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在此先感謝您的幫助。我是Java和Android編程的初學者，所以我的第一個應用只是在拍攝照片後從照片中選取RGB值。但是，最後一個錯誤是「令牌上的語法錯誤」字符串，請刪除此令牌「。這讓我瘋狂！似乎我所有的括號都在那裏，每個語句的語法都是正確的，對於正在發生的事情有什麼想法？我使用Eclipse，如果這有所作爲，最新版本。這是完整的代碼。問題開始於評論/* SET TEXT FUNCTION TO THE FIELD USING SET TEXT METHOD*/.語法錯誤在標記「字符串」上，刪除此標記
package com.example.firstapp;
import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.Matrix;
import android.view.Menu;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.View.OnTouchListener;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;
public class MainActivity extends Activity { //1
TextView pixelcord, rgbvals;
ImageView iv;
Button btn;
@Override
public void onCreate(Bundle savedInstanceState) { //2
/* GATHER THE INFORMATION FROM THE LAYOUT TO ORGANIZE APP*/
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
/* SET ON CLICK LISTENER TO GET CLICK REPSONSE -- LAUNCH CAMERA AND TAKE PHOTO */
/* SET VARIABLES FOR USE FROM EACH VIEW */
iv = (ImageView) findViewById(R.id.imageView); /* USE IMAGE VIEW FIELD*/
pixelcord = (TextView)findViewById(R.id.pixelcord); /* USE TEXT FIELD FOR PIXEL */
rgbvals = (TextView)findViewById(R.id.rgbvals); /* USE TEXT FIELD FOR RGB VALUES*/
btn = (Button) findViewById(R.id.takePhoto);
/* SET INFORMATION OF WHAT TO DO UPON EACH CLIK*/
iv.setOnTouchListener(imgSourceOnTouchListener);
/* =====================================CAMERA BUTTON=====================================*/
btn.setOnClickListener(new OnClickListener() { //3
@Override
public void onClick(View v) { //4
Intent intent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(intent, 0);
} //*4
}); //*3
/* =======================================================================================*/
} /* END OF ON CREATE*/ //*2
/* DECLARATION OF IMG TOUCH FUNCTION*/
OnTouchListener imgSourceOnTouchListener = new OnTouchListener() { //5
@Override
public boolean onTouch(View view, MotionEvent event) { //6
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]); /* POTENTIALLY REDUNDANT*/
int y = Integer.valueOf((int)eventXY[1]);
/* SET TEXT FUNCTION TO THE FIELD USING SET TEXT METHOD*/
pixelcord.setText("X:" String.valueOf(eventX) + "/ Y:" String.valueOf(eventY));
int touchedRGB = iv.getDrawingCache().getPixel(x,y);
rgbvals.setText("Color Value" + "#" + Integer.toHexString(touchedRGB));
rgbvals.setTextColor(touchedRGB);
return true;
} //*6
}; //*5
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data)
{ //7
if(requestCode == 0)
{ //8
Bitmap theImage = (Bitmap) data.getExtras().get("data");
iv.setImageBitmap(theImage);
} //*8
} //*7
} //*1
謝謝大家！這解決了我的問題，但現在我還有一個問題。照片按鈕工作並將圖片發送到視圖，但是當我觸摸圖像時，程序崩潰而不是給我觸摸位置的RGB值。任何想法爲什麼？ – Johnathan