【Android】获取当前坐标的颜色不准确。

采集的小蜜蜂 发表于 2020-11-11 16:50

本帖最后由采集的小蜜蜂于 2020-11-11 17:46 编辑

取到的颜色不是现在我把ImageView调整到居中的颜色，而是以Imageview以左上角为坐标的颜色。
MainActivity.classpackage com.ykd.bed.activity;

import androidx.appcompat.app.AppCompatActivity;

import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Color;
import android.graphics.drawable.BitmapDrawable;
import android.media.Image;
import android.os.Bundle;
import android.util.DisplayMetrics;
import android.util.Log;
import android.view.MotionEvent;
import android.view.View;
import android.widget.ImageView;
import android.widget.RelativeLayout;
import android.widget.TextView;
import android.widget.Toast;

import com.ykd.bed.R;
import com.ykd.bed.base.BaseActivity;
import com.ykd.bed.utils.DrawView;

import org.json.JSONArray;
import org.json.JSONException;

import butterknife.BindView;

public class RGBActivity extends BaseActivity implements View.OnTouchListener, View.OnClickListener {
@BindView(R.id.iv_back)
ImageView ivBack;
@BindView(R.id.colorpan)
ImageView colorpan;
@BindView(R.id.colortext)
TextView textView;
@BindView(R.id.rgblayout)
RelativeLayout relativeLayout;
private Bitmap bitmap;

@Override
protected String getClassName() {
   return RGBActivity.class.getSimpleName();
}

@Override
protected int getViewId() {
   return R.layout.activity_r_g_b;
}

@Override
protected void initView() {
   ivBack.setOnClickListener(this);
   bitmap = ((BitmapDrawable) colorpan.getDrawable()).getBitmap();
   colorpan.setOnTouchListener(new View.OnTouchListener() {

         @Override
         public boolean onTouch(View v, MotionEvent event) {
            int x = (int) event.getX()+100;
            int y = (int) event.getY()+150;
            try{
            if (event.getAction() == MotionEvent.ACTION_UP) {
               Toast.makeText(mContext,x+"...."+y+"",Toast.LENGTH_SHORT).show();
               int color = bitmap.getPixel(x, y);
               // 如果你想做的更细致的话可以把颜色值的R G B 拿到做响应的处理
               int r = Color.red(255-color);
               int g = Color.green(255-color);
               int b = Color.blue(255-color);
               textView.setText( "r=" + r + ",g=" + g + ",b="
                        + b);
               textView.setTextColor(Color.rgb(r,g,b));
            }else if(event.getAction()==MotionEvent.ACTION_MOVE){
               int color = bitmap.getPixel(x, y);
               // 如果你想做的更细致的话可以把颜色值的R G B 拿到做响应的处理
               int r = Color.red(color);
               int g = Color.green(color);
               int b = Color.blue(color);
               textView.setText( "r=" + r + ",g=" + g + ",b="
                        + b);
            }}catch (Exception e){
               e.printStackTrace();
            }
            return true;
         }
   });
}

@Override
public boolean onTouch(View view, MotionEvent motionEvent) {
   return false;
}

@Override
public void onClick(View view) {
   switch (view.getId()){
         case R.id.iv_back:
            finish();
            break;
   }
}
}
activity_r_g_b.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/rgblayout"
android:background="@mipmap/bg">
<RelativeLayout
   android:layout_width="match_parent"
   android:layout_height="wrap_content">
   <ImageView
         android:layout_marginTop="15dp"
         android:layout_marginStart="10dp"
         android:id="@+id/iv_back"
         android:layout_centerVertical="true"
         android:src="@mipmap/setting_back"
         android:layout_width="30dp"
         android:layout_height="30dp"/>

   <TextView
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:text="@string/RGBLight"
         android:textColor="@color/apptheme"
         android:layout_centerInParent="true"
         android:textSize="20sp" />
</RelativeLayout>
<RelativeLayout
   android:layout_width="wrap_content"
   android:layout_height="wrap_content"
   android:layout_marginTop="50dp"
   android:layout_centerHorizontal="true">
<ImageView
android:id="@+id/colorpan"
android:layout_width="300dp"
android:layout_height="300dp"
android:layout_centerHorizontal="true"
android:src="@mipmap/palette"/>
</RelativeLayout>
<TextView
android:id="@+id/colortext"
android:layout_centerHorizontal="true"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="@color/white"
android:textSize="30sp"/>

</RelativeLayout>

深爱我的女孩 发表于 2020-11-11 17:12

不懂，帮顶！

采集的小蜜蜂 发表于 2020-11-11 17:45

解决了，我自己修改了它取值的坐标
package com.ykd.bed.activity;

import androidx.appcompat.app.AppCompatActivity;

import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Color;
import android.graphics.drawable.BitmapDrawable;
import android.media.Image;
import android.os.Bundle;
import android.util.DisplayMetrics;
import android.util.Log;
import android.view.MotionEvent;
import android.view.View;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;
import android.widget.TextView;
import android.widget.Toast;

import com.ykd.bed.R;
import com.ykd.bed.base.BaseActivity;
import com.ykd.bed.utils.DrawView;

import org.json.JSONArray;
import org.json.JSONException;

import butterknife.BindView;

public class RGBActivity extends BaseActivity implements View.OnTouchListener, View.OnClickListener {
@BindView(R.id.iv_back)
ImageView ivBack;
@BindView(R.id.colorpan)
ImageView colorpan;
@BindView(R.id.colortext)
TextView textView;
@BindView(R.id.rgblayout)
RelativeLayout relativeLayout;
private Bitmap bitmap;

@Override
protected String getClassName() {
   return RGBActivity.class.getSimpleName();
}

@Override
protected int getViewId() {
   return R.layout.activity_r_g_b;
}

@Override
protected void initView() {
   ivBack.setOnClickListener(this);
   bitmap = ((BitmapDrawable) colorpan.getDrawable()).getBitmap();
   colorpan.setOnTouchListener(new View.OnTouchListener() {

         @Override
         public boolean onTouch(View v, MotionEvent event) {
            int x = (int) event.getX()+100;
            int y = (int) event.getY()+150;
            try{
            if (event.getAction() == MotionEvent.ACTION_UP) {
               int color = bitmap.getPixel(x-100, y-150);
               // 如果你想做的更细致的话可以把颜色值的R G B 拿到做响应的处理
               int r = Color.red(color);
               int g = Color.green(color);
               int b = Color.blue(color);

               textView.setText( "r=" + r + ",g=" + g + ",b="
                        + b);
               textView.setTextColor(Color.rgb(r,g,b));
            }else if(event.getAction()==MotionEvent.ACTION_MOVE){
               int color = bitmap.getPixel(x-100, y-150);
               // 如果你想做的更细致的话可以把颜色值的R G B 拿到做响应的处理
               int r = Color.red(color);
               int g = Color.green(color);
               int b = Color.blue(color);
               textView.setText( "r=" + r + ",g=" + g + ",b="
                        + b);
            }}catch (Exception e){
               e.printStackTrace();
            }
            return true;
         }
   });
}

@Override
public boolean onTouch(View view, MotionEvent motionEvent) {
   return false;
}

@Override
public void onClick(View view) {
   switch (view.getId()){
         case R.id.iv_back:
            finish();
            break;
   }
}
}

yzydys 发表于 2020-11-11 18:33

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【Android】获取当前坐标的颜色不准确。