问题：
当我点击按钮时，第二个活动不会出现，我的Android Studio应用程序关闭
童宏富
当我在activity_main中单击id为addNotice的cardView时。xml第二个活动上传通知应该会出现，但我的Android studio应用程序关闭，我创建的第二个活动从未出现。我是Android Studio和Java的新手，如果有人能帮助我，我将非常感激！
这是我的主要活动。爪哇：
package com.example.adminuniversityapp;
import androidx.appcompat.app.AppCompatActivity;
import androidx.cardview.widget.CardView;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
public class MainActivity extends AppCompatActivity implements View.OnClickListener {
CardView uploadNptice;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
uploadNptice = findViewById(R.id.addNotice);
uploadNptice.setOnClickListener(this);
}
@Override
public void onClick(View v) {
switch (v.getId()){
case R.id.addNotice:
Intent intent = new Intent( MainActivity.this,UploadNotice.class);
startActivity(intent);
break;
}
}
}
这是我的主要活动。xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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:orientation="vertical"
tools:context=".MainActivity">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="5dp"
android:gravity="center"
android:orientation="horizontal">
<com.google.android.material.card.MaterialCardView
android:id="@+id/addNotice"
android:layout_width="130dp"
android:layout_height="150dp"
android:layout_margin="10dp"
app:cardElevation="5dp">
<LinearLayout
android:layout_width="135dp"
android:layout_height="match_parent"
android:gravity="center"
android:orientation="vertical">
<ImageView
android:layout_width="64dp"
android:layout_height="64dp"
android:background="@drawable/circle_green"
android:padding="15dp"
android:src="@drawable/ic_notice" />
<View
android:layout_width="match_parent"
android:layout_height="1dp"
android:layout_marginTop="10dp"
android:background="@color/lightGray" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:padding="5dp"
android:text="Upload Notice"
android:textColor="@color/textColor"
android:textStyle="bold" />
</LinearLayout>
</com.google.android.material.card.MaterialCardView>
<com.google.android.material.card.MaterialCardView
android:id="@+id/addGalleryImage"
android:layout_width="130dp"
android:layout_height="150dp"
android:layout_margin="10dp"
app:cardElevation="5dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:orientation="vertical">
<ImageView
android:layout_width="64dp"
android:layout_height="64dp"
android:background="@drawable/circle_purple"
android:padding="15dp"
android:src="@drawable/ic_gallery"/>
<View
android:layout_width="match_parent"
android:layout_height="1dp"
android:layout_marginTop="10dp"
android:background="@color/lightGray"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:padding="5dp"
android:text="Upload Image"
android:textColor="@color/textColor"
android:textStyle="bold"/>
</LinearLayout>
</com.google.android.material.card.MaterialCardView>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="5dp"
android:gravity="center"
android:orientation="horizontal">
<com.google.android.material.card.MaterialCardView
android:id="@+id/addEbook"
android:layout_width="130dp"
android:layout_height="150dp"
android:layout_margin="10dp"
app:cardElevation="5dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:orientation="vertical">
<ImageView
android:layout_width="64dp"
android:layout_height="64dp"
android:background="@drawable/circle_pink"
android:padding="15dp"
android:src="@drawable/ic_upload"/>
<View
android:layout_width="match_parent"
android:layout_height="1dp"
android:layout_marginTop="10dp"
android:background="@color/lightGray"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:padding="5dp"
android:text="Upload Ebook"
android:textColor="@color/textColor"
android:textStyle="bold"/>
</LinearLayout>
</com.google.android.material.card.MaterialCardView>
<com.google.android.material.card.MaterialCardView
android:id="@+id/faculty"
android:layout_width="130dp"
android:layout_height="150dp"
android:layout_margin="10dp"
app:cardElevation="5dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:orientation="vertical">
<ImageView
android:layout_width="64dp"
android:layout_height="64dp"
android:background="@drawable/circle_yellow"
android:padding="15dp"
android:src="@drawable/ic_group"/>
<View
android:layout_width="match_parent"
android:layout_height="1dp"
android:layout_marginTop="10dp"
android:background="@color/lightGray"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:padding="5dp"
android:text="Update Faculty"
android:textColor="@color/textColor"
android:textStyle="bold"/>
</LinearLayout>
</com.google.android.material.card.MaterialCardView>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="5dp"
android:gravity="center"
android:orientation="horizontal">
<com.google.android.material.card.MaterialCardView
android:id="@+id/deleteNotice"
android:layout_width="130dp"
android:layout_height="150dp"
android:layout_margin="10dp"
app:cardElevation="5dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:orientation="vertical">
<ImageView
android:layout_width="64dp"
android:layout_height="64dp"
android:background="@drawable/cicle_red"
android:padding="15dp"
android:src="@drawable/ic_delete"/>
<View
android:layout_width="match_parent"
android:layout_height="1dp"
android:layout_marginTop="10dp"
android:background="@color/lightGray"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:padding="5dp"
android:text="Delete Notice"
android:textColor="@color/textColor"
android:textStyle="bold"/>
</LinearLayout>
</com.google.android.material.card.MaterialCardView>
</LinearLayout>
</LinearLayout>
这里还有AndroidManifest。xml以防万一：
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.adminuniversityapp">
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/Theme.AdminUniversityApp">
<activity android:name=".UploadNotice" />
<activity
android:name=".MainActivity"
android:exported="true">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
下面是第二个活动上传otice.java：
package com.example.adminuniversityapp;
import androidx.annotation.Nullable;
import androidx.appcompat.app.AppCompatActivity;
import androidx.cardview.widget.CardView;
import android.content.Intent;
import android.graphics.Bitmap;
import android.net.Uri;
import android.os.Bundle;
import android.provider.MediaStore;
import android.view.View;
import android.widget.ImageView;
import java.io.IOException;
public class UploadNotice extends AppCompatActivity {
private CardView addImage;
private ImageView noticeImageView;
private final int REQ = 1;
private Bitmap bitmap;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_upload_notice);
addImage = findViewById(R.id.addImage);
noticeImageView = findViewById(R.id.noticeImageView);
addImage.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
openGallery();
}
});
}
private void openGallery() {
Intent pickImage = new Intent(Intent.ACTION_PICK, MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(pickImage, REQ);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if(requestCode == REQ && resultCode == RESULT_OK){
Uri uri = data.getData();
try {
bitmap = MediaStore.Images.Media.getBitmap(getContentResolver(),uri);
} catch (IOException e) {
e.printStackTrace();
}
noticeImageView.setImageBitmap(bitmap);
}
}
}
下面是第二个活动Xml代码：
<?xml version="1.0" encoding="utf-8"?>
<ScrollView 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"
tools:context=".UploadNotice"
android:padding="16dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<com.google.android.material.card.MaterialCardView
android:id="@+id/addImage"
android:layout_width="130dp"
android:layout_height="150dp"
android:layout_margin="10dp"
app:cardElevation="5dp"
android:layout_gravity="center">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:orientation="vertical">
<ImageView
android:layout_width="64dp"
android:layout_height="64dp"
android:background="@drawable/circle_purple"
android:padding="15dp"
android:src="@drawable/ic_image"/>
<View
android:layout_width="match_parent"
android:layout_height="1dp"
android:layout_marginTop="10dp"
android:background="@color/lightGray"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:padding="5dp"
android:text="Select Image"
android:textColor="@color/textColor"
android:textStyle="bold"/>
</LinearLayout>
</com.google.android.material.card.MaterialCardView>
<com.google.android.material.textfield.TextInputLayout
style="@style/Widget.Material3.TextInputLayout.OutlinedBox"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginTop="16dp">
<com.google.android.material.textfield.TextInputEditText
android:id="@+id/noticeTitle"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="Notice title" />
</com.google.android.material.textfield.TextInputLayout>
<com.google.android.material.button.MaterialButton
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Upload Notice"
android:layout_marginTop="16dp"
android:textAllCaps="false"
android:id="@+id/uploadNoticeBtn"/>
<com.google.android.material.card.MaterialCardView
android:layout_marginTop="16dp"
android:layout_width="match_parent"
android:layout_height="400dp">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:scaleType="centerCrop"
android:id="@+id/noticeImageView"/>
</com.google.android.material.card.MaterialCardView>
</LinearLayout>
</ScrollView>
这是我点击Cardview按钮时的Logcat
2022-02-26 16:09:00.615 26302-26302/com.example.adminuniversityapp I/Timeline: Timeline: Activity_launch_request time:449776768
2022-02-26 16:09:00.633 26302-26357/com.example.adminuniversityapp V/FA: Recording user engagement, ms: 60057
2022-02-26 16:09:00.636 26302-26357/com.example.adminuniversityapp V/FA: Using local app measurement service
2022-02-26 16:09:00.641 26302-26357/com.example.adminuniversityapp V/FA: Activity paused, time: 598904714
2022-02-26 16:09:00.651 26302-26302/com.example.adminuniversityapp V/FA: onActivityCreated
2022-02-26 16:09:00.656 26302-26302/com.example.adminuniversityapp D/DecorView[]: getWindowModeFromSystem windowmode is 1
2022-02-26 16:09:00.667 26302-26357/com.example.adminuniversityapp V/FA: Connection attempt already in progress
2022-02-26 16:09:00.681 26302-26302/com.example.adminuniversityapp E/libc: Access denied finding property "ro.vendor.pref_scale_resolution"
2022-02-26 16:09:00.687 26302-26302/com.example.adminuniversityapp E/libc: Access denied finding property "ro.vendor.pref_scale_resolution"
2022-02-26 16:09:00.693 26302-26302/com.example.adminuniversityapp E/libc: Access denied finding property "ro.vendor.pref_scale_resolution"
2022-02-26 16:09:00.722 26302-26302/com.example.adminuniversityapp D/AndroidRuntime: Shutting down VM
2022-02-26 16:09:00.724 26302-26302/com.example.adminuniversityapp E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.adminuniversityapp, PID: 26302
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.adminuniversityapp/com.example.adminuniversityapp.UploadNotice}: android.view.InflateException: Binary XML file line #55 in com.example.adminuniversityapp:layout/activity_upload_notice: Binary XML file line #55 in com.example.adminuniversityapp:layout/activity_upload_notice: Error inflating class com.google.android.material.textfield.TextInputLayout
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3580)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3752)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:85)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2191)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:236)
at android.app.ActivityThread.main(ActivityThread.java:8049)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:620)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1011)
Caused by: android.view.InflateException: Binary XML file line #55 in com.example.adminuniversityapp:layout/activity_upload_notice: Binary XML file line #55 in com.example.adminuniversityapp:layout/activity_upload_notice: Error inflating class com.google.android.material.textfield.TextInputLayout
Caused by: android.view.InflateException: Binary XML file line #55 in com.example.adminuniversityapp:layout/activity_upload_notice: Error inflating class com.google.android.material.textfield.TextInputLayout
Caused by: java.lang.reflect.InvocationTargetException
at java.lang.reflect.Constructor.newInstance0(Native Method)
at java.lang.reflect.Constructor.newInstance(Constructor.java:343)
at android.view.LayoutInflater.createView(LayoutInflater.java:856)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:1012)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:963)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:1142)
at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:1103)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:1145)
at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:1103)
at android.view.LayoutInflater.inflate(LayoutInflater.java:684)
at android.view.LayoutInflater.inflate(LayoutInflater.java:536)
at android.view.LayoutInflater.inflate(LayoutInflater.java:479)
at androidx.appcompat.app.AppCompatDelegateImpl.setContentView(AppCompatDelegateImpl.java:706)
at androidx.appcompat.app.AppCompatActivity.setContentView(AppCompatActivity.java:195)
at com.example.adminuniversityapp.UploadNotice.onCreate(UploadNotice.java:32)
at android.app.Activity.performCreate(Activity.java:8142)
at android.app.Activity.performCreate(Activity.java:8114)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1308)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3553)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3752)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:85)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2191)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:236)
at android.app.ActivityThread.main(ActivityThread.java:8049)
at java.lang.reflect.Method.invoke(Native Method)
2022-02-26 16:09:00.725 26302-26302/com.example.adminuniversityapp E/AndroidRuntime: at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:620)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1011)
Caused by: java.lang.IllegalArgumentException: This component requires that you specify a valid TextAppearance attribute. Update your app theme to inherit from Theme.MaterialComponents (or a descendant).
at com.google.android.material.internal.ThemeEnforcement.checkTextAppearance(ThemeEnforcement.java:185)
at com.google.android.material.internal.ThemeEnforcement.obtainTintedStyledAttributes(ThemeEnforcement.java:116)
at com.google.android.material.textfield.TextInputLayout.<init>(TextInputLayout.java:474)
at com.google.android.material.textfield.TextInputLayout.<init>(TextInputLayout.java:433)
... 30 more
2022-02-26 16:09:00.749 26302-26302/com.example.adminuniversityapp I/Process: Sending signal. PID: 26302 SIG: 9
有两个主题。xml:
<resources xmlns:tools="http://schemas.android.com/tools">
<!-- Base application theme. -->
<style name="Theme.AdminUniversityApp" parent="Theme.MaterialComponents.Light.DarkActionBar">
<!-- Primary brand color. -->
<item name="colorPrimary">@color/purple_500</item>
<item name="colorPrimaryVariant">@color/purple_700</item>
<item name="colorOnPrimary">@color/white</item>
<!-- Secondary brand color. -->
<item name="colorSecondary">@color/teal_200</item>
<item name="colorSecondaryVariant">@color/teal_700</item>
<item name="colorOnSecondary">@color/black</item>
<!-- Status bar color. -->
<item name="android:statusBarColor" tools:targetApi="l">?attr/colorPrimaryVariant</item>
<!-- Customize your theme here. -->
</style>
</resources>
<resources xmlns:tools="http://schemas.android.com/tools">
<!-- Base application theme. -->
<style name="Theme.AdminUniversityApp" parent="Theme.MaterialComponents.Light.DarkActionBar">
<!-- Primary brand color. -->
<item name="colorPrimary">@color/purple_200</item>
<item name="colorPrimaryVariant">@color/purple_700</item>
<item name="colorOnPrimary">@color/black</item>
<!-- Secondary brand color. -->
<item name="colorSecondary">@color/teal_200</item>
<item name="colorSecondaryVariant">@color/teal_200</item>
<item name="colorOnSecondary">@color/black</item>
<!-- Status bar color. -->
<item name="android:statusBarColor" tools:targetApi="l">?attr/colorPrimaryVariant</item>
<!-- Customize your theme here. -->
</style>
</resources>
共有1个答案
皇甫福
在styles.xml文件中，将主题更改为这样的内容：
<style name="Theme.AdminUniversityApp" parent="Theme.Material3.DayNight">
...
</style>
类似资料：
-
当我在设备上运行应用程序时单击增量按钮时，我的应用程序意外地强制执行这是我的activity_main.xml代码 这是我的mainactivity.java文件 这是调试报告05-23 22:14:45.695 297 36-29736/com.orton.birthdayCard E/AndroidRuntime：致命异常：主进程：com.orton.birthdayCard,PID：2973
-
一切正常，应用程序出现了。但当我点击任何切换按钮时，应用程序就会崩溃。 我试过了，但找不到问题。其实我的知识还不够，我是这个领域的新手。所以请帮帮我。 这是查看活动。JAVA 还有这只logcat 2020-03-18 03:16:50.407 31609-31609/? E/lpaper。wallper:运行时设置的未知位_标志：0x8000 2020-03-18 03:17:04.862 31
-
每当我单击登录页面中的“注册”按钮时，应用程序就会崩溃，无法移动到下一个活动。我已经在这个问题上纠缠了一天，似乎在任何地方都找不到解决办法。 下面是我为注册按钮方法编写的代码。（和是文本输入布局） Logcat在第7行显示错误，即ref.child（…行）。我尝试了第7行的替代方法，如：
-
这是崩溃错误logcat，每次我时钟在我的寄存器btn应用程序崩溃。 我的模拟器是在Android模拟器设备上的2gb ram。 2019-09-22 16:36:39.307 6454-6454/com。康奈克斯。connexsocial E/AndroidRuntime:致命异常：主进程：com。康奈克斯。connexsocial，PID:6454Android系统。所容纳之物Activity
-
请建议与android画中画模式相关的问题，如果我的应用程序有堆栈像家庭活动- 或 我想在应用程序图标启动时关闭PIP活动（PlayerActivity）。由于PIP活动在单独的任务中运行，如何关闭应用程序运行的所有其他任务？
-
我是android新手，我正在学习一些教程，在这一点上，当我点击登录按钮时，应用程序不断崩溃。当我运行应用程序并单击登录按钮时，应用程序崩溃，在logcat中，它显示java RuntimeException的这个错误。这是我的logcat，loginactivity。xml和loginactivity。JAVA JAVAlang.RuntimeException:无法启动活动组件信息{com.e