嘿伙计们请帮助我找出问题...它表明SetContentView设置不好。我该怎么办...
主要活动
package com.example.freddie.ukulimamachinery;
import android.app.Activity;
import android.content.Intent;
import android.content.pm.ActivityInfo;
import android.os.Handler;
import android.support.v7.app.ActionBar;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Window;
import android.view.WindowManager;
public class MainActivity extends AppCompatActivity {
private final int SPLASH_DISPLAY_LENGTH=5000;
@Override
protected void onCreate(Bundle savedInstanceState) {
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,WindowManager.LayoutParams.FLAG_FULLSCREEN);
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
ActionBar actionBar=getSupportActionBar();
if (actionBar !=null)
{
actionBar.hide();
}
new Handler().postDelayed(new Runnable() {
@Override
public void run() {
Intent startActivityIntent=new Intent(MainActivity.this,LoginActivity.class);
startActivity(startActivityIntent);
MainActivity.this.finish();
}
},SPLASH_DISPLAY_LENGTH);
}
}
activity_main
<?xml version="1.0" encoding="utf-8"?>
<RelativLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="@dimen/_16sdp"
tools:context="com.example.freddie.ukulimamachinery.LoginActivity">
</RelativLayout>
LoginActivity
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center_horizontal"
android:orientation="vertical"
android:padding="@dimen/_16sdp"
tools:context="com.example.freddie.ukulimamachinery.LoginActivity">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/logo"
android:layout_centerHorizontal="true"
android:layout_alignParentTop="true"
android:layout_marginTop="32dp"
android:src="@drawable/ukulima"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/login_error"
android:layout_alignParentRight="true"
android:layout_alignParentStart="true"
android:layout_below="@+id/logo"
android:textColor="@color/colorAccent"
android:text="@string/no_text"
android:padding="@dimen/_8sdp"
android:layout_marginTop="@dimen/_56sdp"
/>
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/email"
android:hint="@string/email_hint"
android:inputType="textEmailAddress"
android:maxLines="1"
android:padding="@dimen/_12sdp"
android:background="@drawable/bottom_border"
android:textColor="@color/colorBlack"
android:layout_below="@+id/login_error"
android:layout_centerHorizontal="true"
android:layout_marginTop="@dimen/_8sdp"
android:singleLine="true"/>
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/password"
android:hint="@string/password_hint"
android:inputType="textEmailAddress"
android:maxLines="1"
android:padding="@dimen/_12sdp"
android:background="@drawable/bottom_border"
android:textColor="@color/colorBlack"
android:layout_below="@+id/email"
android:layout_centerHorizontal="true"
android:layout_marginTop="@dimen/_8sdp"
android:singleLine="true"/>
<Button
android:id="@+id/login_button"
style="?android:textAppearanceSmall"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/password"
android:text="@string/login_button"
android:textColor="@color/colorWhite"
android:textStyle="bold"
android:paddingBottom="@dimen/_16sdp"
android:background="@color/colorPrimaryDark"
android:layout_marginTop="@dimen/_8sdp"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/register"
android:layout_marginTop="@dimen/_24sdp"
android:textColor="@color/colorPrimaryDark"
android:text="@string/sign_up"
android:layout_below="@+id/login_button"
android:layout_centerHorizontal="true"/>
</RelativeLayout>
LogCat显示这些
ukulimamachinery/com.example.freddie.ukulimamachinery.MainActivity}: android.view.InflateException: Binary XML file line #2: Error inflating class RelativLayout
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2338)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2390)
at android.app.ActivityThread.access$800(ActivityThread.java:151)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1321)
at android.os.Handler.dispatchMessage(Handler.java:110)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:5299)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:825)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:641)
at dalvik.system.NativeStart.main(Native Method)
Caused by: android.view.InflateException: Binary XML file line #2: Error inflating class RelativLayout
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:707)
at android.view.LayoutInflater.inflate(LayoutInflater.java:469)
at android.view.LayoutInflater.inflate(LayoutInflater.java:397)
at android.view.LayoutInflater.inflate(LayoutInflater.java:353)
at android.support.v7.app.AppCompatDelegateImplV9.setContentView(AppCompatDelegateImplV9.java:292)
at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:140)
at com.example.freddie.ukulimamachinery.MainActivity.onCreate(MainActivity.java:23)
at android.app.Activity.performCreate(Activity.java:5264)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1088)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2302)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2390)
at android.app.ActivityThread.access$800(ActivityThread.java:151)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1321)
at android.os.Handler.dispatchMessage(Handler.java:110)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:5299)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:825)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:641)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.ClassNotFoundException: Didn't find class "android.view.RelativLayout" on path: DexPathList[[zip file "/data/app/com.example.freddie.ukulimamachinery-1.apk"],nativeLibraryDirectories=[/data/app-lib/com.example.freddie.ukulimamachinery-1, /vendor/lib, /system/lib]]
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
at java.lang.ClassLoader.loadClass(ClassLoader.java:497)
at java.lang.ClassLoader.loadClass(ClassLoader.java:457)
at android.view.LayoutInflater.createView(LayoutInflater.java:559)
at android.view.LayoutInflater.onCreateView(LayoutInflater.java:652)
at com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:66)
at android.view.LayoutInflater.onCreateView(LayoutInflater.java:669)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:694)
at android.view.LayoutInflater.inflate(LayoutInflater.java:469)
at android.view.LayoutInflater.inflate(LayoutInflater.java:397)
at android.view.LayoutInflater.inflate(LayoutInflater.java:353)
at android.support.v7.app.AppCompatDelegateImplV9.setContentView(AppCompatDelegateImplV9.java:292)
at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:140)
at com.example.freddie.ukulimamachinery.MainActivity.onCreate(MainActivity.java:23)
at android.app.Activity.performCreate(Activity.java:5264)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1088)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2302)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2390)
at android.app.ActivityThread.access$800(ActivityThread.java:151)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1321)
at android.os.Handler.dispatchMessage(Handler.java:110)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:5299)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:825)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:641)
at dalvik.system.NativeStart.main(Native Method)
09-28 13:43:08.328 31955-31955/com.example.freddie.ukulimamachinery E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.freddie.ukulimamachinery, PID: 31955
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.freddie.ukulimamachinery/com.example.freddie.ukulimamachinery.MainActivity}: android.view.InflateException: Binary XML file line #2: Error inflating class RelativLayout
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2338)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2390)
at android.app.ActivityThread.access$800(ActivityThread.java:151)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1321)
at android.os.Handler.dispatchMessage(Handler.java:110)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:5299)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:825)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:641)
at dalvik.system.NativeStart.main(Native Method)
Caused by: android.view.InflateException: Binary XML file line #2: Error inflating class RelativLayout
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:707)
at android.view.LayoutInflater.inflate(LayoutInflater.java:469)
at android.view.LayoutInflater.inflate(LayoutInflater.java:397)
at android.view.LayoutInflater.inflate(LayoutInflater.java:353)
at android.support.v7.app.AppCompatDelegateImplV9.setContentView(AppCompatDelegateImplV9.java:292)
at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:140)
at com.example.freddie.ukulimamachinery.MainActivity.onCreate(MainActivity.java:23)
at android.app.Activity.performCreate(Activity.java:5264)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1088)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2302)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2390)
at android.app.ActivityThread.access$800(ActivityThread.java:151)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1321)
at android.os.Handler.dispatchMessage(Handler.java:110)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:5299)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:825)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:641)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.ClassNotFoundException: Didn't find class "android.view.RelativLayout" on path: DexPathList[[zip file "/data/app/com.example.freddie.ukulimamachinery-1.apk"],nativeLibraryDirectories=[/data/app-lib/com.example.freddie.ukulimamachinery-1, /vendor/lib, /system/lib]]
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
at java.lang.ClassLoader.loadClass(ClassLoader.java:497)
at java.lang.ClassLoader.loadClass(ClassLoader.java:457)
at android.view.LayoutInflater.createView(LayoutInflater.java:559)
at android.view.LayoutInflater.onCreateView(LayoutInflater.java:652)
at com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:66)
at android.view.LayoutInflater.onCreateView(LayoutInflater.java:669)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:694)
at android.view.LayoutInflater.inflate(LayoutInflater.java:469)
at android.view.LayoutInflater.inflate(LayoutInflater.java:397)
at android.view.LayoutInflater.inflate(LayoutInflater.java:353)
at android.support.v7.app.AppCompatDelegateImplV9.setContentView(AppCompatDelegateImplV9.java:292)
at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:140)
at com.example.freddie.ukulimamachinery.MainActivity.onCreate(MainActivity.java:23)
at android.app.Activity.performCreate(Activity.java:5264)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1088)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2302)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2390)
at android.app.ActivityThread.access$800(ActivityThread.java:151)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1321)
at android.os.Handler.dispatchMessage(Handler.java:110)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:5299)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
此错误主要出现，因为SetContentView已在我的activity_main中指示了OnCreate选项我已将其设置为依赖于LoginActivity页面
答案 0 :(得分：5)
activity_main.xml：RelativLayout而不是RelativeLayout（字母E末尾的相对缺失）
答案 1 :(得分：0)
尝试使用 RelativeLayout 设置 RelativLayout
只需更改您的activity_main.xml：如下所示
try {
Class.forName(<driver class>);
con = DriverManager.getConnection(
"IP",
"username",
"password");
for(String dealId : items) {
String sql= "SQL Query";
preparedStatement = con.prepareStatement(sql);
rs = preparedStatement.executeQuery();
while(rs.next()) {
count += rs.getInt("total");
}
// Result should be closed here as the statement got executed?
}
System.out.println(count);
if(items.size() == count) {
dealsBelongToTheParty = true;
}
} catch (Exception e) {
e.printStackTrace();
} finally {
rs.close(); // Or this is right?
preparedStatement.close();
if(!con.isClosed())
con.close();
}
答案 2 :(得分：0)
在您的活动主要变化中：
<RelativLayout xmlns:android="http://schemas.android.com/apk/res/android"> ...
到：
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
答案 3 :(得分：-1)
将 RelativLayout 替换为activity_main.xml中的 RelativeLayout
<?xml version="1.0" encoding="utf-8"?>
<RelativLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="@dimen/_16sdp"
tools:context="com.example.freddie.ukulimamachinery.LoginActivity">
</RelativLayout>