Question

我正在尝试添加一个密码（我没有使用alertDialog）和一个启动画面（这是我的问题）密码在它询问时工作但在此之前我得到了一个崩溃的原因工作

我为启动画面制作了一个XML文件

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
android:layout_height="fill_parent" 
android:layout_width="fill_parent" 
android:orientation="vertical" 
xmlns:android="http://schemas.android.com/apk/res/android">  
<ImageView android:id="@+id/splashscreen" 
android:layout_gravity="center" 
android:layout_height="fill_parent" 
android:layout_width="wrap_content" 
android:src="@drawable/untitled">  
</ImageView></LinearLayout>

当我尝试添加命令以在主程序中获取启动画面时

  AlertDialog.Builder alert = new AlertDialog.Builder(this);                 
    alert.setTitle("Login");  
    alert.setMessage("Enter Pin :");  
    alert.setCancelable(false);

    setContentView(R.layout.splashscreen);

     // Set an EditText view to get user input   
     final EditText input = new EditText(this); 
     alert.setView(input);

        alert.setPositiveButton("Ok", new DialogInterface.OnClickListener() {  
        public void onClick(DialogInterface dialog, int whichButton) {  
            String value = input.getText().toString();
            String compar = "123456";
                if(value.equals(compar))
                {
                    Log.d( TAG, "Pin Value : " + value);
                   copiezmView.setVisibility(View.VISIBLE);
                }    
                else
                {
                    Toast.makeText(getApplicationContext(), "Acces Denied", Toast.LENGTH_SHORT).show();
                    alerta();
                }

我得到了这次崩溃

java.lang.RuntimeException: Unable to start activity ComponentInfo{///////}: java.lang.RuntimeException: Your content must have a ListView whose id attribute is 'android.R.id.list'

那么我做错了什么？启动画面的目的是我想要在AlertDialog后面并且在后面的内容之前，所以用户如果不知道密码无法看到后面的内容（我使用setView，但仅适用于linearLayout）而不是PrefferenceScreen

完整的logCat

04-12 13:09:49.734: E/AndroidRuntime(1731): FATAL EXCEPTION: main
04-12 13:09:49.734: E/AndroidRuntime(1731): java.lang.RuntimeException: Unable to start     activity ComponentInfo{com.zegoggles.smssync/com.zegoggles.smssync.SmsSync}:    java.lang.RuntimeException: Your content must have a ListView whose id attribute is   'android.R.id.list'
04-12 13:09:49.734: E/AndroidRuntime(1731):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2180)
04-12 13:09:49.734: E/AndroidRuntime(1731):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
04-12 13:09:49.734: E/AndroidRuntime(1731):     at android.app.ActivityThread.access$600(ActivityThread.java:141)
04-12 13:09:49.734: E/AndroidRuntime(1731):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
04-12 13:09:49.734: E/AndroidRuntime(1731):     at android.os.Handler.dispatchMessage(Handler.java:99)
04-12 13:09:49.734: E/AndroidRuntime(1731):     at android.os.Looper.loop(Looper.java:137)
04-12 13:09:49.734: E/AndroidRuntime(1731):     at android.app.ActivityThread.main(ActivityThread.java:5039)
04-12 13:09:49.734: E/AndroidRuntime(1731):     at java.lang.reflect.Method.invokeNative(Native Method)
04-12 13:09:49.734: E/AndroidRuntime(1731):     at    java.lang.reflect.Method.invoke(Method.java:511)
04-12 13:09:49.734: E/AndroidRuntime(1731):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
04-12 13:09:49.734: E/AndroidRuntime(1731):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
04-12 13:09:49.734: E/AndroidRuntime(1731):     at dalvik.system.NativeStart.main(Native Method)
04-12 13:09:49.734: E/AndroidRuntime(1731): Caused by: java.lang.RuntimeException: Your content must have a ListView whose id attribute is 'android.R.id.list'
04-12 13:09:49.734: E/AndroidRuntime(1731):     at android.app.ListActivity.onContentChanged(ListActivity.java:243)
04-12 13:09:49.734: E/AndroidRuntime(1731):     at android.preference.PreferenceActivity.onContentChanged(PreferenceActivity.java:959)
04-12 13:09:49.734: E/AndroidRuntime(1731):     at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:273)
04-12 13:09:49.734: E/AndroidRuntime(1731):     at android.app.Activity.setContentView(Activity.java:1881)
04-12 13:09:49.734: E/AndroidRuntime(1731):     at com.zegoggles.smssync.SmsSync.alerta(SmsSync.java:132)
04-12 13:09:49.734: E/AndroidRuntime(1731):     at com.zegoggles.smssync.SmsSync.onCreate(SmsSync.java:118)
04-12 13:09:49.734: E/AndroidRuntime(1731):     at android.app.Activity.performCreate(Activity.java:5104)
04-12 13:09:49.734: E/AndroidRuntime(1731):     at     android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080)
04-12 13:09:49.734: E/AndroidRuntime(1731):     at       android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144)
04-12 13:09:49.734: E/AndroidRuntime(1731):     ... 11 more

Answer 1

从1行崩溃输出我可以看出，你有一个ListActivity。而您尚未将ListView ID设为@android:id/list。

将listview ID设为

android:id="@android:id/list"

你的问题将得到解决。希望它有所帮助。

Android启动画面和密码

1 个答案: