所以我正在尝试构建和Android应用程序，它从用户输入中获取代码并将其放入listview的自定义布局中。
这是我对列表中每个元素的布局的xml（以下称为game_row.xml）
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<TextView
android:id="@+id/dateout"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:text="Medium Text"
android:textAppearance="?android:attr/textAppearanceMedium" />
<TextView
android:id="@+id/team1out"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="@+id/dateout"
android:text="Large Text"
android:textAppearance="?android:attr/textAppearanceLarge" />
<TextView
android:id="@+id/team2out"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="@+id/team1out"
android:text="Large Text"
android:textAppearance="?android:attr/textAppearanceLarge" />
<TextView
android:id="@+id/score1out"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="@+id/team2out"
android:layout_alignParentRight="true"
android:text="Medium Text"
android:textAppearance="?android:attr/textAppearanceMedium" />
<TextView
android:id="@+id/score2out"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBottom="@+id/team2out"
android:layout_alignParentRight="true"
android:text="Medium Text"
android:textAppearance="?android:attr/textAppearanceMedium" />
<View
android:layout_width="fill_parent"
android:layout_below="@+id/team2out"
android:layout_height="1dp"
android:background="@android:color/white"/>
</RelativeLayout>
这是我班级的java代码：
public class KeepScoreHomeScreen extends Activity {
ArrayList<Game> Game_data = new ArrayList<Game>();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.home_screen);
if (savedInstanceState != null) {
System.out.println("this shouldnt happen");
ArrayList<Game> inp = (ArrayList<Game>) savedInstanceState.get("games");
System.out.println("game made");
Game_data.addAll(inp);
}
// System.out.println("helo");
// Game_data.add(new Game(1,2,3,4,3, "t","T"));
GameAdapter adapter = new GameAdapter(this, R.layout.game_row, Game_data);
// This is used to update the maximum number of days in a month
Bundle extras = getIntent().getExtras();
ListView gameList = (ListView) findViewById(R.id.main_list_view);
gameList.setAdapter(adapter);
}
@Override
public void onSaveInstanceState(Bundle savedInstanceState) {
super.onSaveInstanceState(savedInstanceState);
savedInstanceState.putParcelableArrayList("games", Game_data);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.activity_home_menu, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle item selection
switch (item.getItemId()) {
case R.id.action_newEntry:
toNewEntry(this.findViewById(R.layout.home_screen));
break;
case R.id.action_help:
buildHelp(this.findViewById(R.layout.home_screen));
break;
case R.id.action_settings:
buildSettings(this.findViewById(R.layout.home_screen));
default:
return super.onOptionsItemSelected(item);
}
return false;
}
public void toNewEntry(View view) {
Intent intent = new Intent(this, KeepScoreActivity.class);
startActivityForResult(intent, 1);
}
protected void onActivityResult(int r, int j, Intent intent) {
// System.out.println("hedslo");
Bundle bundle = intent.getBundleExtra("myfirstintent");
int sc1 = bundle.getInt("score1");
int sc2 = bundle.getInt("score2");
int ye = bundle.getInt("year");
int mo = bundle.getInt("month");
int da = bundle.getInt("day");
String te1 = bundle.getString("team1");
String te2 = bundle.getString("team2");
Game g = new Game(sc1, sc2, ye, mo, da, te1, te2);
Game_data.add(g);
GameAdapter adapter = new GameAdapter(this, R.layout.game_row, Game_data);
ListView gameList = (ListView) findViewById(R.id.main_list_view);
gameList.setAdapter(adapter);
}
public void buildHelp(View view) {
/***
* this code to build an alert dialog was taken from
* http://stackoverflow
* .com/questions/2795300/how-to-implement-a-custom-alertdialog-view
*
* I used this code because it allowed me to insert a simple xml file as
* my alertdialog
*
*/
LayoutInflater inflater = getLayoutInflater();
View dialoglayout = inflater.inflate(R.layout.help_layout, (ViewGroup) getCurrentFocus());
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setView(dialoglayout);
builder.show();
}
public void buildSettings(View view) {
LayoutInflater inflater = getLayoutInflater();
View dialoglayout = inflater.inflate(R.layout.settings_layout, (ViewGroup) getCurrentFocus());
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setView(dialoglayout);
builder.show();
}
}
我遇到的问题是，每次我设法创建game_row输出然后尝试给设置栏充气我都会遇到错误
05-10 14:27:56.153: E/AndroidRuntime(1569): FATAL EXCEPTION: main
05-10 14:27:56.153: E/AndroidRuntime(1569): java.lang.UnsupportedOperationException: addView(View, LayoutParams) is not supported in AdapterView
05-10 14:27:56.153: E/AndroidRuntime(1569): at android.widget.AdapterView.addView(AdapterView.java:477)
05-10 14:27:56.153: E/AndroidRuntime(1569): at android.view.LayoutInflater.inflate(LayoutInflater.java:497)
05-10 14:27:56.153: E/AndroidRuntime(1569): at android.view.LayoutInflater.inflate(LayoutInflater.java:396)
05-10 14:27:56.153: E/AndroidRuntime(1569): at android.view.LayoutInflater.inflate(LayoutInflater.java:352)
05-10 14:27:56.153: E/AndroidRuntime(1569): at edu.ucsb.cs.cs185.hw4skeleton.KeepScoreHomeScreen.buildSettings(KeepScoreHomeScreen.java:145)
05-10 14:27:56.153: E/AndroidRuntime(1569): at edu.ucsb.cs.cs185.hw4skeleton.KeepScoreHomeScreen.onOptionsItemSelected(KeepScoreHomeScreen.java:91)
05-10 14:27:56.153: E/AndroidRuntime(1569): at android.app.Activity.onMenuItemSelected(Activity.java:2534)
05-10 14:27:56.153: E/AndroidRuntime(1569): at com.android.internal.policy.impl.PhoneWindow.onMenuItemSelected(PhoneWindow.java:958)
05-10 14:27:56.153: E/AndroidRuntime(1569): at com.android.internal.view.menu.MenuBuilder.dispatchMenuItemSelected(MenuBuilder.java:735)
05-10 14:27:56.153: E/AndroidRuntime(1569): at com.android.internal.view.menu.MenuItemImpl.invoke(MenuItemImpl.java:149)
05-10 14:27:56.153: E/AndroidRuntime(1569): at com.android.internal.view.menu.MenuBuilder.performItemAction(MenuBuilder.java:874)
05-10 14:27:56.153: E/AndroidRuntime(1569): at com.android.internal.view.menu.ActionMenuView.invokeItem(ActionMenuView.java:514)
05-10 14:27:56.153: E/AndroidRuntime(1569): at com.android.internal.view.menu.ActionMenuItemView.onClick(ActionMenuItemView.java:99)
05-10 14:27:56.153: E/AndroidRuntime(1569): at android.view.View.performClick(View.java:4084)
05-10 14:27:56.153: E/AndroidRuntime(1569): at android.view.View$PerformClick.run(View.java:16966)
05-10 14:27:56.153: E/AndroidRuntime(1569): at android.os.Handler.handleCallback(Handler.java:615)
05-10 14:27:56.153: E/AndroidRuntime(1569): at android.os.Handler.dispatchMessage(Handler.java:92)
05-10 14:27:56.153: E/AndroidRuntime(1569): at android.os.Looper.loop(Looper.java:137)
05-10 14:27:56.153: E/AndroidRuntime(1569): at android.app.ActivityThread.main(ActivityThread.java:4745)
05-10 14:27:56.153: E/AndroidRuntime(1569): at java.lang.reflect.Method.invokeNative(Native Method)
05-10 14:27:56.153: E/AndroidRuntime(1569): at java.lang.reflect.Method.invoke(Method.java:511)
05-10 14:27:56.153: E/AndroidRuntime(1569): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
05-10 14:27:56.153: E/AndroidRuntime(1569): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
任何人都可以帮我弄清楚如何让我的观点与彼此很好地合作？
答案 0 :(得分：1)
您未正确使用LayoutInflater。在以下代码块中......
View dialoglayout = inflater.inflate(R.layout.settings_layout, (ViewGroup) getCurrentFocus());
...... inflater试图做两件事：
您不希望发生第二件事，因为您将视图关闭到AlertDialog，而不是将其附加到“当前焦点”（显然是崩溃日志中的ListView）。您也不希望第一件事发生，因为“当前焦点”不会是这个膨胀视图的父级，因此使用它来计算LayoutParams也是没有意义的。
通常，您应始终将要附加的直接父视图作为inflate()的第二个参数传递，然后如果您不想使用第三个参数当时附上两个。但是，在此示例中，您无法访问实际的父视图（位于正在构建的AlertDialog中），并且它将覆盖任何LayoutParams，因此您应该修改代码以在通过膨胀时不传递父代：< / p>
View dialoglayout = inflater.inflate(R.layout.settings_layout, null);
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setView(dialoglayout);
侧面注意：
同样，这仅适用于这种特殊情况。在几乎每个其他情况下，您应该使用inflate()，如下所示：
inflater.inflate(R.layout.settings_layout, parent, false);
传递膨胀布局的真实父视图的位置。