Question

这是我的主要活动

public class MainActivity extends AppCompatActivity {


//private static Button buttonPst;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.content_main);
    findViewById(R.id.button4).setOnClickListener(new View.OnClickListener() {
                                                      public void onClick(View v) {
                                                          Intent I = new Intent();
                                                          I.setAction("android.amila.action.PST");
                                                          startActivity(I);

                                                      }
                                                  }
    );


}

}

Custom_row

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

<TextView
    android:text="@string/textview"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:id="@+id/rowTitle"
    android:layout_weight="1"
    android:textSize="18sp"
    android:typeface="normal" />

<TextView
    android:text="@string/textview1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:id="@+id/rowSubtitle"
    android:layout_weight="1"
    android:textSize="18sp" />

这是xml文件

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/content_pst"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"


tools:context="com.example.amila.newglossary.pst"
>

<ListView
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_alignParentRight="true"
    android:layout_alignParentEnd="true"
    android:layout_marginRight="10dp"
    android:layout_marginEnd="10dp"
    android:id="@+id/pstList" />

.java文件

public class pst extends Activity {

String[] englishName = new String[]{"bacon", "Ham", "Tuna", "Candy", "Meatball", "Potato"};
String[] sinhalaName = new String[]{"wdddbhha", "wdddbhha", "wdddbhha", "wdddbhha", "wa", "wa"};
// Button button;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.content_pst);
    ListView listView = (ListView) findViewById(R.id.pstList);
    adapter ada= new adapter(this,englishName,sinhalaName);



    listView.setAdapter(ada);
}

}

这是适配器类

public class adapter extends ArrayAdapter<String> {
String[] englishName;
String[] sinhalaName;
Context c;
LayoutInflater inflater;
public adapter(Context context, String[] englishName,String[] sinhalaName) {
    super(context, R.layout.custom_row,englishName);
this.c=context;
    this.englishName=englishName;
    this.sinhalaName=sinhalaName;
}
public class ViewHolder{
TextView englishTv;
TextView sinhalaTv;
}

@Override
public View getView(int position, View convertView, ViewGroup parent) {
    if (convertView == null) {
        inflater = (LayoutInflater) 
c.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        convertView = inflater.inflate(R.layout.custom_row, null);
    }
final ViewHolder holder=new ViewHolder();
    holder.englishTv=(TextView)convertView.findViewById(R.id.rowTitle);
    holder.sinhalaTv=(TextView)convertView.findViewById(R.id.rowSubtitle);

    holder.englishTv.setText(englishName[position]);
    holder.sinhalaTv.setText(sinhalaName[position]);
    return super.getView(position, convertView, parent);
}
}

我已经尝试了这么多，第一个窗口（主要活动）在按下PST时没有错误地运行，没有出现列表视图的窗口。此错误出现在RUN中并关闭应用程序

E / AndroidRuntime：致命异常：主要过程：com.example.amila.newglossary，PID：6309 java.lang.RuntimeException：无法启动活动ComponentInfo {com.example.amila.newglossary / com.example.amila.newglossary.pst}： java.lang.RuntimeException：您的内容必须具有其id为的ListView 属性是'android.R.id.list' 在android.app.ActivityThread.performLaunchActivity（ActivityThread.java:2646）在android.app.ActivityThread.handleLaunchActivity（ActivityThread.java:2707）在android.app.ActivityThread.-wrap12（ActivityThread.java）在android.app.ActivityThread $ H.handleMessage（ActivityThread.java:1460）在android.os.Handler.dispatchMessage（Handler.java:102）在android.os.Looper.loop（Looper.java:154）在android.app.ActivityThread.main（ActivityThread.java:6077） at java.lang.reflect.Method.invoke（Native Method）在com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run（ZygoteInit.java:865）在com.android.internal.os.ZygoteInit.main（ZygoteInit.java:755）引起：java.lang.RuntimeException：您的内容必须具有一个ListView，其id属性为'android.R.id.list' 在android.app.ListActivity.onContentChanged（ListActivity.java:243）在com.android.internal.policy.PhoneWindow.setContentView（PhoneWindow.java:419）在android.app.Activity.setContentView（Activity.java:2414）在com.example.amila.newglossary.pst.onCreate（pst.java:42）在android.app.Activity.performCreate（Activity.java:6664）在android.app.Instrumentation.callActivityOnCreate（Instrumentation.java:1118）在android.app.ActivityThread.performLaunchActivity（ActivityThread.java:2599）在android.app.ActivityThread.handleLaunchActivity（ActivityThread.java:2707）在android.app.ActivityThread.-wrap12（ActivityThread.java）在android.app.ActivityThread $ H.handleMessage（ActivityThread.java:1460）在android.os.Handler.dispatchMessage（Handler.java:102）在android.os.Looper.loop（Looper.java:154）在android.app.ActivityThread.main（ActivityThread.java:6077） at java.lang.reflect.Method.invoke（Native Method）在com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run（ZygoteInit.java:865）在com.android.internal.os.ZygoteInit.main（ZygoteInit.java:755）

Answer 1

在适配器中返回您自定义的视图而不是返回超级

@Override
public View getView(int position, View convertView, ViewGroup parent) {
   ViewHolder holder = new ViewHolder();
    if (convertView == null) {
        inflater = (LayoutInflater) 
                   c.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        convertView = inflater.inflate(R.layout.custom_row, null);
        holder.englishTv=(TextView)convertView.findViewById(R.id.rowTitle);
        holder.sinhalaTv=(TextView)convertView.findViewById(R.id.rowSubtitle);
        convertView.setTag(holder);
    }else{
        holder = (ViewHolder) convertView.getTag();
    }
    holder.englishTv.setText(englishName[position]);
    holder.sinhalaTv.setText(sinhalaName[position]);
    return convertView;
}

我想在android.why中创建一个包含两列的列表视图，因为它不起作用

1 个答案: