每次在模拟器中启动时,我的应用都会崩溃。这是logcat:
01-02 17:20:58.859: ERROR/AndroidRuntime(249): Uncaught handler: thread main exiting due to uncaught exception
01-02 17:20:58.889: ERROR/AndroidRuntime(249): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.shoppinglist/com.shoppinglist.ShoppingList}: java.lang.UnsupportedOperationException: addView(View, LayoutParams) is not supported in AdapterView
01-02 17:20:58.889: ERROR/AndroidRuntime(249): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2401)
01-02 17:20:58.889: ERROR/AndroidRuntime(249): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2417)
01-02 17:20:58.889: ERROR/AndroidRuntime(249): at android.app.ActivityThread.access$2100(ActivityThread.java:116)
01-02 17:20:58.889: ERROR/AndroidRuntime(249): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1794)
01-02 17:20:58.889: ERROR/AndroidRuntime(249): at android.os.Handler.dispatchMessage(Handler.java:99)
01-02 17:20:58.889: ERROR/AndroidRuntime(249): at android.os.Looper.loop(Looper.java:123)
01-02 17:20:58.889: ERROR/AndroidRuntime(249): at android.app.ActivityThread.main(ActivityThread.java:4203)
01-02 17:20:58.889: ERROR/AndroidRuntime(249): at java.lang.reflect.Method.invokeNative(Native Method)
01-02 17:20:58.889: ERROR/AndroidRuntime(249): at java.lang.reflect.Method.invoke(Method.java:521)
01-02 17:20:58.889: ERROR/AndroidRuntime(249): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:791)
01-02 17:20:58.889: ERROR/AndroidRuntime(249): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:549)
01-02 17:20:58.889: ERROR/AndroidRuntime(249): at dalvik.system.NativeStart.main(Native Method)**
这是我的.java文件:
package com.shoppinglist;
import android.app.ListActivity;
import android.app.Dialog;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
public class ShoppingList extends ListActivity {
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Button button1main = (Button) findViewById(R.id.Button01main);
button1main.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
final Dialog dialog = new Dialog(ShoppingList.this);
dialog.setContentView(R.layout.maindialog);
dialog.setCancelable(true);
Button button = (Button) dialog.findViewById(R.id.cancel);
button.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
dialog.dismiss();
}
});
dialog.show();
}
});
}
}
我的layout.xml:
<?xml version="1.0" encoding="utf-8"?>
<ListView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#FFCC00"
android:padding="10dp"
android:id="@+id/listview">
<Button
android:id="@+id/Button01main"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Add item..."/>
</ListView>
我的对话框xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:id="@+id/layout_root"
android:orientation="vertical"
android:background="#FFFFFF"
android:minHeight="100dp"
android:minWidth="300dp">
<EditText
android:id="@+id/edittext"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:hint="Type the name of an item here...">
</EditText>
<LinearLayout
android:id="@+id/button_layout"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="horizontal"
android:layout_gravity="right">
<Button
android:id="@+id/ok"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="OK"
android:layout_gravity="bottom">
</Button>
<Button
android:id="@+id/cancel"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Cancel"
android:layout_gravity="bottom">
</Button>
</LinearLayout>
</LinearLayout>
任何帮助将不胜感激。我需要代码示例来修复,我不是很有经验。
答案 0 :(得分:3)
在你的布局xml中,你试图在ListView中添加一个按钮。 ListView是一个AdapterView,正如错误所示,所以它必须由一个适配器填充,该适配器提供类似“事物”的列表 - 这些可以是字符串列表(来自数组列表)或自定义视图列表创建,但它们基本上都是相同类型的东西 - 你不能,例如,添加一个按钮,然后另一个添加一个字符串。创建一个适配器,在ListView中提供所需的东西。