我正在尝试开发一个利用Firebase并上传和检索照片+文本名称的应用程序。
尝试拍照时出现错误，该应用程序使用本机电话的摄像头。
我的Manifest.xml文件当前如下所示：
<?xml version="1.0" encoding="utf-8"?>
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.CAMERA" />
<uses-feature
android:name="android.hardware.Camera"
android:required="true" />
<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/AppTheme">
<activity android:name=".EditImage"></activity>
<activity android:name=".ImageActivity" />
<activity android:name=".display_image" />
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<provider
android:name="androidx.core.content.FileProvider"
android:authorities="${applicationId}.provider"
android:exported="false"
android:grantUriPermissions="true">
<meta-data
android:name="android.support.FILE_PROVIDER_PATHS"
android:resource="@xml/provider_paths" />
</provider>
</application>
和provider_path像这样：
<?xml version="1.0" encoding="utf-8"?>
<paths xmlns:android="http://schemas.android.com/apk/res/android">
<external-path
name="external"
path="." />
<external-files-path
name="external_files"
path="." />
<cache-path
name="cache"
path="." />
<external-cache-path
name="external_cache"
path="." />
<files-path
name="files"
path="." />
</paths>
我的拍照代码如下所示：
public void captureImage(View view) {
Intent cameraIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
if(cameraIntent.resolveActivity(getPackageManager())!=null){
File imageFile = null;
try {
imageFile = getImageFile();
} catch (IOException e) {
e.printStackTrace();
}
if(imageFile!=null){
Uri imageUri = FileProvider.getUriForFile(Objects.requireNonNull(getApplicationContext()),
BuildConfig.APPLICATION_ID + ".provider", imageFile);
cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT,imageUri);
startActivityForResult(cameraIntent, IMAGE_REQUEST);
}
}
}
这是“ getImageFile（）”函数
private File getImageFile()throws IOException {
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
String imageName = "jpg_"+timeStamp+"_";
File storageDir = getExternalFilesDir(Environment.DIRECTORY_DCIM);
File imageFile = File.createTempFile(imageName, ".jpg", storageDir);
currentImagePath = imageFile.getAbsolutePath();
return imageFile;
}
这里的问题是，当单击名为“ captureImage（）”的按钮时，我抛出了以下内容：
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.camera.camerapsi, PID: 26813
java.lang.IllegalStateException: Could not execute method for android:onClick
at androidx.appcompat.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:402)
at android.view.View.performClick(View.java:7201)
at android.view.View.performClickInternal(View.java:7170)
at android.view.View.access$3500(View.java:806)
at android.view.View$PerformClick.run(View.java:27582)
at android.os.Handler.handleCallback(Handler.java:883)
at android.os.Handler.dispatchMessage(Handler.java:100)
at android.os.Looper.loop(Looper.java:214)
at android.app.ActivityThread.main(ActivityThread.java:7710)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:516)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:950)
Caused by: java.lang.reflect.InvocationTargetException
at java.lang.reflect.Method.invoke(Native Method)
at androidx.appcompat.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:397)
at android.view.View.performClick(View.java:7201)
at android.view.View.performClickInternal(View.java:7170)
at android.view.View.access$3500(View.java:806)
at android.view.View$PerformClick.run(View.java:27582)
at android.os.Handler.handleCallback(Handler.java:883)
at android.os.Handler.dispatchMessage(Handler.java:100)
at android.os.Looper.loop(Looper.java:214)
at android.app.ActivityThread.main(ActivityThread.java:7710)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:516)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:950)
Caused by: java.lang.IllegalArgumentException: Couldn't find meta-data for provider with authority com.google.firebase.database.provider
at androidx.core.content.FileProvider.parsePathStrategy(FileProvider.java:606)
at androidx.core.content.FileProvider.getPathStrategy(FileProvider.java:579)
at androidx.core.content.FileProvider.getUriForFile(FileProvider.java:417)
at com.camera.camerapsi.MainActivity.captureImage(MainActivity.java:198)
at java.lang.reflect.Method.invoke(Native Method)
at androidx.appcompat.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:397)
at android.view.View.performClick(View.java:7201)
at android.view.View.performClickInternal(View.java:7170)
at android.view.View.access$3500(View.java:806)
at android.view.View$PerformClick.run(View.java:27582)
at android.os.Handler.handleCallback(Handler.java:883)
at android.os.Handler.dispatchMessage(Handler.java:100)
at android.os.Looper.loop(Looper.java:214)
at android.app.ActivityThread.main(ActivityThread.java:7710)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:516)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:950)
我不知道为什么我的代码不起作用，任何帮助将不胜感激！
最佳答案
该问题是非常具体的情况，下面的行BuildConfig.APPLICATION_ID + ".provider", imageFile);是问题。在这种情况下，“ BuildConfig.APPLICATION_ID”将获取Firebase的ID，而不是应用程序本身。
修复方法如下："com.yourpackagehere.yourpackage" + ".provider", imageFile); sinse Android Studio，可能与Firebase中的库冲突，无法使用其自己的BuildConfig
希望这对将来遇到像我这样的问题的人有所帮助！