我在Android工作室工作，我正在尝试从手机目录中导入照片并将其放在ImageView上。
在我的第一个活动中，我尝试使用相机保存照片，并尝试从照片中保存URI。那是在工作。
在另一项活动中，我试图导入该URI但我的ImageView没有改变。编译器从照片中看到了位置，所以我认为是有效的，但是imageview无法导入照片......
你可以帮帮我吗？public class PictureConfirmation extends Activity {
ImageButton use;
ImageButton retake;
TextView usetxt;
TextView retaketxt;
ImageView pictaken;
String pic;
File picfile;
Matrix matrix;
String pic2;
Bitmap bitmap;
public Bitmap rotatedbitmap;
ImageButton scan;
ImageView teeth;
TextView scantxt;
public String colorRGB;
TextView canceltxt;
Uri ImgUri;
public float ax;
public float ay;
int Rc, Gc, Bc;
public int checkcamera=0;
TextView colortxt;
@Override
protected void onCreate(Bundle savedInstance) {
final Typeface bariol_font = Typeface.createFromAsset(getAssets(), "Bariol_Bold.otf");
//going full screen
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
super.onCreate(savedInstance);
setContentView(R.layout.picture_confirmation);
final String PREF_NAME = "Link";
String defaultValue = "default string";
Preferences prefs = Preferences.userNodeForPackage(com.example.newrosoft1.dentafy.MainMenuActivity.class);
String propertyValue = prefs.get(PREF_NAME, defaultValue); // "a string"
//pic = new MainMenuActivity().getpath();
pic2=propertyValue;
pic=propertyValue;
Log.d("valoare este %@" ,pic.toString());
//bitmap =BitmapFactory.decodeFile(pic);
// Uri imgUri=Uri.parse(pic);
//.setImageURI(imgUri);
use = (ImageButton) findViewById(R.id.usebtnid);
retake = (ImageButton) findViewById(R.id.retakebtnid);
retaketxt = (TextView) findViewById(R.id.retaketxtid);
retaketxt.setTypeface(bariol_font);
usetxt = (TextView) findViewById(R.id.usetextid);
usetxt.setTypeface(bariol_font);
pictaken = (ImageView) findViewById(R.id.pictakenid);
//pictaken.setImageBitmap(bitmap);
Uri imgUri=Uri.parse(pic);
pictaken.setImageURI(null);
pictaken.setImageURI(imgUri);
try {
pictaken.setImageDrawable(Drawable.createFromStream(
getContentResolver().openInputStream(imgUri),
null));
} catch (FileNotFoundException e) {
e.printStackTrace();
}
final AlertDialog.Builder alertdialog = new AlertDialog.Builder(this);
alertdialog.setTitle("Confirmation");
alertdialog.setMessage("Are you sure this is the correct picture?\nPlease note that you have a limited number of scans");
alertdialog.setPositiveButton("YES", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
setContentView(R.layout.processing);
Runnable r = new Runnable() {
@Override
public void run() {
setContentView(R.layout.scan_teeth_finished);
TextView done = (TextView) findViewById(R.id.donetxtid);
done.setTypeface(bariol_font);
colortxt = (TextView) findViewById(R.id.teethcolortxtid);
colortxt.setTypeface(bariol_font);
teeth = (ImageView) findViewById(R.id.teethimg);
//teeth.setImageBitmap(bitmap);
Uri imgUri=Uri.parse(pic);
teeth.setImageURI(null);
teeth.setImageURI(imgUri);
try {
teeth.setImageDrawable(Drawable.createFromStream(
getContentResolver().openInputStream(imgUri),
null));
} catch (FileNotFoundException e) {
e.printStackTrace();
}
teeth.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View view, MotionEvent event) {
float eventX = event.getX();
float eventY = event.getY();
float[] eventXY = new float[]{eventX, eventY};
Matrix invertMatrix = new Matrix();
((ImageView) view).getImageMatrix().invert(invertMatrix);
invertMatrix.mapPoints(eventXY);
int x = Integer.valueOf((int) eventXY[0]);
int y = Integer.valueOf((int) eventXY[1]);
Drawable imgDrawable = teeth.getDrawable();
bitmap = ((BitmapDrawable) imgDrawable).getBitmap();
//Limit x, y range within bitmap
if (x < 0) {
x = 0;
} else if (x > (bitmap.getWidth() - 1)) {
x = bitmap.getWidth() - 1;
ax = x;
}
if (y < 0) {
y = 0;
} else if (y > (bitmap.getHeight() - 1)) {
y = bitmap.getHeight() - 1;
ay = y;
}
int touchedRGB = bitmap.getPixel(x, y);
int[] areapixels = new int[bitmap.getWidth() * bitmap.getHeight()];
int touchedAreaRGB;
try {
bitmap.getPixels(areapixels, 0, bitmap.getWidth(), x, y, 25, 25); //pixel area to scan
} catch (ArrayIndexOutOfBoundsException arrayindexoutofbounds) {
Toast.makeText(getApplicationContext(), "index out of bounds exception",
Toast.LENGTH_SHORT).show();
} catch (IllegalArgumentException illegalargumentexception) {
}
int total = 0;
for (int i = 0; i < areapixels.length; i++) {
if (areapixels[i] != 0)
{
Rc += (areapixels[i] >> 16) & 0xff;
Gc += (areapixels[i] >> 8) & 0xff;
Bc += (areapixels[i]) & 0xff;
total++;
}
}
if (Rc != 0 || Gc != 0 || Bc != 0) {
Rc /= total;
Gc /= total;
Bc /= total;
}
touchedAreaRGB = 0xff000000 | (Rc << 16) | (Gc << 8) | Bc;
int avrgColor = (Gc - Bc) * 10 / 2;
int yellow = 12229738;
int white = 16777215;
int value = ((touchedRGB - yellow) * 100) / (white - yellow);
int value2 = ((touchedRGB - yellow) * 10) / (white - yellow);
Log.d("value: ", "asd100 " + value);
Log.d("value: ", "asd10 " + value2);
colorRGB = "could not find color code, tap again " + value2;
if (value2 < 32)
colorRGB = "Selected tooth color is:A1";
switch (value2) {
case -33:
colorRGB = "Selected tooth color is:A1 ";
break;
case -32:
colorRGB = "Selected tooth color is:B1";
break;
case -35:
colorRGB = "Selected tooth color is:A2 ";
break;
case -36:
colorRGB = "Selected tooth color is:A3 ";
break;
case -34:
colorRGB = "Selected tooth color is:B2 ";
break;
case -38:
colorRGB = "Selected tooth color is:D2 ";
break;
case -37:
colorRGB = "Selected tooth color is:D3 ";
break;
case -40:
colorRGB = "Selected tooth color is:D4 ";
break;
}
colortxt.setText(colorRGB);
if (Gc < Bc || Gc < 100) {
// Toast.makeText(getApplicationContext(), "Could not get color code, make sure you tap on tooth", Toast.LENGTH_SHORT).show();
}
//colorRGB.setText("Selected tooth color is:C1" + value2);
Rc = 0;
Bc = 0;
Gc = 0;
total = 0;
return true;
}
});
done.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
startActivity(new Intent(PictureConfirmation.this, MainMenuActivity.class));
}
});
}
};
Handler h = new Handler();
h.postDelayed(r, 2000);
}
});
alertdialog.setNegativeButton("NO", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
//do nothing
}
});
alertdialog.create();
//pictaken.setImageBitmap(bitmap);
//Uri imgUri=Uri.parse(pic);
pictaken.setImageURI(null);
pictaken.setImageURI(imgUri);
retake.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// startActivity(new Intent(PictureConfirmation.this, CameraMainActivity.class));
}
});
use.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
setContentView(R.layout.scan_teeth_start);
scan = (ImageButton) findViewById(R.id.scanbtnid);
teeth = (ImageView) findViewById(R.id.teethimageid);
scantxt = (TextView) findViewById(R.id.startscantxtid);
scantxt.setTypeface(bariol_font);
canceltxt = (TextView) findViewById(R.id.canceltxtid);
canceltxt.setTypeface(bariol_font);
//teeth.setImageBitmap(bitmap);
Uri imgUri2=Uri.parse(pic);
teeth.setImageURI(null);
teeth.setImageURI(imgUri2);
canceltxt.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
startActivity(new Intent(PictureConfirmation.this, MainMenuActivity.class));
}
});
// matrix.postRotate(270);
// bitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true); // rotating bitmap
scan.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
alertdialog.show();
}
});
}
});
}
}
答案 0 :(得分：0)
06-24 15：08：30.868 13184-13184 / com.example.newrosoft1.dentafy D / valoare este％@：file：/// file％3A / storage / emulated / 0 / Android / data / com。 example.newrosoft1.dentafy /文件/图片/ JPEG_20160624_150829_558130986.jpg 06-24 15：08：30.868 13184-13184 / com.example.newrosoft1.dentafy D / valoare 2 este％@：file：///file%3A/storage/emulated/0/Android/data/com.example。 newrosoft1.dentafy /文件/图片/ JPEG_20160624_150829_558130986.jpg 06-24 15：08：30.948 13184-13184 / com.example.newrosoft1.dentafy D / valoare este％@：file：///file%3A/storage/emulated/0/Android/data/com.example.newrosoft1 .dentafy /文件/图片/ JPEG_20160624_150829_558130986.jpg 06-24 15：08：30.948 13184-13184 / com.example.newrosoft1.dentafy D / valoare 2 este％@：file：///file%3A/storage/emulated/0/Android/data/com.example。 newrosoft1.dentafy /文件/图片/ JPEG_20160624_150829_558130986.jpg
和LOGCAT错误： 06-24 15：08：34.712 13184-13184 / com.example.newrosoft1.dentafy E / ViewRootImpl：sendUserActionEvent（）mView == null
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@mipmap/background2"
android:paddingTop="97dp">
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_marginTop="0dp">
<ImageView
android:layout_width="fill_parent"
android:layout_height="250dp"
android:id="@+id/pictakenid"
android:layout_alignParentBottom="true"
android:scaleType="centerCrop"
android:layout_alignParentTop="true" />
<ImageButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/usebtnid"
android:src="@drawable/use"
android:layout_marginBottom="46dp"
android:background="@android:color/transparent"
android:layout_marginRight="15dp"
android:layout_alignParentBottom="true"
android:layout_alignParentStart="true"
android:layout_marginStart="52dp" />
<ImageButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/retakebtnid"
android:src="@drawable/retake2"
android:background="@android:color/transparent"
android:layout_alignTop="@+id/usebtnid"
android:layout_alignParentEnd="true"
android:layout_marginEnd="31dp" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="USE"
android:id="@+id/usetextid"
android:textSize="23dp"
android:textColor="#ffffff"
android:textAlignment="center"
android:contextClickable="false"
android:layout_marginBottom="44dp"
android:layout_alignBottom="@+id/usebtnid"
android:layout_alignStart="@+id/usebtnid"
android:layout_marginStart="37dp" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="RETAKE"
android:id="@+id/retaketxtid"
android:textSize="23dp"
android:textColor="#ffffff"
android:layout_marginRight="18dp"
android:layout_alignTop="@+id/usetextid"
android:layout_alignEnd="@+id/retakebtnid" />
</RelativeLayout>
</LinearLayout>
这里我创建了文件：
String mCurrentPhotoPath;
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();
Uri auxPath=getU(image);
Preferences prefs = Preferences.userNodeForPackage(com.example.newrosoft1.dentafy.MainMenuActivity.class);
// Preference key name
final String PREF_NAME = "Link";
// Set the value of the preference
String newValue = auxPath.toString();
prefs.put(PREF_NAME, newValue);
// Get the value of the preference;
// default value is returned if the preference does not exist
return image;
}
public Uri getU(File u){
String x;
x=getpath();
File f = new File (x);
Uri imageUri = Uri.fromFile(f);
return imageUri;
}
public String getpath(){
return mCurrentPhotoPath;
}
}