当我尝试在不同的设备相机应用部队密切数据里面空 [英] camera inside app force close data null when i try in different device
问题描述
我有一个APK应用程序，它可以拍照，并采取视频的按钮。
i have an apk app which can take photo and take video with a button.
这是我的活动
package com.example.testcamera;
import java.io.File;
import java.text.SimpleDateFormat;
import java.util.Date;
import android.app.Activity;
import android.content.ContentValues;
import android.content.Intent;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.util.Log;
import android.view.View;
public class AndroidCameraTestsActivity extends Activity
{
private static final String TAG = AndroidCameraTestsActivity.class.getSimpleName();
private static final int CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE = 100;
private static final int CAPTURE_VIDEO_ACTIVITY_REQUEST_CODE = 200;
public static final int MEDIA_TYPE_IMAGE = 1;
public static final int MEDIA_TYPE_VIDEO = 2;
private Uri fileUri;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
}
/**
* https://developer.android.com/guide/topics/media/camera.html
* **/
public void onCaptureImage(View v)
{
// give the image a name so we can store it in the phone's default location
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
ContentValues values = new ContentValues();
values.put(MediaStore.Images.Media.TITLE, "IMG_" + timeStamp + ".jpg");
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
//fileUri = getOutputMediaFileUri(MEDIA_TYPE_IMAGE); // create a file to save the image (this doesn't work at all for images)
fileUri = getContentResolver().insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values); // store content values
intent.putExtra( MediaStore.EXTRA_OUTPUT, fileUri);
// start the image capture Intent
startActivityForResult(intent, CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE);
}
/**
* https://developer.android.com/guide/topics/media/camera.html
* **/
public void onCaptureVideo(View v)
{
//create new Intent
Intent intent = new Intent(MediaStore.ACTION_VIDEO_CAPTURE);
//fileUri = getOutputMediaFileUri(MEDIA_TYPE_VIDEO); // create a file to save the video in specific folder (this works for video only)
//intent.putExtra(MediaStore.EXTRA_OUTPUT, fileUri); // set the image file name
intent.putExtra(MediaStore.EXTRA_VIDEO_QUALITY, 1); // set the video image quality to high
// start the Video Capture Intent
startActivityForResult(intent, CAPTURE_VIDEO_ACTIVITY_REQUEST_CODE);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data)
{
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE) {
if (resultCode == RESULT_OK) {
// Originally I was going to iterate through the list of images and grab last added to the MediaStore.
// But this is not necessary if we store the Uri in the image
/*
String[] projection = {MediaStore.Images.ImageColumns._ID};
String sort = MediaStore.Images.ImageColumns._ID + " DESC";
Cursor cursor = this.managedQuery(MediaStore.Images.Thumbnails.EXTERNAL_CONTENT_URI, projection, null, null, sort);
try{
cursor.moveToFirst();
Long id = cursor.getLong(cursor.getColumnIndexOrThrow(MediaStore.Images.ImageColumns._ID));
fileUri = Uri.withAppendedPath(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, String.valueOf(id));
} finally{
cursor.close();
}
*/
if(fileUri != null) {
Log.d(TAG, "Image saved to:\n" + fileUri);
Log.d(TAG, "Image path:\n" + fileUri.getPath());
Log.d(TAG, "Image name:\n" + getName(fileUri)); // use uri.getLastPathSegment() if store in folder
}
} else if (resultCode == RESULT_CANCELED) {
// User cancelled the image capture
} else {
// Image capture failed, advise user
}
}
if (requestCode == CAPTURE_VIDEO_ACTIVITY_REQUEST_CODE) {
if (resultCode == RESULT_OK) {
// Video captured and saved to fileUri specified in the Intent
fileUri = (Uri) data.getData();
if(fileUri != null) {
Log.d(TAG, "Video saved to:\n" + fileUri);
Log.d(TAG, "Video path:\n" + fileUri.getPath());
Log.d(TAG, "Video name:\n" + getName(fileUri)); // use uri.getLastPathSegment() if store in folder
}
} else if (resultCode == RESULT_CANCELED) {
// User cancelled the video capture
} else {
// Video capture failed, advise user
}
}
}
/** Create a file Uri for saving an image or video to specific folder
* https://developer.android.com/guide/topics/media/camera.html#saving-media
* */
private static Uri getOutputMediaFileUri(int type)
{
return Uri.fromFile(getOutputMediaFile(type));
}
/** Create a File for saving an image or video */
private static File getOutputMediaFile(int type)
{
// To be safe, you should check that the SDCard is mounted
if(Environment.getExternalStorageState() != null) {
// this works for Android 2.2 and above
File mediaStorageDir = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES), "AndroidCameraTestsFolder");
// This location works best if you want the created images to be shared
// between applications and persist after your app has been uninstalled.
// Create the storage directory if it does not exist
if (! mediaStorageDir.exists()) {
if (! mediaStorageDir.mkdirs()) {
Log.d(TAG, "failed to create directory");
return null;
}
}
// Create a media file name
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
File mediaFile;
if (type == MEDIA_TYPE_IMAGE){
mediaFile = new File(mediaStorageDir.getPath() + File.separator +
"IMG_"+ timeStamp + ".jpg");
} else if(type == MEDIA_TYPE_VIDEO) {
mediaFile = new File(mediaStorageDir.getPath() + File.separator +
"VID_"+ timeStamp + ".mp4");
} else {
return null;
}
return mediaFile;
}
return null;
}
// grab the name of the media from the Uri
protected String getName(Uri uri)
{
String filename = null;
try {
String[] projection = { MediaStore.Images.Media.DISPLAY_NAME };
Cursor cursor = managedQuery(uri, projection, null, null, null);
if(cursor != null && cursor.moveToFirst()){
int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DISPLAY_NAME);
filename = cursor.getString(column_index);
} else {
filename = null;
}
} catch (Exception e) {
Log.e(TAG, "Error getting file name: " + e.getMessage());
}
return filename;
}
}
我第一个设备上运行的应用程序，我有2个按钮，拍照和采取视频。
当我点击采取视频在此应用程序，它工作得很好，但是当我点击拍照从按钮，应用程序始终为强制关闭。
When I click take video in this app and it works well but when i click take picture from the button, the app always "force closes".
这是我的错误的logcat
this is my error logcat
11-19 14:43:27.085: ERROR/AndroidRuntime(6903): FATAL EXCEPTION: main
11-19 14:43:27.085: ERROR/AndroidRuntime(6903): java.lang.NullPointerException
11-19 14:43:27.085: ERROR/AndroidRuntime(6903): at com.android.camera.Camera.initializeFirstTime(Came ra.java:328)
11-19 14:43:27.085: ERROR/AndroidRuntime(6903): at com.android.camera.Camera.access$1100(Camera.java: 95)
11-19 14:43:27.085: ERROR/AndroidRuntime(6903): at com.android.camera.Camera$MainHandler.handleMessag e(Camera.java:282)
11-19 14:43:27.085: ERROR/AndroidRuntime(6903): at android.os.Handler.dispatchMessage(Handler.java:99 )
11-19 14:43:27.085: ERROR/AndroidRuntime(6903): at android.os.Looper.loop(Looper.java:130)
11-19 14:43:27.085: ERROR/AndroidRuntime(6903): at android.app.ActivityThread.main(ActivityThread.jav a:3683)
11-19 14:43:27.085: ERROR/AndroidRuntime(6903): at java.lang.reflect.Method.invokeNative(Native Method)
11-19 14:43:27.085: ERROR/AndroidRuntime(6903): at java.lang.reflect.Method.invoke(Method.java:507)
11-19 14:43:27.085: ERROR/AndroidRuntime(6903): at com.android.internal.os.ZygoteInit$MethodAndArgsCa ller.run(ZygoteInit.java:839)
11-19 14:43:27.085: ERROR/AndroidRuntime(6903): at com.android.internal.os.ZygoteInit.main(ZygoteInit .java:597)
11-19 14:43:27.085: ERROR/AndroidRuntime(6903): at dalvik.system.NativeStart.main(Native Method)
11-19 14:43:27.093: WARN/ActivityManager(1308): Force finishing activity com.android.camera/.Camera
11-19 14:43:27.109: WARN/ActivityManager(1308): Force finishing activity makemachine.android.examples/.PhotoCaptureExample
编辑：这是我用单一的应用程序按钮不同的活动
EDIT : this is my different activity with single app button
package com.example.maincamera;
import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;
public class OpenCameraDemo extends Activity {
private static final int CAMERA_PIC_REQUEST = 2500;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Button b = (Button)findViewById(R.id.Button01);
b.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(cameraIntent, CAMERA_PIC_REQUEST);
}
});
}
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == CAMERA_PIC_REQUEST) {
Bitmap image = (Bitmap) data.getExtras().get("data");
ImageView imageview = (ImageView) findViewById(R.id.ImageView01);
imageview.setImageBitmap(image);
}
}
}
这个程序仍过于错误，我已经尝试了许多应用程序。在google.the错误还是寻找同样喜欢我logcat的误差
this app still error too, i have tried many app. searching in google.the error still same like my logcat error
当我尝试在其他设备上运行它，这个应用程序完美的作品。
When i try to run it on other device, this app works perfectly.
如何解决这个问题，这样我可以运行，并拍摄照片在我的第一个设备？
How to fix this, So that i can run and take photos in my first device?
BR
亚历
推荐答案
崩溃是设备的相机应用程序，而不是你自己内部发生的情况。不幸的是，因为这个设备上的相机应用程序可能是什么是真正的AOSP一个高度定制的变化，它不是完全清楚失败是什么，但<一href=\"https://github.com/android/platform_packages_apps_camera/blob/gingerbread-mr4-release/src/com/android/camera/Camera.java\"相对=nofollow>这里是在您的异常发生的AOSP 2.3.7源代码树的源文件的链接。行号不匹配正好给任何感兴趣的，这是什么告诉我你的特定设备上的应用程序已经至少有一些被定制。
The crash is happening inside the device's Camera application, not your own. Unfortunately, because the Camera application on this device could be a heavily customized variation of what is actually in AOSP, it's not entirely clear what the failure is, but here is a link to the source file in the AOSP 2.3.7 source tree where your exception is occurring. The line numbers don't match up exactly to anything of interest, which is what tells me the application on your particular device has been customized at least some.
在 initializeFirstTime（）方法，在异常发生时，其中一个方法被称为可能是问题的根源任何对象，但这些都不是有关在意图参数的请求通过在，所以这是令人怀疑有什么可以做，使这个适当操作。
Any object in the initializeFirstTime() method, where the exception occurs, where a method is called could be the source of the issue, but none of this is related to the Intent parameters your request passes in, so it is doubtful there is much you can do to make this operate appropriately.
因此，你可能有更好的运气实现自己在自己的应用程序捕获功能。很可能，这台设备上的Android API是比它的捆绑系统的应用更稳定。 这里是你如何创建自己的相机preVIEW一个例子并拍摄活动。
As a result, you may have better luck implementing the capture functionality yourself in your own application. It is likely that the Android APIs on this device are more stable than the system applications it's bundled with. Here is an example of how you can create your own camera preview and capture Activity.
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