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我使用parcelable在活动之间传递数据（请不要说这是错误的方法，因为有很多关于此的讨论）。在意图中发送Parcelable时显示白色屏幕当startActivity调用
这是我如何捕获图像：
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.CAMERA}, REQUEST_IMAGE_CAPTURE);
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
if (intent.resolveActivity(getPackageManager()) != null) {
startActivityForResult(intent, REQUEST_IMAGE_CAPTURE);
}
}
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
switch (requestCode) {
case 30: {
if (grantResults.length > 0
&& grantResults[0] == PackageManager.PERMISSION_GRANTED) {
} else {
Toast.makeText(CameraCapture.this, "Permission denied to read your External storage", Toast.LENGTH_SHORT).show();
}
return;
}
}
}
@Override
protected void onActivityResult(int requestCode, int resultCode, final Intent data) {
super.onActivityResult(requestCode, resultCode, data);
dateTimer = getTime();
Log.d("codig",String.valueOf(requestCode));
if (requestCode == REQUEST_IMAGE_CAPTURE && resultCode == RESULT_OK) {
Log.d("resultOK","resultOK");
CropImage.activity(data.getData())
.setAspectRatio(1,1)
.setInitialCropWindowPaddingRatio(0)
.setActivityTitle("Corte a foto")
.setActivityMenuIconColor(R.color.nephritis)
.start(this);
}
if (requestCode == CropImage.CROP_IMAGE_ACTIVITY_REQUEST_CODE) {
CropImage.ActivityResult result = CropImage.getActivityResult(data);
Log.d("pict12","here");
if (resultCode == RESULT_OK) {
Log.d("pict12","here2");
Uri uri = result.getUri();
Bitmap pic = null;
try {
pic = MediaStore.Images.Media.getBitmap(this.getContentResolver(), uri);
} catch (IOException e) {
e.printStackTrace();
}
image = encodeImage(pic);
showDetailsDialog(data);
} else if (resultCode == CropImage.CROP_IMAGE_ACTIVITY_RESULT_ERROR_CODE) {
Exception error = result.getError();
Log.d("pict12",error.toString());
}
}
}
当我拍摄照片我开始建设者使用simpleCropView LIB削减图像，之后返回到第二onactivityResult，和显示了一个细节对话框是这样的：
private void showDetailsDialog(final Intent data) {
final CharSequence[] items = {"Tem fruto?","É arbusto","É árvore?","Tem flor?","Tem espinhos?"};
// arraylist to keep the selected items
final ArrayList seletedItems=new ArrayList();
AlertDialog dialog = new AlertDialog.Builder(this)
.setTitle("Detalhes da fotografia")
.setMultiChoiceItems(items, null, new DialogInterface.OnMultiChoiceClickListener() {
@Override
public void onClick(DialogInterface dialog, int indexSelected, boolean isChecked) {
if (isChecked) {
// If the user checked the item, add it to the selected items
seletedItems.add(indexSelected);
} else if (seletedItems.contains(indexSelected)) {
// Else, if the item is already in the array, remove it
seletedItems.remove(Integer.valueOf(indexSelected));
}
}
}).setPositiveButton("OK", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int id) {
hasFruit = seletedItems.contains(0);
isBush = seletedItems.contains(1);
isTree = seletedItems.contains(2);
hasFlower = seletedItems.contains(3);
hasThorns = seletedItems.contains(4);
if(seletedItems.contains(3)){
dialog.dismiss();
colorDialog(data);
}
else{
startSimiliarActivity();
}
}
}).setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int id) {
Log.d("RECREATE","recria");
dialog.dismiss();
CameraCapture.this.recreate();
}
}).create();
dialog.show();
}
如果这里面细节对话框我检查一下把我送到另一个对话框来改变花的颜色，如果我不检查就花送我去similiarActivityMethod WHE我发送用户到acitvity，我有空白的布局。
基本上我传递一个对象与字节[]填充和其它数据，没有那么大，我认为，当我打电话显示空白活性我通过parcelable这样的：
public void startSimiliarActivity(){
Log.d("HELLWOR","HELLOWOR");
Intent intent = new Intent(CameraCapture.this,SimiliarPhotos.class);
if(location.getAltitude() != 0.0){
altitude = location.getAltitude() - 50;
}
Photo photo = new Photo(image,altitude,location.getLongitude(),location.getAltitude(),dateTimer);
intent.putExtra("photo",photo);
startActivity(intent);
}
和我把它像这样：
package com.example.afcosta.inesctec.pt.android.models;
import android.net.Uri;
import android.os.Parcel;
import android.os.Parcelable;
import java.io.Serializable;
import java.net.URI;
/**
* Created by FilipeCosta on 25/05/2017.
*/
public class Photo implements Parcelable {
private int id;
private Uri image;
private byte[] cropedImage;
private String path;
private Double lat;
private Double lon;
private Double alt;
private String time;
public Photo() {
}
@Override
public int describeContents() {
return 0;
}
public Photo(byte[] cropedImage,Double lat, Double lon, Double alt, String time) {
this.cropedImage = cropedImage;
this.lat = lat;
this.lon = lon;
this.alt = alt;
this.time = time;
}
@Override
public void writeToParcel(Parcel dest, int flags) {
dest.writeInt(this.id);
dest.writeParcelable(this.image, flags);
dest.writeByteArray(this.cropedImage);
dest.writeString(this.path);
dest.writeValue(this.lat);
dest.writeValue(this.lon);
dest.writeValue(this.alt);
dest.writeString(this.time);
}
protected Photo(Parcel in) {
this.id = in.readInt();
this.image = in.readParcelable(Uri.class.getClassLoader());
this.cropedImage = in.createByteArray();
this.path = in.readString();
this.lat = (Double) in.readValue(Double.class.getClassLoader());
this.lon = (Double) in.readValue(Double.class.getClassLoader());
this.alt = (Double) in.readValue(Double.class.getClassLoader());
this.time = in.readString();
}
public static final Creator<Photo> CREATOR = new Creator<Photo>() {
@Override
public Photo createFromParcel(Parcel source) {
return new Photo(source);
}
@Override
public Photo[] newArray(int size) {
return new Photo[size];
}
};
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public Uri getImage() {
return image;
}
public void setImage(Uri image) {
this.image = image;
}
public byte[] getCropedImage() {
return cropedImage;
}
public void setCropedImage(byte[] cropedImage) {
this.cropedImage = cropedImage;
}
public String getPath() {
return path;
}
public void setPath(String path) {
this.path = path;
}
public Double getLat() {
return lat;
}
public void setLat(Double lat) {
this.lat = lat;
}
public Double getLon() {
return lon;
}
public void setLon(Double lon) {
this.lon = lon;
}
public Double getAlt() {
return alt;
}
public void setAlt(Double alt) {
this.alt = alt;
}
public String getTime() {
return time;
}
public void setTime(String time) {
this.time = time;
}
我认为这个问题是因为当我作了评论我实例化效果很好的照片行至parcelable有关，但我需要的实例：/
对此有何帮助？
请写出用于获取Photo类的代码，以便我们可以提供帮助 – Mahesh
图像数据通常不适用于可分类。相反，将它写入（临时）文件，传递路径并在另一侧读取它。 – RobCo