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私はAndroidアプリに奇妙な問題があります。私にはイメージを示す活動があります。画像はSDカードに保存されます。ユーザーは、標準のACTION_SENDコードでコーディングされたコンテキストメニューから共有を選択できます。ACTION_SENDを使用してsdcardで画像を共有しています。画像が削除されます！
uriIdは、画像のURIであるpublic void shareImage(){ Intent emailShare = new Intent(android.content.Intent.ACTION_SEND); emailShare.setType("image/jpeg"); emailShare.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION); emailShare.putExtra(Intent.EXTRA_STREAM,uriId); startActivity(Intent.createChooser(emailShare,"Send picture using:")); }
下記参照してください。
これは動作し、画像はFacebookなどに送信できます。しかし、私はその後、私のアプリを終了する場合は、画像が欠落している画面を回転させる。私はログにファイルioエラーを取得しようとすると、画像を取得します。私はAstroを使って画像を検索しましたが、それはどこにも見つかりません！
私は以下のクラス全体を投稿します。誰かが何か考えがあるなら、私はとても感謝しています。
スティーブン
'package com.pengilleys.fishingsnapz;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.ArrayList;
import android.app.Activity;
import android.app.ProgressDialog;
import android.content.ContentResolver;
import android.content.Context;
import android.content.Intent;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.graphics.Matrix;
import android.graphics.PointF;
import android.graphics.RectF;
import android.net.Uri;
import android.os.Bundle;
import android.provider.MediaStore;
import android.util.FloatMath;
import android.util.Log;
import android.view.Display;
import android.view.Menu;
import android.view.MenuItem;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnTouchListener;
import android.widget.ImageView;
import android.widget.TextView;
public class ImagePreview extends Activity implements OnTouchListener{
protected Context mContext;
static final String TAG = "ImagePreview";
static final int SHARE_ID = 0;
static final int EDIT_ID = 1;
static final int PROGRESS_DIALOG = 0;
ProgressDialog progressDialog;
private Bundle extras;
protected static Bitmap bm;
protected DBAdapter db = new DBAdapter(ImagePreview.this);
Long id;
private FacebookManager fb;
private Uri uriId;
//Touch gesture related variables
Matrix matrix = new Matrix();
Matrix savedMatrix = new Matrix();
// Remember some things for zooming
PointF start = new PointF();
PointF mid = new PointF();
float oldDist = 0;
// We can be in one of these 3 states
static final int NONE = 0;
static final int DRAG = 1;
static final int ZOOM = 2;
int mode = NONE;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.image_view);
mContext = this;
try{
extras = getIntent().getExtras();
id = (Long) extras.get(DBAdapter.KEY_ROWID);
Log.d(TAG,"id="+id);
ImageView imageV = (ImageView)findViewById(R.id.image_preview);
imageV.setOnTouchListener(this);
//get image
bm = getImage(id);
imageV.setImageBitmap(bm);
imageV.setImageMatrix(matrix);
//get snap details for text overlay
ArrayList<String> details = new ArrayList<String>();
details = getSnapDetails(id);
prepareSnapDetails(details);
}catch(Exception e){
Log.e(TAG,e.toString());
}finally{
}
}
private ArrayList<String> getSnapDetails(long id){
ArrayList<String> fishDetails = new ArrayList<String>();
Cursor cursor;
//open the database and grab the snap details
db.open();
cursor = db.fetchNote(id);
db.close();
//loop through cursor results and put into our arraylist<string>
try{
startManagingCursor(cursor);
cursor.moveToFirst();
//only one row but multiple columns, manually assign columns
String value = cursor.getString(cursor.getColumnIndexOrThrow("date"));
value = checkValue(value);
fishDetails.add(value);
value = cursor.getString(cursor.getColumnIndexOrThrow("type"));
value = checkValue(value);
fishDetails.add(value);
value = cursor.getString(cursor.getColumnIndexOrThrow("weight"));
value = checkValue(value);
fishDetails.add(value);
value = cursor.getString(cursor.getColumnIndexOrThrow("place"));
value = checkValue(value);
fishDetails.add(value);
}catch(Exception e){
Log.e(TAG,e.toString());
}
db.close();
return fishDetails;
}
private String checkValue(String value){
if(value==""){value="-";};
return value;
}
private boolean prepareSnapDetails(ArrayList<String> details){
TextView tx = (TextView)findViewById(R.id.details_overlay);
tx.setText("");
String detail="";
String[] labels = new String[]{"Date: ","Type: ","Weight: ","Place: "};
try{
for(int i=0;i<4;i++){
//add text details to textview
detail = labels[i] + details.get(i) + '\n';
Log.d(TAG,detail);
CharSequence ch = detail.subSequence(0,detail.length());
tx.append(ch);
}
}catch(Exception e){
Log.e(TAG,e.toString());
}
return true;
}
private Bitmap getImage(Long id){
try{
db.open();
Cursor c = db.fetchUri(id);
uriId = Uri.parse(c.getString(c.getColumnIndexOrThrow(DBAdapter.KEY_URI)));
ContentResolver cr = getContentResolver();
Bitmap bitmap = MediaStore.Images.Media.getBitmap(cr,uriId);
Display display = getWindowManager().getDefaultDisplay();
int width = display.getWidth();
int height = display.getHeight();
if(bitmap.getWidth() > width || bitmap.getHeight() > height){
float heightRatio = (float) height/bitmap.getHeight();
float widthRatio = (float) width/bitmap.getWidth();
Log.d(TAG,"height="+heightRatio + " width=" + widthRatio);
matrix.setScale(widthRatio, heightRatio);
}else{
matrix.setTranslate(1f,1f);
Log.d(TAG,"bitmap.getWidth="+bitmap.getWidth() + " vs width="+width);
Log.d(TAG,"bitmap.getHeight="+bitmap.getHeight() + " vs height="+height);
}
db.close();
return bitmap;
} catch (FileNotFoundException e) {
Log.e("GETIMAGE",e.toString());
return null;
} catch (IOException e) {
Log.e("GETIMAGE",e.toString());
return null;
}catch(Exception e){
Log.e("GETIMAGE",e.toString());
return null;
}
}
public void shareImage(){
Intent emailShare = new Intent(android.content.Intent.ACTION_SEND);
emailShare.setType("image/jpeg");
emailShare.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
emailShare.putExtra(Intent.EXTRA_STREAM,uriId);
startActivity(Intent.createChooser(emailShare,"Send picture using:"));
}
@Override
public boolean onTouch(View v, MotionEvent event) {
ImageView view = (ImageView) v;
final float MIN_ZOOM = 0.25f;
final float MAX_ZOOM = 4;
float height = view.getDrawable().getIntrinsicHeight();
float width = view.getDrawable().getIntrinsicWidth();
float[] matrixValues = new float[9];
RectF viewRect = new RectF(0, 0, view.getWidth(), view.getHeight());
dumpEvent(event);
switch(event.getAction() & MotionEvent.ACTION_MASK){
case MotionEvent.ACTION_DOWN:
savedMatrix.set(matrix);
start.set(event.getX(), event.getY());
Log.d(TAG,"mode=DRAG");
mode=DRAG;
break;
case MotionEvent.ACTION_UP:
case MotionEvent.ACTION_POINTER_DOWN:
oldDist=spacing(event);
Log.d(TAG, "oldDist=" + oldDist);
if(oldDist>10f){
savedMatrix.set(matrix);
midPoint(mid,event);
mode=ZOOM;
Log.d(TAG,"mode=ZOOM");
}
break;
case MotionEvent.ACTION_MOVE:
if(mode==DRAG){
Log.d(TAG,"mode=MOVE");
matrix.set(savedMatrix);
// limit pan
matrix.getValues(matrixValues);
float currentY = matrixValues[Matrix.MTRANS_Y];
float currentX = matrixValues[Matrix.MTRANS_X];
float currentScale = matrixValues[Matrix.MSCALE_X];
float currentHeight = height * currentScale;
float currentWidth = width * currentScale;
float dx = event.getX() - start.x;
float dy = event.getY() - start.y;
float newX = currentX+dx;
float newY = currentY+dy;
RectF drawingRect = new RectF(newX, newY, newX+currentWidth, newY+currentHeight);
float diffUp = Math.min(viewRect.bottom-drawingRect.bottom, viewRect.top-drawingRect.top);
float diffDown = Math.max(viewRect.bottom-drawingRect.bottom, viewRect.top-drawingRect.top);
float diffLeft = Math.min(viewRect.left-drawingRect.left, viewRect.right-drawingRect.right);
float diffRight = Math.max(viewRect.left-drawingRect.left, viewRect.right-drawingRect.right);
if(diffUp > 0){
dy +=diffUp;
}
if(diffDown < 0){
dy +=diffDown;
}
if(diffLeft> 0){
dx += diffLeft;
}
if(diffRight < 0){
dx += diffRight;
}
matrix.postTranslate(dx, dy);
}else if(mode==ZOOM){
float newDist= spacing(event);
if(newDist>10f){
matrix.set(savedMatrix);
float scale = newDist/oldDist;
Log.d(TAG,"Scale="+scale);
matrix.getValues(matrixValues);
float currentScale = matrixValues[Matrix.MSCALE_X];
Log.d(TAG,"currentScale="+currentScale);
// limit zoom
if (scale * currentScale > MAX_ZOOM) {
scale = MAX_ZOOM/currentScale;
} else if (scale * currentScale < MIN_ZOOM) {
scale = MIN_ZOOM/currentScale;
}
matrix.postScale(scale, scale, mid.x, mid.y);
}
}
break;
}
//perform the transformation
view.setImageMatrix(matrix);
return true;
}
private static float spacing(MotionEvent event){
float x = event.getX(0) - event.getX(1);
float y = event.getY(0) - event.getY(1);
return FloatMath.sqrt(x * x + y * y);
}
private static void midPoint(PointF point, MotionEvent event){
float x = event.getX(0) + event.getX(1);
float y = event.getY(0) + event.getY(1);
point.set(x/2, y/2);
}
/** Show an event in the logcat view for debugging **/
private void dumpEvent(MotionEvent event){
String names[] = {"DOWN","UP","MOVE","CANCEL","OUTSIDE","POINTER_DOWN","POINTER_UP","7?","8?","9?"};
StringBuilder sb = new StringBuilder();
int action = event.getAction();
int actionCode = action & MotionEvent.ACTION_MASK;
sb.append("event ACTION_").append(names[actionCode]);
if(actionCode==MotionEvent.ACTION_POINTER_DOWN
|| actionCode==MotionEvent.ACTION_POINTER_UP){
sb.append("pid ").append(
action >> MotionEvent.ACTION_POINTER_ID_SHIFT);
sb.append(")");
};
sb.append(" [");
for(int i=0;i < event.getPointerCount();i++){
sb.append("#").append(i);
sb.append("(pid ").append(event.getPointerId(i));
sb.append(")=").append((int) event.getX(i));
sb.append(",").append((int) event.getY(i));
if(i+1 < event.getPointerCount())
sb.append(";");
}
sb.append("]");
Log.d("DUMP", sb.toString());
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
super.onCreateOptionsMenu(menu);
menu.add(0, SHARE_ID, 0, R.string.share_id);
menu.add(0,EDIT_ID,0,R.string.edit_details);
return true;
}
@Override
public boolean onMenuItemSelected(int featureId, MenuItem item) {
switch(item.getItemId()) {
case SHARE_ID:
try{
shareImage();
}catch(Exception e){
Log.e(TAG,e.toString());
}
return true;
case EDIT_ID:
try{
Intent intent = new Intent(mContext,SnapDetails.class);
intent.putExtra(DBAdapter.KEY_ROWID,id);
startActivityForResult(intent,FishingSnapz.SNAP_EDIT);
}catch(Exception e){
Log.e(TAG,e.toString());
}
}
return super.onMenuItemSelected(featureId, item);
}
@Override
protected void onResume(){
super.onResume();
}
@Override
protected void onActivityResult (int requestCode, int resultCode, Intent data){
super.onActivityResult(requestCode, resultCode, data);
//Required by facebook single sign on - check that we are returning to activity from FB
if(data!=null){
fb.authorizeCallback(requestCode, resultCode, data);
}else{
extras = getIntent().getExtras();
id = (Long) extras.get(DBAdapter.KEY_ROWID);
//get snap details for text overlay
ArrayList<String> details = new ArrayList<String>();
details = getSnapDetails(id);
prepareSnapDetails(details);
}
}
} 「
これはb eと思われます。 – Stephen