捕获图片并在ImageView中显示-Android
嘿，伙计们，我正在使用我的网络摄像头在模拟器中模拟摄像头，当我去拍照并选择复选标记按钮使用图片时，我在尝试将图像显示回应用程序上的我的捕获图片并在ImageView中显示-Android,android,Android,嘿，伙计们，我正在使用我的网络摄像头在模拟器中模拟摄像头，当我去拍照并选择复选标记按钮使用图片时，我在尝试将图像显示回应用程序上的我的ImageView时遇到了一个错误 这是我的密码： 发起人： Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); startActivityForResult(takePictureIntent, CAMERA_PIC_REQUEST);
ImageViewIntent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(takePictureIntent, CAMERA_PIC_REQUEST);
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == CAMERA_PIC_REQUEST) {
if (resultCode == RESULT_OK) {
Uri selectedImageUri = data.getData();
//OI FILE Manager
filemanagerstring = selectedImageUri.getPath();
//MEDIA GALLERY
selectedImagePath = getPath(selectedImageUri);
img.setImageURI(selectedImageUri);
imagePath.getBytes();
Bitmap bm = BitmapFactory.decodeFile(imagePath);
Log.w("Here","error");
Bitmap bm = BitmapFactory.decodeFile(imagePath);
ImageView image = (ImageView) findViewById(R.id.gimg1);
image.setImageBitmap(bm);
} else if (resultCode == RESULT_CANCELED){
}
}
}
运行时错误if(requestCode==CAMERA_PIC_REQUEST && resultCode==RESULT_OK){
Bitmap image = (Bitmap) data.getExtras().get("data");
ImageView image = (ImageView) findViewById(R.id.gimg1);
image.setImageBitmap(image);
}
data.getData（）data.getExtra（“data”）dataintent位图您调用的是
data.getData（）data.getExtra（“data”）dataintentpackage com.tseg.android.mctemplate;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.InputStream;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.ContentResolver;
import android.content.ContentValues;
import android.content.DialogInterface;
import android.content.Intent;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.provider.MediaStore.Images;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.Toast;
import com.tseg.android.mctemplate.R;
public class PhotoTake extends Activity {
Button add1 ;
ImageView img1 ;
private static final int ACTIVITY_PHOTOS = 0;
private static final String PACKAGE = "spine";
Uri mCapturedImageURI;
private int photo_count = 0;
boolean hasPhotos = false;
Bitmap bitmap;
String[] paths;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.photo);
add1 = (Button) findViewById(R.id.add1);
img1 = (ImageView) findViewById(R.id.img1);
add1.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
ShowDialog(100, 1000);
}
});
}
void ShowDialog(final int req, final int choose) {
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setMessage("");
builder.setTitle("Select Photo")
.setCancelable(false)
.setNegativeButton("Take Photo",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,
int which) {
File pictureFileDir = getDir();
if (!pictureFileDir.exists() && !pictureFileDir.mkdirs()) {
Log.d("Photo Take", "Can't create directory to save image.");
Toast.makeText(PhotoTake.this , "Can't create directory to save image.",
Toast.LENGTH_LONG).show();
return;
}
SimpleDateFormat dateFormat = new SimpleDateFormat("yyyymmddhhmmss");
String date = dateFormat.format(new Date());
String photoFile = "Picture_" + date + ".jpg";
String filepath = pictureFileDir.getPath() + File.separator;
File imageFile = new File(filepath , photoFile);
ContentValues image = new ContentValues();
image.put(Images.Media.TITLE, photoFile);
image.put(Images.Media.DISPLAY_NAME, photoFile);
image.put(Images.Media.DESCRIPTION, "Accident data Accachment " + date);
image.put(Images.Media.DATE_ADDED, date);
image.put(Images.Media.DATE_TAKEN, date);
image.put(Images.Media.DATE_MODIFIED, date);
image.put(Images.Media.MIME_TYPE, "image/jpeg");
image.put(Images.Media.ORIENTATION, 0);
File parent = imageFile.getParentFile();
String path = parent.toString().toLowerCase();
String name = parent.getName().toLowerCase();
image.put(Images.ImageColumns.BUCKET_ID, path.hashCode());
image.put(Images.ImageColumns.BUCKET_DISPLAY_NAME, name);
image.put(Images.Media.SIZE, imageFile.length());
image.put(Images.Media.DATA, imageFile.getAbsolutePath());
mCapturedImageURI = PhotoTake.this.getContentResolver().insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, image);
Intent intent = new Intent(
MediaStore.ACTION_IMAGE_CAPTURE);
intent.putExtra(MediaStore.EXTRA_OUTPUT,
mCapturedImageURI);
startActivityForResult(intent, req);
}
})
.setPositiveButton("Choose Existing",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(Intent.createChooser(
intent, "Complete action using"),
choose);
}
});
AlertDialog alert = builder.create();
alert.show();
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
// From camera
if (requestCode == 100 && resultCode == Activity.RESULT_OK) {
if (mCapturedImageURI != null) {
img1.setImageBitmap(getScaledBitmap(mCapturedImageURI));;
System.out.println("Onactivity Result uri = " + mCapturedImageURI.toString());
} else {
Toast.makeText(PhotoTake.this, "Error getting Image",
Toast.LENGTH_SHORT).show();
}
}
//From gallery
if (requestCode == 1000) {
if (resultCode == Activity.RESULT_OK) {
Uri selectedImage = data.getData();
System.out.println("Content Path : " + selectedImage.toString());
if (selectedImage != null) {
img1.setImageBitmap(getScaledBitmap(selectedImage));
} else {
Toast.makeText(PhotoTake.this, "Error getting Image",
Toast.LENGTH_SHORT).show();
}
} else if (resultCode == Activity.RESULT_CANCELED) {
Toast.makeText(PhotoTake.this, "No Photo Selected",
Toast.LENGTH_SHORT).show();
}
}
}
public Bitmap getBitmap(String path) {
Bitmap myBitmap = null;
File imgFile = new File(path);
if (imgFile.exists()) {
myBitmap = BitmapFactory.decodeFile(imgFile.getAbsolutePath());
}
return myBitmap;
}
public String getPath(Uri photoUri) {
String filePath = "";
if (photoUri != null) {
String[] filePathColumn = { MediaStore.Images.Media.DATA };
Cursor cursor = getContentResolver().query(photoUri,
filePathColumn, null, null, null);
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
filePath = cursor.getString(columnIndex);
cursor.close();
}
return filePath;
}
private File getDir() {
File sdDir = Environment
.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES);
return new File(sdDir, "SpineAttachments");
}
private Bitmap getScaledBitmap(Uri uri){
Bitmap thumb = null ;
try {
ContentResolver cr = getContentResolver();
InputStream in = cr.openInputStream(uri);
BitmapFactory.Options options = new BitmapFactory.Options();
options.inSampleSize=8;
thumb = BitmapFactory.decodeStream(in,null,options);
} catch (FileNotFoundException e) {
Toast.makeText(PhotoTake.this , "File not found" , Toast.LENGTH_SHORT).show();
}
return thumb ;
}
}
您可以使用以下代码。它功能齐全，允许您设置相机和多媒体资料中的图像。我几乎可以肯定您的运行时错误是“OutOfMemoryError:位图大小超过VM预算”，因为我看到您已将捕获的图像直接加载到imageView。您应该对其进行缩放，请查看我下面代码中名为GetScaledBitmap的方法。如果您仅在将图像加载到imageview时使用该方法，则希望您的代码能够正常工作。完整的例子是为你做的，希望它有帮助
package com.tseg.android.mctemplate;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.InputStream;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.ContentResolver;
import android.content.ContentValues;
import android.content.DialogInterface;
import android.content.Intent;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.provider.MediaStore.Images;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.Toast;
import com.tseg.android.mctemplate.R;
public class PhotoTake extends Activity {
Button add1 ;
ImageView img1 ;
private static final int ACTIVITY_PHOTOS = 0;
private static final String PACKAGE = "spine";
Uri mCapturedImageURI;
private int photo_count = 0;
boolean hasPhotos = false;
Bitmap bitmap;
String[] paths;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.photo);
add1 = (Button) findViewById(R.id.add1);
img1 = (ImageView) findViewById(R.id.img1);
add1.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
ShowDialog(100, 1000);
}
});
}
void ShowDialog(final int req, final int choose) {
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setMessage("");
builder.setTitle("Select Photo")
.setCancelable(false)
.setNegativeButton("Take Photo",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,
int which) {
File pictureFileDir = getDir();
if (!pictureFileDir.exists() && !pictureFileDir.mkdirs()) {
Log.d("Photo Take", "Can't create directory to save image.");
Toast.makeText(PhotoTake.this , "Can't create directory to save image.",
Toast.LENGTH_LONG).show();
return;
}
SimpleDateFormat dateFormat = new SimpleDateFormat("yyyymmddhhmmss");
String date = dateFormat.format(new Date());
String photoFile = "Picture_" + date + ".jpg";
String filepath = pictureFileDir.getPath() + File.separator;
File imageFile = new File(filepath , photoFile);
ContentValues image = new ContentValues();
image.put(Images.Media.TITLE, photoFile);
image.put(Images.Media.DISPLAY_NAME, photoFile);
image.put(Images.Media.DESCRIPTION, "Accident data Accachment " + date);
image.put(Images.Media.DATE_ADDED, date);
image.put(Images.Media.DATE_TAKEN, date);
image.put(Images.Media.DATE_MODIFIED, date);
image.put(Images.Media.MIME_TYPE, "image/jpeg");
image.put(Images.Media.ORIENTATION, 0);
File parent = imageFile.getParentFile();
String path = parent.toString().toLowerCase();
String name = parent.getName().toLowerCase();
image.put(Images.ImageColumns.BUCKET_ID, path.hashCode());
image.put(Images.ImageColumns.BUCKET_DISPLAY_NAME, name);
image.put(Images.Media.SIZE, imageFile.length());
image.put(Images.Media.DATA, imageFile.getAbsolutePath());
mCapturedImageURI = PhotoTake.this.getContentResolver().insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, image);
Intent intent = new Intent(
MediaStore.ACTION_IMAGE_CAPTURE);
intent.putExtra(MediaStore.EXTRA_OUTPUT,
mCapturedImageURI);
startActivityForResult(intent, req);
}
})
.setPositiveButton("Choose Existing",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(Intent.createChooser(
intent, "Complete action using"),
choose);
}
});
AlertDialog alert = builder.create();
alert.show();
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
// From camera
if (requestCode == 100 && resultCode == Activity.RESULT_OK) {
if (mCapturedImageURI != null) {
img1.setImageBitmap(getScaledBitmap(mCapturedImageURI));;
System.out.println("Onactivity Result uri = " + mCapturedImageURI.toString());
} else {
Toast.makeText(PhotoTake.this, "Error getting Image",
Toast.LENGTH_SHORT).show();
}
}
//From gallery
if (requestCode == 1000) {
if (resultCode == Activity.RESULT_OK) {
Uri selectedImage = data.getData();
System.out.println("Content Path : " + selectedImage.toString());
if (selectedImage != null) {
img1.setImageBitmap(getScaledBitmap(selectedImage));
} else {
Toast.makeText(PhotoTake.this, "Error getting Image",
Toast.LENGTH_SHORT).show();
}
} else if (resultCode == Activity.RESULT_CANCELED) {
Toast.makeText(PhotoTake.this, "No Photo Selected",
Toast.LENGTH_SHORT).show();
}
}
}
public Bitmap getBitmap(String path) {
Bitmap myBitmap = null;
File imgFile = new File(path);
if (imgFile.exists()) {
myBitmap = BitmapFactory.decodeFile(imgFile.getAbsolutePath());
}
return myBitmap;
}
public String getPath(Uri photoUri) {
String filePath = "";
if (photoUri != null) {
String[] filePathColumn = { MediaStore.Images.Media.DATA };
Cursor cursor = getContentResolver().query(photoUri,
filePathColumn, null, null, null);
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
filePath = cursor.getString(columnIndex);
cursor.close();
}
return filePath;
}
private File getDir() {
File sdDir = Environment
.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES);
return new File(sdDir, "SpineAttachments");
}
private Bitmap getScaledBitmap(Uri uri){
Bitmap thumb = null ;
try {
ContentResolver cr = getContentResolver();
InputStream in = cr.openInputStream(uri);
BitmapFactory.Options options = new BitmapFactory.Options();
options.inSampleSize=8;
thumb = BitmapFactory.decodeStream(in,null,options);
} catch (FileNotFoundException e) {
Toast.makeText(PhotoTake.this , "File not found" , Toast.LENGTH_SHORT).show();
}
return thumb ;
}
}
单击按钮并在imageview中设置存储图像的非常简单的方法 `公共类MainActivity扩展了活动{ }` 设置此清单
单击按钮并在imageview中设置存储图像的非常简单的方法 `公共类MainActivity扩展了活动{ }` 设置此清单
刚刚更新了函数以包含数据来自何处…正在等待日志刚刚更新了函数以包含数据来自何处…正在等待日志上述建议非常有效，非常感谢您的代码：）上述建议非常有效，非常感谢您的代码：）
private static final int CAMERA_PIC_REQUEST = 22;
Uri cameraUri;
Button BtnSelectImage;
private ImageView ImgPhoto;
private String Camerapath ;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ImgPhoto = (ImageView) findViewById(R.id.imageView1);
BtnSelectImage = (Button) findViewById(R.id.button1);
BtnSelectImage.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View view) {
// TODO Auto-generated method stub
try {
Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(cameraIntent, CAMERA_PIC_REQUEST);
} catch (Exception e) {
Toast.makeText(getApplicationContext(), "Couldn't load photo", Toast.LENGTH_LONG).show();
}
}
});
}
@Override
public void onActivityResult(final int requestCode, int resultCode, Intent data) {
try {
switch (requestCode) {
case CAMERA_PIC_REQUEST:
if (resultCode == RESULT_OK) {
try {
Bitmap photo = (Bitmap) data.getExtras().get("data");
ImgPhoto.setImageBitmap(photo);
} catch (Exception e) {
Toast.makeText(this, "Couldn't load photo", Toast.LENGTH_LONG).show();
}
}
break;
default:
break;
}
} catch (Exception e) {
}
}