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java - Activity 崩溃(文件处理和相机)

转载 作者:太空宇宙 更新时间:2023-11-04 12:17:04 25 4
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以下 Activity 拍摄一张照片,将其存储在存储中,并将其显示在 Activity 的 ImageView 中。当我单击照片并点击“确定”按钮时,会出现一条消息“不幸的是,相机已停止”,并显示相机 Activity 屏幕。未设置 ImageView。单击的图像存储在存储中(使用文件资源管理器检查)

相机.java

public class Camera extends AppCompatActivity {

static final int REQUEST_TAKE_PHOTO = 1;
String mCurrentPhotoPath;
ImageView ivCaptured;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_camera);
ivCaptured = (ImageView) findViewById(R.id.ivCaptured);
dispatchTakePictureIntent();
}

private void dispatchTakePictureIntent() {
Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
// Ensure that there's a camera activity to handle the intent
if (takePictureIntent.resolveActivity(getPackageManager()) != null) {
// Create the File where the photo should go
File photoFile = null;
try {
photoFile = createImageFile();
} catch (IOException ex) {
// Error occurred while creating the File
}
// Continue only if the File was successfully created
if (photoFile != null) {
Uri photoURI = FileProvider.getUriForFile(Camera.this, "com.example.android.fileprovider", photoFile);
takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, photoURI);
startActivityForResult(takePictureIntent, REQUEST_TAKE_PHOTO);
}
//galleryAddPic();
setPic();
}
}

private File createImageFile() throws IOException {
// Create an image file name
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
String imageFileName = "JPEG_" + timeStamp + "_";
File storageDir = getExternalFilesDir(Environment.DIRECTORY_PICTURES);
File image = File.createTempFile(
imageFileName, /* prefix */
".jpg", /* suffix */
storageDir /* directory */
);
// Save a file: path for use with ACTION_VIEW intents
mCurrentPhotoPath = "file:" + image.getAbsolutePath();
return image;
}

/*private void galleryAddPic() {
Intent mediaScanIntent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
File f = new File(mCurrentPhotoPath);
Uri contentUri = Uri.fromFile(f);
mediaScanIntent.setData(contentUri);
this.sendBroadcast(mediaScanIntent);
}*/

private void setPic() {
// Get the dimensions of the View
int targetW = ivCaptured.getLayoutParams().width;
int targetH = ivCaptured.getLayoutParams().height;

// Get the dimensions of the bitmap
BitmapFactory.Options bmOptions = new BitmapFactory.Options();
bmOptions.inJustDecodeBounds = true;
BitmapFactory.decodeFile(mCurrentPhotoPath, bmOptions);
int photoW = bmOptions.outWidth;
int photoH = bmOptions.outWidth;

// Determine how much to scale down the image
int scaleFactor = Math.min(photoW / targetW, photoH / targetH);

// Decode the image file into a Bitmap sized to fill the View
bmOptions.inJustDecodeBounds = false;
bmOptions.inSampleSize = scaleFactor;
bmOptions.inPurgeable = true;

Bitmap bitmap = BitmapFactory.decodeFile(mCurrentPhotoPath, bmOptions);
ivCaptured.setImageBitmap(bitmap);
}
}

activity_camera.xml:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:gravity="center">

<ImageView
android:layout_width="250dp"
android:layout_height="250dp"
android:id="@+id/ivCaptured"
android:src="@drawable/photo"
android:baselineAlignBottom="false" />

</LinearLayout>

list :

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.kjsce.beproject.samarthan">

<uses-feature
android:name="android.hardware.camera"
android:required="true" />
<uses-feature android:name="android.hardware.camera.autofocus" />
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission
android:name="android.permission.WRITE_EXTERNAL_STORAGE"
android:maxSdkVersion="18" />

<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".Home" />
<activity android:name=".Camera" />
<activity android:name=".History"></activity>

<provider
android:name="android.support.v4.content.FileProvider"
android:authorities="com.example.android.fileprovider"
android:exported="false"
android:grantUriPermissions="true"
android:readPermission="com.company.app.fileprovider.READ">
<meta-data
android:name="android.support.FILE_PROVIDER_PATHS"
android:resource="@xml/file_paths"></meta-data>
</provider>

</application>

</manifest>

文件路径.xml:

<?xml version="1.0" encoding="utf-8"?>
<paths xmlns:android="http://schemas.android.com/apk/res/android">
<external-path name="my_images" path="Android/data/com.kjsce.beproject.samarthan/files/Pictures" />
</paths>

日志猫:

09-01 18:23:38.278 11159-11159/? D/dalvikvm: Late-enabling CheckJNI
09-01 18:23:38.378 11159-11159/com.kjsce.beproject.samarthan I/ActivityThread: Pub com.example.android.fileprovider: android.support.v4.content.FileProvider
09-01 18:23:38.438 11159-11159/com.kjsce.beproject.samarthan W/dalvikvm: VFY: unable to find class referenced in signature (Landroid/view/SearchEvent;)
09-01 18:23:38.442 11159-11159/com.kjsce.beproject.samarthan I/dalvikvm: Could not find method android.view.Window$Callback.onSearchRequested, referenced from method android.support.v7.view.WindowCallbackWrapper.onSearchRequested
09-01 18:23:38.442 11159-11159/com.kjsce.beproject.samarthan W/dalvikvm: VFY: unable to resolve interface method 14517: Landroid/view/Window$Callback;.onSearchRequested (Landroid/view/SearchEvent;)Z
09-01 18:23:38.442 11159-11159/com.kjsce.beproject.samarthan D/dalvikvm: VFY: replacing opcode 0x72 at 0x0002
09-01 18:23:38.442 11159-11159/com.kjsce.beproject.samarthan I/dalvikvm: Could not find method android.view.Window$Callback.onWindowStartingActionMode, referenced from method android.support.v7.view.WindowCallbackWrapper.onWindowStartingActionMode
09-01 18:23:38.442 11159-11159/com.kjsce.beproject.samarthan W/dalvikvm: VFY: unable to resolve interface method 14521: Landroid/view/Window$Callback;.onWindowStartingActionMode (Landroid/view/ActionMode$Callback;I)Landroid/view/ActionMode;
09-01 18:23:38.442 11159-11159/com.kjsce.beproject.samarthan D/dalvikvm: VFY: replacing opcode 0x72 at 0x0002
09-01 18:23:38.494 11159-11159/com.kjsce.beproject.samarthan I/dalvikvm: Could not find method android.view.ViewGroup.onRtlPropertiesChanged, referenced from method android.support.v7.widget.Toolbar.onRtlPropertiesChanged
09-01 18:23:38.494 11159-11159/com.kjsce.beproject.samarthan W/dalvikvm: VFY: unable to resolve virtual method 14417: Landroid/view/ViewGroup;.onRtlPropertiesChanged (I)V
09-01 18:23:38.506 11159-11159/com.kjsce.beproject.samarthan D/dalvikvm: VFY: replacing opcode 0x6f at 0x0007
09-01 18:23:38.518 11159-11159/com.kjsce.beproject.samarthan I/dalvikvm: Could not find method android.content.res.TypedArray.getChangingConfigurations, referenced from method android.support.v7.widget.TintTypedArray.getChangingConfigurations
09-01 18:23:38.518 11159-11159/com.kjsce.beproject.samarthan W/dalvikvm: VFY: unable to resolve virtual method 407: Landroid/content/res/TypedArray;.getChangingConfigurations ()I
09-01 18:23:38.518 11159-11159/com.kjsce.beproject.samarthan D/dalvikvm: VFY: replacing opcode 0x6e at 0x0002
09-01 18:23:38.522 11159-11159/com.kjsce.beproject.samarthan I/dalvikvm: Could not find method android.content.res.TypedArray.getType, referenced from method android.support.v7.widget.TintTypedArray.getType
09-01 18:23:38.522 11159-11159/com.kjsce.beproject.samarthan W/dalvikvm: VFY: unable to resolve virtual method 429: Landroid/content/res/TypedArray;.getType (I)I
09-01 18:23:38.522 11159-11159/com.kjsce.beproject.samarthan D/dalvikvm: VFY: replacing opcode 0x6e at 0x0002
09-01 18:23:38.778 11159-11163/com.kjsce.beproject.samarthan D/dalvikvm: GC_CONCURRENT freed 207K, 3% free 10939K/11271K, paused 151ms+1ms, total 214ms
09-01 18:23:38.814 11159-11159/com.kjsce.beproject.samarthan D/libEGL: loaded /system/lib/egl/libEGL_genymotion.so
09-01 18:23:38.830 11159-11159/com.kjsce.beproject.samarthan D/libEGL: loaded /system/lib/egl/libGLESv1_CM_genymotion.so
09-01 18:23:38.834 11159-11159/com.kjsce.beproject.samarthan D/libEGL: loaded /system/lib/egl/libGLESv2_genymotion.so
09-01 18:23:38.866 11159-11159/com.kjsce.beproject.samarthan W/EGL_genymotion: eglSurfaceAttrib not implemented
09-01 18:23:38.874 11159-11159/com.kjsce.beproject.samarthan D/OpenGLRenderer: Enabling debug mode 0
09-01 18:23:38.962 11159-11159/com.kjsce.beproject.samarthan D/OpenGLRenderer: TextureCache::get: create texture(0xb9615438): name, size, mSize = 2, 4096, 4096
09-01 18:23:40.690 11159-11159/com.kjsce.beproject.samarthan W/EGL_genymotion: eglSurfaceAttrib not implemented
09-01 18:23:41.906 11159-11159/com.kjsce.beproject.samarthan D/dalvikvm: GC_FOR_ALLOC freed 47K, 3% free 11140K/11399K, paused 4ms, total 4ms
09-01 18:23:41.914 11159-11159/com.kjsce.beproject.samarthan D/OpenGLRenderer: TextureCache::flush: target size: 2457
09-01 18:23:41.914 11159-11159/com.kjsce.beproject.samarthan D/OpenGLRenderer: TextureCache::callback: name, removed size, mSize = 2, 4096, 0
09-01 18:23:46.990 11159-11159/com.kjsce.beproject.samarthan W/EGL_genymotion: eglSurfaceAttrib not implemented
09-01 18:23:46.994 11159-11159/com.kjsce.beproject.samarthan D/OpenGLRenderer: TextureCache::get: create texture(0xb9615438): name, size, mSize = 6, 4096, 4096

最佳答案

您来自 LogCat 的信息未显示the Java stack trace associated with your crash ,因此这对您或我们都没有帮助。

其他问题包括:

  • 您将 mCurrentPhotoPath 设置为 "file:"+ image.getAbsolutePath(),并且该值既不是文件系统路径,也不是 Uri

  • 如果您不拍照(如果 photoFilenull),则调用 setPic()

  • 您在用户拍照之前调用 setPic(),因为 startActivityForResult() 是异步的。将您的 setPic() 调用移至 onActivityResult(),然后仅当您得到 RESULT_OK(表示希望用户拍摄了照片)时。

关于java - Activity 崩溃(文件处理和相机),我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/39278702/

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