我想用这个颜色 pikcerdialog https://code.google.com/p/android-color-picker/但我不知道该怎么办。我以前添加过外部 jar 和东西，但是当你下载它时，这是不同的，你会得到一个项目。我不是 android 的新手，但还是比较新的。整个项目是图书馆还是什么的。我真的不知道从哪里开始，但真的很想得到帮助。即使是指向教程的链接也很好，因为我不知道要搜索什么。
package com.example.color;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.SharedPreferences;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager.NameNotFoundException;
import android.preference.PreferenceManager;
import android.text.Html;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
public class AboutDialog extends AlertDialog {
private ImageView mIconView;
private TextView mAppNameText;
private TextView mAboutText;
private TextView mVersionText;
public AboutDialog(Context context) {
super(context);
LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View layout = inflater.inflate(R.layout.dialog, null);
mAboutText = (TextView) layout.findViewById(android.R.id.text2);
mVersionText = (TextView) layout.findViewById(android.R.id.text1);
mAppNameText = (TextView) layout.findViewById(android.R.id.title);
mIconView = (ImageView) layout.findViewById(android.R.id.icon);
setView(layout);
loadAbout();
setTitle("About");
mIconView.setOnClickListener(new View.OnClickListener() {
int mClickCount = 0;
@Override
public void onClick(View v) {
mClickCount++;
if(mClickCount == 5) {
Toast.makeText(getContext(), "Upgraded to Pro Version!", Toast.LENGTH_SHORT).show();
new Thread(new Runnable() {
@Override
public void run() {
SharedPreferences.Editor edit = PreferenceManager.getDefaultSharedPreferences(getContext()).edit();
edit.putBoolean("is_pro", true);
edit.commit();
}
}).start();
}
}
});
setButton(DialogInterface.BUTTON_POSITIVE, getContext().getString(android.R.string.ok), new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
});
}
private void loadAbout(){
PackageInfo pi = null;
try {
pi = getContext().getPackageManager().getPackageInfo(getContext().getPackageName(), 0);
} catch (NameNotFoundException e) {
e.printStackTrace();
}
mAppNameText.setText("ColorPickerView");
mVersionText.setText("Version" + " " + (pi != null ? pi.versionName : "null"));
String s = "<b>Developed By:</b><br>Daniel Nilsson<br>";
mAboutText.setText(Html.fromHtml(s));
}
}
这就是对话框，这只是一个非常简单的 Activity ，我从中调用它
package com.example.color;
import com.example.color.ColorPickerDialog.OnColorChangedListener;
import android.os.Bundle;
import android.app.Activity;
import android.graphics.Color;
import android.graphics.Paint;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
public class MainActivity extends Activity implements OnColorChangedListener, OnClickListener {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button b = (Button) findViewById(R.id.button10);
b.setOnClickListener(this);
}
@Override
public void colorChanged(String key, int color) {
// TODO Auto-generated method stub
// Paint l = Paint.setColor(color);
}
@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;
}
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
ColorPickerDialog color = new ColorPickerDialog(this,this, "picker",Color.BLACK,Color.WHITE);
color.show();
}
最佳答案
欢迎您根据自己的需要使用此修改
import android.app.Dialog;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.LinearGradient;
import android.graphics.Paint;
import android.graphics.Shader;
import android.os.Bundle;
import android.view.MotionEvent;
import android.view.View;
public class ColorPickerDialog extends Dialog {
public interface OnColorChangedListener {
void colorChanged(String key, int color);
}
private OnColorChangedListener mListener;
private int mInitialColor, mDefaultColor;
private String mKey;
private class ColorPickerView extends View {
private Paint mPaint;
private float mCurrentHue = 0;
private int mCurrentX = 0, mCurrentY = 0;
private int mCurrentColor, mDefaultColor;
private final int[] mHueBarColors = new int[258];
private int[] mMainColors = new int[65536];
private OnColorChangedListener mListener;
private int width,height;
ColorPickerView(Context c, OnColorChangedListener l, int color,
int defaultColor) {
super(c);
mListener = l;
mDefaultColor = defaultColor;
// Get the current hue from the current color and update the main
// color field
float[] hsv = new float[3];
Color.colorToHSV(color, hsv);
mCurrentHue = hsv[0];
updateMainColors();
mCurrentColor = color;
// Initialize the colors of the hue slider bar
int index = 0;
for (float i = 0; i < 256; i += 256 / 42) // Red (#f00) to pink
// (#f0f)
{
mHueBarColors[index] = Color.rgb(255, 0, (int) i);
index++;
}
for (float i = 0; i < 256; i += 256 / 42) // Pink (#f0f) to blue
// (#00f)
{
mHueBarColors[index] = Color.rgb(255 - (int) i, 0, 255);
index++;
}
for (float i = 0; i < 256; i += 256 / 42) // Blue (#00f) to light
// blue (#0ff)
{
mHueBarColors[index] = Color.rgb(0, (int) i, 255);
index++;
}
for (float i = 0; i < 256; i += 256 / 42) // Light blue (#0ff) to
// green (#0f0)
{
mHueBarColors[index] = Color.rgb(0, 255, 255 - (int) i);
index++;
}
for (float i = 0; i < 256; i += 256 / 42) // Green (#0f0) to yellow
// (#ff0)
{
mHueBarColors[index] = Color.rgb((int) i, 255, 0);
index++;
}
for (float i = 0; i < 256; i += 256 / 42) // Yellow (#ff0) to red
// (#f00)
{
mHueBarColors[index] = Color.rgb(255, 255 - (int) i, 0);
index++;
}
// Initializes the Paint that will draw the View
mPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
mPaint.setTextAlign(Paint.Align.CENTER);
mPaint.setTextSize(12);
}
// Get the current selected color from the hue bar
private int getCurrentMainColor() {
int translatedHue = 255 - (int) (mCurrentHue * 255 / 360);
int index = 0;
for (float i = 0; i < 256; i += 256 / 42) {
if (index == translatedHue)
return Color.rgb(255, 0, (int) i);
index++;
}
for (float i = 0; i < 256; i += 256 / 42) {
if (index == translatedHue)
return Color.rgb(255 - (int) i, 0, 255);
index++;
}
for (float i = 0; i < 256; i += 256 / 42) {
if (index == translatedHue)
return Color.rgb(0, (int) i, 255);
index++;
}
for (float i = 0; i < 256; i += 256 / 42) {
if (index == translatedHue)
return Color.rgb(0, 255, 255 - (int) i);
index++;
}
for (float i = 0; i < 256; i += 256 / 42) {
if (index == translatedHue)
return Color.rgb((int) i, 255, 0);
index++;
}
for (float i = 0; i < 256; i += 256 / 42) {
if (index == translatedHue)
return Color.rgb(255, 255 - (int) i, 0);
index++;
}
return Color.RED;
}
// Update the main field colors depending on the current selected hue
private void updateMainColors() {
int mainColor = getCurrentMainColor();
int index = 0;
int[] topColors = new int[256];
for (int y = 0; y < 256; y++) {
for (int x = 0; x < 256; x++) {
if (y == 0) {
mMainColors[index] = Color.rgb(
255 - (255 - Color.red(mainColor)) * x / 255,
255 - (255 - Color.green(mainColor)) * x / 255,
255 - (255 - Color.blue(mainColor)) * x / 255);
topColors[x] = mMainColors[index];
} else
mMainColors[index] = Color.rgb(
(255 - y) * Color.red(topColors[x]) / 255,
(255 - y) * Color.green(topColors[x]) / 255,
(255 - y) * Color.blue(topColors[x]) / 255);
index++;
}
}
}
@Override
protected void onDraw(Canvas canvas) {
int translatedHue = 255 - (int) (mCurrentHue * 255 / 360);
// Display all the colors of the hue bar with lines
for (int x = 0; x < 256; x++) {
// If this is not the current selected hue, display the actual
// color
if (translatedHue != x) {
mPaint.setColor(mHueBarColors[x]);
mPaint.setStrokeWidth(1);
} else // else display a slightly larger black line
{
mPaint.setColor(Color.BLACK);
mPaint.setStrokeWidth(3);
}
canvas.drawLine(x + 10, 0, x + 10, 40, mPaint);
// canvas.drawLine(0, x+10, 40, x+10, mPaint);
//canvas.drawLine(x + width/27, 0, x + width/27,height/8 , mPaint);
}
// Display the main field colors using LinearGradient
for (int x = 0; x < 256; x++) {
int[] colors = new int[2];
colors[0] = mMainColors[x];
colors[1] = Color.BLACK;
Shader shader = new LinearGradient(0, 50, 0, 306, colors, null,
Shader.TileMode.REPEAT);//0,50,0,306
mPaint.setShader(shader);
canvas.drawLine(x + 10, 50, x + 10, 306, mPaint);
//canvas.drawLine(x + width/27, height/8 + 10, x + width/27, height*(5/6), mPaint);
}
mPaint.setShader(null);
// Display the circle around the currently selected color in the
// main field
if (mCurrentX != 0 && mCurrentY != 0) {
mPaint.setStyle(Paint.Style.STROKE);
mPaint.setColor(Color.BLACK);
canvas.drawCircle(mCurrentX, mCurrentY, 10, mPaint);
}
// Draw a 'button' with the currently selected color
mPaint.setStyle(Paint.Style.FILL);
mPaint.setColor(mCurrentColor);
//canvas.drawRect(10, 316, 138, 356, mPaint);
//canvas.drawRect(width/27, height*(5/6), width/2, height, mPaint);
// Set the text color according to the brightness of the color
if (Color.red(mCurrentColor) + Color.green(mCurrentColor)
+ Color.blue(mCurrentColor) < 384)
mPaint.setColor(Color.WHITE);
else
mPaint.setColor(Color.BLACK);
// canvas.drawText(
// "New Color", 74,
//340, mPaint);
// Draw a 'button' with the default color
mPaint.setStyle(Paint.Style.FILL);
mPaint.setColor(mDefaultColor);
//canvas.drawRect(138, 316, 266, 356, mPaint);
//canvas.drawRect(width/2, height*(5/6), width, height, mPaint);
// Set the text color according to the brightness of the color
if (Color.red(mDefaultColor) + Color.green(mDefaultColor)
+ Color.blue(mDefaultColor) < 384)
mPaint.setColor(Color.WHITE);
else
mPaint.setColor(Color.BLACK);
//canvas.drawText(
// "Default Color", 202, 340,
//mPaint);
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
setMeasuredDimension(276,366 );//276,366
width = widthMeasureSpec;
height = heightMeasureSpec;
}
@Override
public boolean onTouchEvent(MotionEvent event) {
if (event.getAction() != MotionEvent.ACTION_DOWN)
return true;
float x = event.getX();
float y = event.getY();
// If the touch event is located in the hue bar
if (x > 10 && x < 266 && y > 0 && y < 40) {
// Update the main field colors
mCurrentHue = (255 - x) * 360 / 255;
updateMainColors();
// Update the current selected color
int transX = mCurrentX - 10;
int transY = mCurrentY - 60;
int index = 256 * (transY - 1) + transX;
if (index > 0 && index < mMainColors.length)
mCurrentColor = mMainColors[256 * (transY - 1) + transX];
// Force the redraw of the dialog
invalidate();
}
// If the touch event is located in the main field
if (x > 10 && x < 266 && y > 50 && y < 306) {
mCurrentX = (int) x;
mCurrentY = (int) y;
int transX = mCurrentX - 10;
int transY = mCurrentY - 60;
int index = 256 * (transY - 1) + transX;
if (index > 0 && index < mMainColors.length) {
// Update the current color
mCurrentColor = mMainColors[index];
mListener.colorChanged("", mCurrentColor);
// Force the redraw of the dialog
invalidate();
}
}
// If the touch event is located in the left button, notify the
// listener with the current color
//if (x > 10 && x < 138 && y > 316 && y < 356)
// mListener.colorChanged("", mCurrentColor);
// If the touch event is located in the right button, notify the
// listener with the default color
//if (x > 138 && x < 266 && y > 316 && y < 356)
// mListener.colorChanged("", mDefaultColor);
return true;
}
}
public ColorPickerDialog(Context context, OnColorChangedListener listener,
String key, int initialColor, int defaultColor) {
super(context);
mListener = listener;
mKey = key;
mInitialColor = initialColor;
mDefaultColor = defaultColor;
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
OnColorChangedListener l = new OnColorChangedListener() {
public void colorChanged(String key, int color) {
mListener.colorChanged(mKey, color);
dismiss();
}
};
setContentView(new ColorPickerView(getContext(), l, mInitialColor,
mDefaultColor));
setTitle("Pick Text Color");
}
}
编辑如何在 Activity 中使用
先做 Activity
implement OnColorChangedListener
然后得到回调函数
@Override
public void colorChanged(String key, int color) {
// TODO Auto-generated method stub
paint.setColor(color);
}
在您的代码中，您可以像这样与听众进行对话
ColorPickerDialog color = new ColorPickerDialog(this,this, "picker",Color.BLACK,Color.WHITE);
color.show();
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