android中运行时异常

Question

package com.androidbook.triviaquiz;

import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.view.animation.LayoutAnimationController;
import android.view.animation.Animation.AnimationListener;
import android.widget.TableLayout;
import android.widget.TableRow;
import android.widget.TextView;

public class QuizSplashActivity extends TriviaQuizActivity{
     @Override
        public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.splash);
            Log.e("My App","Error Occured in on create1");
            startAnimating();
            Log.e("My App","Error Occured in on create1");

        }
     public void startAnimating() {
         try{
            TextView logo1 = (TextView) findViewById(R.id.textView1);
            Animation fade1 = AnimationUtils.loadAnimation(this, R.anim.fade_in);
            logo1.startAnimation(fade1);

            Log.e("My App","Error Occured in start animating1");
            TextView logo2 = (TextView) findViewById(R.id.textView2);
            Animation fade2 = AnimationUtils.loadAnimation(this, R.anim.fade_in2);
            logo2.startAnimation(fade2);
            Log.e("My App","Error Occured in start animating2");
            fade2.setAnimationListener(new AnimationListener() {
         public void onAnimationEnd(Animation animation) {
                    // The animation has ended, transition to the Main Menu screen
                    startActivity(new Intent(QuizSplashActivity.this, QuizMenuActivity.class));
                    QuizSplashActivity.this.finish();
         }
         public void onAnimationRepeat(Animation animation) {
         }
         public void onAnimationStart(Animation animation) {
         }
            });
            Log.e("My App","Error Occured in start animating general");
            Animation spinin = AnimationUtils.loadAnimation(this, R.anim.custom_anim);
            LayoutAnimationController controller =
            new LayoutAnimationController(spinin);
            TableLayout table = (TableLayout) findViewById(R.id.tableLayout1);
            for (int i = 0; i < table.getChildCount(); i++) {
            TableRow row = (TableRow) table.getChildAt(i);
            row.setLayoutAnimation(controller);
            Log.e("My App","Error Occured in start animating general end ");
            }
         }
         catch(Exception ex)
         {
             Log.e("Exception logged",ex.getStackTrace().toString());

         }
     }

     @Override
     public void onPause() {
         super.onPause();
         TextView logo1 = (TextView) findViewById(R.id.textView1);
         logo1.clearAnimation();

            Log.e("My App","Error Occured in onPause1");

         TextView logo2 = (TextView) findViewById(R.id.textView2);
         logo2.clearAnimation();

            Log.e("My App","Error Occured in onPause1");
         TableLayout table = (TableLayout) findViewById(R.id.tableLayout1);
         for (int i = 0; i < table.getChildCount(); i++) {
         TableRow row = (TableRow) table.getChildAt(i);
         row.clearAnimation();
         Log.e("My App","Error Occured in onPause3");
         }
     }
     @Override 
     public void onResume(){
         super.onResume();
         startAnimating();
     }

}

这是清单文件

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="com.androidbook.triviaquiz"
      android:versionCode="1"
      android:versionName="1.0">
    <uses-sdk android:minSdkVersion="7" />

    <application android:icon="@drawable/quizicon" android:label="@string/app_name" android:debuggable="true">
      <activity android:name=".QuizSplashActivity" android:label="@string/splash">
           <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity android:name="QuizGameActivty" android:label="@string/game"></activity>
        <activity android:name="QuizHelpActivity" android:label="@string/help"></activity>
        <activity android:name="QuizMenuActivity" android:label="@string/menu"></activity>
        <activity android:name="QuizScoresActivity" android:label="@string/scores"></activity>
        <activity android:name="QuizsettingsActivity" android:label="@string/settings"></activity>

    </application>

</manifest>

在调试模式下抛出的异常：

{com.androidbook.triviaquiz/com.androidbook.triviaquiz.QuizSplashActivity}: java.lang.ClassCastException: android.widget.TextView

布局文件启动活动

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:weightSum="1">
    <LinearLayout android:layout_width="fill_parent" android:id="@+id/linearLayout1" android:layout_height="wrap_content" android:orientation="vertical" android:background="@android:color/black" android:layout_weight="0.94" android:weightSum="1">
        <TextView android:layout_height="wrap_content" android:layout_width="fill_parent" android:layout_weight="0.08" android:text="@string/header" android:textColor="@color/logo_color" android:textSize="24pt" android:id="@+id/textView1"></TextView>
        <TableLayout android:layout_width="fill_parent" android:layout_height="wrap_content" android:id="@+id/tableLayout1" android:layout_weight="0.48" android:weightSum="1" android:stretchColumns="*">
            <TableRow android:id="@+id/tableRow1" android:layout_height="wrap_content" android:layout_width="fill_parent">
                <ImageView android:src="@drawable/splash1" android:id="@+id/imageView1" android:layout_height="wrap_content" android:layout_width="fill_parent"></ImageView>
                <ImageView android:src="@drawable/splash2" android:id="@+id/imageView2" android:layout_width="wrap_content" android:layout_height="wrap_content"></ImageView>
            </TableRow>
            <TableRow android:id="@+id/tableRow2" android:layout_height="wrap_content" android:layout_width="fill_parent">
                <ImageView android:src="@drawable/splash3" android:id="@+id/imageView3" android:layout_width="wrap_content" android:layout_height="wrap_content"></ImageView>
                <ImageView android:src="@drawable/splash4" android:id="@+id/imageView4" android:layout_width="wrap_content" android:layout_height="wrap_content"></ImageView>
            </TableRow>
            <TextView android:layout_height="wrap_content" android:id="@+id/textView2" android:layout_width="fill_parent" android:textColor="@color/logo_color" android:fadeScrollbars="true" android:focusableInTouchMode="true" android:textSize="24pt" android:text="@string/footer" android:layout_weight="0.36"></TextView>
            </TableLayout>
        <TextView android:layout_width="fill_parent" android:text="@string/version" android:background="@color/version_bkgrd" android:textColor="@color/version_color" android:id="@+id/textView3" android:layout_gravity="center_horizontal" android:layout_height="32dp" android:lineSpacingExtra="@dimen/version_spacing"></TextView>
    </LinearLayout>
</LinearLayout>

Answer 1

好吧，一切看起来都很好..但我仍然希望您检查两个地方：

1. 确保您的布局的文件名确实是splash
2. 如果您之前已将其他名称命名为textView1或textView2，您可能需要清理项目并从头开始重建