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我想捕獲已通過攝像頭捕獲並存儲到ImageBox變量中的圖像的緯度。使用ExifInterface類,我試圖獲取圖像的緯度並將該信息顯示到LatitudeBox變量中,但是我的語法不正確,請讓我知道我做錯了什麼!下面Android獲取捕獲的圖像元數據
MainActivity.java全碼
import java.io.IOException;
import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.media.ExifInterface;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
public class MainActivity extends Activity {
//variables
Button CameraButton;
ImageView ImageBox;
EditText LatitudeBox, LongitudeBox;
String IMG = ImageBox.toString();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
CameraButton = (Button) findViewById(R.id.CameraButton);
ImageBox = (ImageView) findViewById(R.id.imageView1);
LatitudeBox = (EditText) findViewById(R.id.LatitudeBox);
LongitudeBox = (EditText) findViewById(R.id.LongitudeBox);
//Camera Button Onclick
CameraButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
Intent intent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(intent, 0);
try {
ExifInterface exif = new ExifInterface(IMG);
LongitudeBox.setText(exif.getAttribute(ExifInterface.TAG_GPS_LONGITUDE_REF)); // get longitude
LatitudeBox.setText(exif.getAttribute(ExifInterface.TAG_GPS_LATITUDE_REF)); //get latitude
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}// try catch
}// end onclick
});// end camera button onclick
}// close oncreate
//display image inside ImageBox variable using bitmap
protected void onActivityResult(int requestCode, int resultCode, Intent data)
{
if(requestCode == 0)
{
Bitmap TheImage = (Bitmap) data.getExtras().get("data");
ImageBox.setImageBitmap(TheImage);
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}// close main
應用程序現在崩潰的發射和不知道是什麼導致了它。這裏是logcat的錯誤
http://s7.postimg.org/4p67papyj/logcat1.png
activity_main.xml中
<ImageView
android:id="@+id/imageView1"
android:layout_width="250dp"
android:layout_height="200dp"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="32dp"
android:src="@drawable/ic_launcher" />
<Button
android:id="@+id/CameraButton"
android:layout_width="150dp"
android:layout_height="35dp"
android:layout_below="@+id/imageView1"
android:layout_centerHorizontal="true"
android:layout_marginTop="38dp"
android:text="@string/Camera_Button" />
<TextView
android:id="@+id/LatitudeBox"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/CameraButton"
android:layout_centerHorizontal="true"
android:layout_marginTop="16dp"
android:text="@string/LatitudeBox"
android:textColor="#ff0000"
android:textAppearance="?android:attr/textAppearanceLarge" />
<TextView
android:id="@+id/LongitudeBox"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/LatitudeBox"
android:layout_centerHorizontal="true"
android:layout_marginTop="21dp"
android:text="@string/LongitudeBox"
android:textAppearance="?android:attr/textAppearanceLarge" />
您好,感謝您回覆。我添加了你給我的行,它修復了一切,但現在應用程序只是在加載時崩潰。不知道什麼是錯的 – ssj3goku878
我編輯了主代碼以添加我已更改的內容 – ssj3goku878
如果它崩潰了,您可以使用LogCat輸出更新您的文章嗎? –