inflater.inflate(R.layout.row,
            null);


        TextView headerOne = (TextView) row
                .findViewById(R.id.titleTextView);
        TextView headerTwo = (TextView) row
                .findViewById(R.id.titleTextView);
        headerOne.setText("One");
        headerTwo.setText("Two");

        mergeAdapter.addView(headerOne);
        mergeAdapter.addAdapter(myArrayAdapter);

        mergeAdapter.addView(headerTwo);
        mergeAdapter.addAdapter(myOtherArrayAdapter);

这是我的xml。

<LinearLayout
    android:layout_width="0dp"
    android:layout_height="wrap_content"
    android:layout_margin="16dp"
    android:layout_weight="1"
    android:orientation="vertical" >

    <TextView
        android:id="@+id/titleTextView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:fontFamily="sans-serif-condensed"
        android:text="message text"
        android:textAppearance="?android:attr/textAppearanceMedium"
        android:textColor="@color/text_gray"
        android:textStyle="bold" />

    <View
        android:layout_width="fill_parent"
        android:layout_height="1dip"
        android:background="#000000" />
</LinearLayout>

更新：忘了谈谈我的“问题”。首先，我之前从未夸大布局，所以我不确定它是如何工作的/什么是正确的膨胀方式。其次，我收到了这个错误：

01-20 23:18:46.427: E/AndroidRuntime(24810): java.lang.ClassCastException: android.widget.LinearLayout$LayoutParams cannot be cast to android.widget.AbsListView$LayoutParams

编辑：

我的进口商品：

import android.content.Context;
import android.content.SharedPreferences;
import android.database.Cursor;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v4.app.NavUtils;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.TextView;

import com.actionbarsherlock.app.SherlockListActivity;
import com.actionbarsherlock.view.Menu;
import com.actionbarsherlock.view.MenuItem;
import com.commonsware.cwac.merge.MergeAdapter;
import com.google.gson.JsonObject;
import com.koushikdutta.async.future.FutureCallback;
import com.koushikdutta.ion.Ion;

import com.eghdk.myapp.R;
import com.eghdk.myapp.util.AppUtil;
import com.eghdk.myapp.util.DatabaseHelper;

public class MyActivity extends SherlockListActivity {

Answer 1

使用两个布局资源，而不是一个。不要给布局充气，然后尝试拍摄那些布局并单独使用它们。

或者，换句话说，传递给addView()的值必须是：

来自inflate()或

直接

使用构造函数在Java中创建的内容

Answer 2

更改以下内容

 LinearLayout row = (LinearLayout) inflater.inflate(R.layout.row,
        null);

到

 View row = inflater.inflate(R.layout.row,
        null);

Answer 3

我认为您没有将view添加到parent

试

yourParent.addView(row);

yourParent是您需要附加此row

的布局

Answer 4

试试这个......

    LayoutInflater inflater = getLayoutInflater();

    LinearLayout row = (LinearLayout) inflater.inflate(R.layout.row, null);
    TextView headerOne = (TextView) row.findViewById(R.id.titleTextView);
    headerOne.setText("One");
    ViewParent parent = row.getParent();
    if(parent != null && parent instanceof ViewGroup) {
        ((ViewGroup)parent).removeView(row);
    }
    AbsListView.LayoutParams layoutParams = new AbsListView.LayoutParams(AbsListView.LayoutParams.MATCH_PARENT, AbsListView.LayoutParams.WRAP_CONTENT);
    row.setLayoutParams(layoutParams);

    mergeAdapter.addView(row);
    mergeAdapter.addAdapter(myArrayAdapter);

    row = (LinearLayout) inflater.inflate(R.layout.row, null);
    TextView headerTwo = (TextView) row.findViewById(R.id.titleTextView);
    headerTwo.setText("Two");
    parent = row.getParent();
    if(parent != null && parent instanceof ViewGroup) {
        ((ViewGroup)parent).removeView(row);
    }
    layoutParams = new AbsListView.LayoutParams(AbsListView.LayoutParams.MATCH_PARENT, AbsListView.LayoutParams.WRAP_CONTENT);
    row.setLayoutParams(layoutParams);

    mergeAdapter.addView(row);
    mergeAdapter.addAdapter(myOtherArrayAdapter);

Answer 5

尝试删除以下行。

LinearLayout row = (LinearLayout) inflater.inflate(R.layout.row, null);

而是放下以下代码。

View row = inflater.inflate(R.layout.row, null);

Answer 6

请在扩展android http://www.doubleencore.com/2013/05/layout-inflation-as-intended/

中的布局时遵循良好做法

http://www.piwai.info/android-adapter-good-practices/

试图在Activity中使布局膨胀不起作用

6 个答案: