我是Android应用程序制作新手，我正在使用eclipse。 Ecplise没有显示任何错误，但是，当我使用模拟器时，应用程序在完全加载之前崩溃。感谢您的帮助：）
我的.java文件 package com.example.praag_complete;
import android.app.Activity;
import android.content.res.Configuration;
import android.os.Bundle;
import android.support.v4.app.ActionBarDrawerToggle;
import android.support.v4.widget.DrawerLayout;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.view.View;
import android.widget.Toast;
public class MainActivity extends Activity {
private String[] mListItems;
private DrawerLayout mDrawerLayout;
private ListView mDrawerList;
private ActionBarDrawerToggle mDrawerToggle;
private String mTitle;
private String mDrawerTitle;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mDrawerTitle = "Menu";
mListItems = getResources().getStringArray(R.array.drawer_primary_array);
mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
mDrawerList = (ListView) findViewById(R.id.left_drawer);
// Set the adapter for the listview
mDrawerList.setAdapter(new ArrayAdapter<String>(this,R.layout.drawer_list_item,mListItems));
// Set the list's click listener
mDrawerList.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View view,int position, long id) {
Toast.makeText(getApplicationContext(),
"Click ListItem Number " + position, Toast.LENGTH_LONG).show();
mTitle = "Section" + position;
}
});
//openy closy thingy
mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
mDrawerToggle = new ActionBarDrawerToggle(
this, /* host Activity */
mDrawerLayout, /* DrawerLayout object */
R.drawable.ic_drawer, /* nav drawer icon to replace 'Up' caret */
R.string.drawer_open, /* "open drawer" description */
R.string.drawer_close /* "close drawer" description */
) {
/** Called when a drawer has settled in a completely closed state. */
public void onDrawerClosed(View view) {
super.onDrawerClosed(view);
getActionBar().setTitle(mTitle);
}
/** Called when a drawer has settled in a completely open state. */
public void onDrawerOpened(View drawerView) {
super.onDrawerOpened(drawerView);
getActionBar().setTitle(mDrawerTitle);
}
};
// Set the drawer toggle as the DrawerListener
mDrawerLayout.setDrawerListener(mDrawerToggle);
getActionBar().setDisplayHomeAsUpEnabled(true);
getActionBar().setHomeButtonEnabled(true);
}
@Override
protected void onPostCreate(Bundle savedInstanceState) {
super.onPostCreate(savedInstanceState);
// Sync the toggle state after onRestoreInstanceState has occurred.
mDrawerToggle.syncState();
}
@Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
mDrawerToggle.onConfigurationChanged(newConfig);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Pass the event to ActionBarDrawerToggle, if it returns
// true, then it has handled the icon touch event
if (mDrawerToggle.onOptionsItemSelected(item)) {
return true;
}
// Handle your other action bar items...
return super.onOptionsItemSelected(item);
}
}
和LogCat报告：
07-20 15:19:56.304: E/AndroidRuntime(874): FATAL EXCEPTION: main
07-20 15:19:56.304: E/AndroidRuntime(874): java.lang.IllegalStateException: ArrayAdapter requires the resource ID to be a TextView
07-20 15:19:56.304: E/AndroidRuntime(874): at android.widget.ArrayAdapter.createViewFromResource(ArrayAdapter.java:386)
07-20 15:19:56.304: E/AndroidRuntime(874): at android.widget.ArrayAdapter.getView(ArrayAdapter.java:362)
07-20 15:19:56.304: E/AndroidRuntime(874): at android.widget.AbsListView.obtainView(AbsListView.java:2271)
07-20 15:19:56.304: E/AndroidRuntime(874): at android.widget.ListView.makeAndAddView(ListView.java:1769)
07-20 15:19:56.304: E/AndroidRuntime(874): at android.widget.ListView.fillDown(ListView.java:672)
07-20 15:19:56.304: E/AndroidRuntime(874): at android.widget.ListView.fillFromTop(ListView.java:733)
07-20 15:19:56.304: E/AndroidRuntime(874): at android.widget.ListView.layoutChildren(ListView.java:1622)
07-20 15:19:56.304: E/AndroidRuntime(874): at android.widget.AbsListView.onLayout(AbsListView.java:2106)
07-20 15:19:56.304: E/AndroidRuntime(874): at android.view.View.layout(View.java:13754)
07-20 15:19:56.304: E/AndroidRuntime(874): at android.view.ViewGroup.layout(ViewGroup.java:4364)
07-20 15:19:56.304: E/AndroidRuntime(874): at android.support.v4.widget.DrawerLayout.onLayout(DrawerLayout.java:825)
07-20 15:19:56.304: E/AndroidRuntime(874): at android.view.View.layout(View.java:13754)
07-20 15:19:56.304: E/AndroidRuntime(874): at android.view.ViewGroup.layout(ViewGroup.java:4364)
07-20 15:19:56.304: E/AndroidRuntime(874): at android.widget.FrameLayout.onLayout(FrameLayout.java:448)
07-20 15:19:56.304: E/AndroidRuntime(874): at android.view.View.layout(View.java:13754)
07-20 15:19:56.304: E/AndroidRuntime(874): at android.view.ViewGroup.layout(ViewGroup.java:4364)
07-20 15:19:56.304: E/AndroidRuntime(874): at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1649)
07-20 15:19:56.304: E/AndroidRuntime(874): at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1507)
07-20 15:19:56.304: E/AndroidRuntime(874): at android.widget.LinearLayout.onLayout(LinearLayout.java:1420)
07-20 15:19:56.304: E/AndroidRuntime(874): at android.view.View.layout(View.java:13754)
07-20 15:19:56.304: E/AndroidRuntime(874): at android.view.ViewGroup.layout(ViewGroup.java:4364)
07-20 15:19:56.304: E/AndroidRuntime(874): at android.widget.FrameLayout.onLayout(FrameLayout.java:448)
07-20 15:19:56.304: E/AndroidRuntime(874): at android.view.View.layout(View.java:13754)
07-20 15:19:56.304: E/AndroidRuntime(874): at android.view.ViewGroup.layout(ViewGroup.java:4364)
07-20 15:19:56.304: E/AndroidRuntime(874): at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:1868)
07-20 15:19:56.304: E/AndroidRuntime(874): at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1689)
07-20 15:19:56.304: E/AndroidRuntime(874): at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1000)
07-20 15:19:56.304: E/AndroidRuntime(874): at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:4214)
07-20 15:19:56.304: E/AndroidRuntime(874): at android.view.Choreographer$CallbackRecord.run(Choreographer.java:725)
07-20 15:19:56.304: E/AndroidRuntime(874): at android.view.Choreographer.doCallbacks(Choreographer.java:555)
07-20 15:19:56.304: E/AndroidRuntime(874): at android.view.Choreographer.doFrame(Choreographer.java:525)
07-20 15:19:56.304: E/AndroidRuntime(874): at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:711)
07-20 15:19:56.304: E/AndroidRuntime(874): at android.os.Handler.handleCallback(Handler.java:615)
07-20 15:19:56.304: E/AndroidRuntime(874): at android.os.Handler.dispatchMessage(Handler.java:92)
07-20 15:19:56.304: E/AndroidRuntime(874): at android.os.Looper.loop(Looper.java:137)
07-20 15:19:56.304: E/AndroidRuntime(874): at android.app.ActivityThread.main(ActivityThread.java:4745)
07-20 15:19:56.304: E/AndroidRuntime(874): at java.lang.reflect.Method.invokeNative(Native Method)
07-20 15:19:56.304: E/AndroidRuntime(874): at java.lang.reflect.Method.invoke(Method.java:511)
07-20 15:19:56.304: E/AndroidRuntime(874): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
07-20 15:19:56.304: E/AndroidRuntime(874): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
07-20 15:19:56.304: E/AndroidRuntime(874): at dalvik.system.NativeStart.main(Native Method)
07-20 15:19:56.304: E/AndroidRuntime(874): Caused by: java.lang.ClassCastException: android.widget.RelativeLayout cannot be cast to android.widget.TextView
07-20 15:19:56.304: E/AndroidRuntime(874): at android.widget.ArrayAdapter.createViewFromResource(ArrayAdapter.java:379)
07-20 15:19:56.304: E/AndroidRuntime(874): ... 40 more
07-20 15:19:57.614: D/dalvikvm(874): GC_CONCURRENT freed 229K, 5% free 6229K/6535K, paused 398ms+49ms, total 1178ms
07-20 15:20:17.614: I/Process(874): Sending signal. PID: 874 SIG: 9
activity_main：
<android.support.v4.widget.DrawerLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<!-- The main content view -->
<FrameLayout
android:id="@+id/content_frame"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<!-- The navigation drawer -->
<ListView android:id="@+id/left_drawer"
android:layout_width="280dp"
android:layout_height="match_parent"
android:layout_gravity="start"
android:background="#111"/>
</android.support.v4.widget.DrawerLayout>
drawer_list_item：
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="?android:attr/listPreferredItemHeight" >
<TextView
android:text="@string/app_name"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</RelativeLayout>
答案 0 :(得分：0)
更改
mDrawerList.setAdapter(new ArrayAdapter<String>(this,R.layout.drawer_list_item,mListItems));
到
mDrawerList.setAdapter(new ArrayAdapter<String>(this,R.layout.drawer_list_item,R.id.the_id_of_a_textview_from_the_layout,mListItems));
document表示您必须使用单个TextView提供资源。这种布局是什么样的？
我猜你的R.layout.drawer_list_item应该非常相似。
<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@android:id/text1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
/>
以下是医生说的话：
By default this class expects that the provided resource id references a single TextView. If you want to use a more complex layout, use the constructors that also takes a field id. That field id should reference a TextView in the larger layout resource.