package com.droi.mjpet.ryChat;
import android.app.Activity;
import android.app.Dialog;
import android.content.Context;
import android.text.TextUtils;
import android.view.KeyEvent;
import android.view.Window;
import android.view.WindowManager;
import android.widget.LinearLayout.LayoutParams;
import android.widget.TextView;
import com.droi.mjpet.R;
public class LoadDialog extends Dialog {
/**
* LoadDialog
*/
private static LoadDialog loadDialog;
/**
* canNotCancel, the mDialogTextView dimiss or undimiss flag
*/
private boolean canNotCancel;
/**
* if the mDialogTextView don't dimiss, what is the tips.
*/
private String tipMsg;
private TextView mShowMessage;
/**
* the LoadDialog constructor
*
* @param ctx Context
* @param canNotCancel boolean
* @param tipMsg String
*/
public LoadDialog(final Context ctx, boolean canNotCancel, String tipMsg) {
super(ctx);
this.canNotCancel = canNotCancel;
this.tipMsg = tipMsg;
this.getContext().setTheme(android.R.style.Theme_InputMethod);
setContentView(R.layout.layout_dialog_loading);
if (!TextUtils.isEmpty(this.tipMsg)) {
mShowMessage = (TextView) findViewById(R.id.show_message);
mShowMessage.setText(this.tipMsg);
}
Window window = getWindow();
WindowManager.LayoutParams attributesParams = window.getAttributes();
attributesParams.flags = WindowManager.LayoutParams.FLAG_DIM_BEHIND;
attributesParams.dimAmount = 0.5f;
window.setAttributes(attributesParams);
window.setLayout(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK) {
if (canNotCancel) {
NToast.shortToast(getContext(), tipMsg);
return true;
}
}
return super.onKeyDown(keyCode, event);
}
/**
* show the mDialogTextView
*
* @param context
*/
public static void show(Context context) {
show(context, null, false);
}
/**
* show the mDialogTextView
*
* @param context Context
* @param message String
*/
public static void show(Context context, String message) {
show(context, message, false);
}
/**
* show the mDialogTextView
*
* @param context Context
* @param message String, show the message to user when isCancel is true.
* @param isCancel boolean, true is can't dimiss，false is can dimiss
*/
private static void show(Context context, String message, boolean isCancel) {
if (context instanceof Activity) {
if (((Activity) context).isFinishing()) {
return;
}
}
if (loadDialog != null && loadDialog.isShowing()) {
return;
}
loadDialog = new LoadDialog(context, isCancel, message);
loadDialog.show();
}
/**
* dismiss the mDialogTextView
*/
public static void dismiss(Context context) {
try {
if (context instanceof Activity) {
if (((Activity) context).isFinishing()) {
loadDialog = null;
return;
}
}
if (loadDialog != null && loadDialog.isShowing()) {
Context loadContext = loadDialog.getContext();
if (loadContext != null && loadContext instanceof Activity) {
if (((Activity) loadContext).isFinishing()) {
loadDialog = null;
return;
}
}
loadDialog.dismiss();
loadDialog = null;
}
} catch (Exception e) {
e.printStackTrace();
loadDialog = null;
}
}
}
package com.droi.mjpet.ryChat;
import android.annotation.TargetApi;
import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.Paint.Style;
import android.graphics.RectF;
import android.os.Build;
import android.os.Parcel;
import android.os.Parcelable;
import android.os.SystemClock;
import android.provider.Settings;
import android.util.AttributeSet;
import android.util.DisplayMetrics;
import android.util.TypedValue;
import android.view.View;
import com.droi.mjpet.R;
/**
* A Material style progress wheel, compatible up to 2.2.
* Todd Davies' Progress Wheel https://github.com/Todd-Davies/ProgressWheel
* https://github.com/pnikosis/materialish-progress
* @author Nico Hormazábal
* <p/>
* Licensed under the Apache License 2.0 license see:
* http://www.apache.org/licenses/LICENSE-2.0
*/
public class ProgressWheel extends View {
private static final String TAG = ProgressWheel.class.getSimpleName();
private final int barLength = 16;
private final int barMaxLength = 270;
private final long pauseGrowingTime = 200;
/**
* *********
* DEFAULTS *
* **********
*/
//Sizes (with defaults in DP)
private int circleRadius = 28;
private int barWidth = 4;
private int rimWidth = 4;
private boolean fillRadius = false;
private double timeStartGrowing = 0;
private double barSpinCycleTime = 460;
private float barExtraLength = 0;
private boolean barGrowingFromFront = true;
private long pausedTimeWithoutGrowing = 0;
//Colors (with defaults)
private int barColor = 0xAA000000;
private int rimColor = 0x00FFFFFF;
//Paints
private Paint barPaint = new Paint();
private Paint rimPaint = new Paint();
//Rectangles
private RectF circleBounds = new RectF();
//Animation
//The amount of degrees per second
private float spinSpeed = 230.0f;
//private float spinSpeed = 120.0f;
// The last time the spinner was animated
private long lastTimeAnimated = 0;
private boolean linearProgress;
private float mProgress = 0.0f;
private float mTargetProgress = 0.0f;
private boolean isSpinning = false;
private ProgressCallback callback;
private boolean shouldAnimate;
/**
* The constructor for the ProgressWheel
*/
public ProgressWheel(Context context, AttributeSet attrs) {
super(context, attrs);
parseAttributes(context.obtainStyledAttributes(attrs, R.styleable.ProgressWheel));
setAnimationEnabled();
}
/**
* The constructor for the ProgressWheel
*/
public ProgressWheel(Context context) {
super(context);
setAnimationEnabled();
}
@TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1) private void setAnimationEnabled() {
int currentApiVersion = Build.VERSION.SDK_INT;
float animationValue;
if (currentApiVersion >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
animationValue = Settings.Global.getFloat(getContext().getContentResolver(),
Settings.Global.ANIMATOR_DURATION_SCALE, 1);
} else {
animationValue = Settings.System.getFloat(getContext().getContentResolver(),
Settings.System.ANIMATOR_DURATION_SCALE, 1);
}
shouldAnimate = animationValue != 0;
}
//----------------------------------
//Setting up stuff
//----------------------------------
@Override protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
int viewWidth = circleRadius + this.getPaddingLeft() + this.getPaddingRight();
int viewHeight = circleRadius + this.getPaddingTop() + this.getPaddingBottom();
int widthMode = MeasureSpec.getMode(widthMeasureSpec);
int widthSize = MeasureSpec.getSize(widthMeasureSpec);
int heightMode = MeasureSpec.getMode(heightMeasureSpec);
int heightSize = MeasureSpec.getSize(heightMeasureSpec);
int width;
int height;
//Measure Width
if (widthMode == MeasureSpec.EXACTLY) {
//Must be this size
width = widthSize;
} else if (widthMode == MeasureSpec.AT_MOST) {
//Can't be bigger than...
width = Math.min(viewWidth, widthSize);
} else {
//Be whatever you want
width = viewWidth;
}
//Measure Height
if (heightMode == MeasureSpec.EXACTLY || widthMode == MeasureSpec.EXACTLY) {
//Must be this size
height = heightSize;
} else if (heightMode == MeasureSpec.AT_MOST) {
//Can't be bigger than...
height = Math.min(viewHeight, heightSize);
} else {
//Be whatever you want
height = viewHeight;
}
setMeasuredDimension(width, height);
}
/**
* Use onSizeChanged instead of onAttachedToWindow to get the dimensions of the view,
* because this method is called after measuring the dimensions of MATCH_PARENT & WRAP_CONTENT.
* Use this dimensions to setup the bounds and paints.
*/
@Override protected void onSizeChanged(int w, int h, int oldw, int oldh) {
super.onSizeChanged(w, h, oldw, oldh);
setupBounds(w, h);
setupPaints();
invalidate();
}
/**
* Set the properties of the paints we're using to
* draw the progress wheel
*/
private void setupPaints() {
barPaint.setColor(barColor);
barPaint.setAntiAlias(true);
barPaint.setStyle(Style.STROKE);
barPaint.setStrokeWidth(barWidth);
rimPaint.setColor(rimColor);
rimPaint.setAntiAlias(true);
rimPaint.setStyle(Style.STROKE);
rimPaint.setStrokeWidth(rimWidth);
}
/**
* Set the bounds of the component
*/
private void setupBounds(int layout_width, int layout_height) {
int paddingTop = getPaddingTop();
int paddingBottom = getPaddingBottom();
int paddingLeft = getPaddingLeft();
int paddingRight = getPaddingRight();
if (!fillRadius) {
// Width should equal to Height, find the min value to setup the circle
int minValue = Math.min(layout_width - paddingLeft - paddingRight,
layout_height - paddingBottom - paddingTop);
int circleDiameter = Math.min(minValue, circleRadius * 2 - barWidth * 2);
// Calc the Offset if needed for centering the wheel in the available space
int xOffset = (layout_width - paddingLeft - paddingRight - circleDiameter) / 2 + paddingLeft;
int yOffset = (layout_height - paddingTop - paddingBottom - circleDiameter) / 2 + paddingTop;
circleBounds =
new RectF(xOffset + barWidth, yOffset + barWidth, xOffset + circleDiameter - barWidth,
yOffset + circleDiameter - barWidth);
} else {
circleBounds = new RectF(paddingLeft + barWidth, paddingTop + barWidth,
layout_width - paddingRight - barWidth, layout_height - paddingBottom - barWidth);
}
}
/**
* Parse the attributes passed to the view from the XML
*
* @param a the attributes to parse
*/
private void parseAttributes(TypedArray a) {
// We transform the default values from DIP to pixels
DisplayMetrics metrics = getContext().getResources().getDisplayMetrics();
barWidth = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, barWidth, metrics);
rimWidth = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, rimWidth, metrics);
circleRadius =
(int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, circleRadius, metrics);
circleRadius =
(int) a.getDimension(R.styleable.ProgressWheel_matProg_circleRadius, circleRadius);
fillRadius = a.getBoolean(R.styleable.ProgressWheel_matProg_fillRadius, false);
barWidth = (int) a.getDimension(R.styleable.ProgressWheel_matProg_barWidth, barWidth);
rimWidth = (int) a.getDimension(R.styleable.ProgressWheel_matProg_rimWidth, rimWidth);
float baseSpinSpeed =
a.getFloat(R
.styleable.ProgressWheel_matProg_spinSpeed, spinSpeed / 360.0f);
spinSpeed = baseSpinSpeed * 360;
barSpinCycleTime =
a.getInt(R.styleable.ProgressWheel_matProg_barSpinCycleTime, (int) barSpinCycleTime);
barColor = a.getColor(R.styleable.ProgressWheel_matProg_barColor, barColor);
rimColor = a.getColor(R.styleable.ProgressWheel_matProg_rimColor, rimColor);
linearProgress = a.getBoolean(R.styleable.ProgressWheel_matProg_linearProgress, false);
if (a.getBoolean(R.styleable.ProgressWheel_matProg_progressIndeterminate, false)) {
spin();
}
// Recycle
a.recycle();
}
public void setCallback(ProgressCallback progressCallback) {
callback = progressCallback;
if (!isSpinning) {
runCallback();
}
}
//----------------------------------
//Animation stuff
//----------------------------------
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
canvas.drawArc(circleBounds, 360, 360, false, rimPaint);
boolean mustInvalidate = false;
if (!shouldAnimate) {
return;
}
if (isSpinning) {
//Draw the spinning bar
mustInvalidate = true;
long deltaTime = (SystemClock.uptimeMillis() - lastTimeAnimated);
float deltaNormalized = deltaTime * spinSpeed / 1000.0f;
updateBarLength(deltaTime);
mProgress += deltaNormalized;
if (mProgress > 360) {
mProgress -= 360f;
// A full turn has been completed
// we run the callback with -1 in case we want to
// do something, like changing the color
runCallback(-1.0f);
}
lastTimeAnimated = SystemClock.uptimeMillis();
float from = mProgress - 90;
float length = barLength + barExtraLength;
if (isInEditMode()) {
from = 0;
length = 135;
}
canvas.drawArc(circleBounds, from, length, false, barPaint);
} else {
float oldProgress = mProgress;
if (mProgress != mTargetProgress) {
//We smoothly increase the progress bar
mustInvalidate = true;
float deltaTime = (float) (SystemClock.uptimeMillis() - lastTimeAnimated) / 1000;
float deltaNormalized = deltaTime * spinSpeed;
mProgress = Math.min(mProgress + deltaNormalized, mTargetProgress);
lastTimeAnimated = SystemClock.uptimeMillis();
}
if (oldProgress != mProgress) {
runCallback();
}
float offset = 0.0f;
float progress = mProgress;
if (!linearProgress) {
float factor = 2.0f;
offset = (float) (1.0f - Math.pow(1.0f - mProgress / 360.0f, 2.0f * factor)) * 360.0f;
progress = (float) (1.0f - Math.pow(1.0f - mProgress / 360.0f, factor)) * 360.0f;
}
if (isInEditMode()) {
progress = 360;
}
canvas.drawArc(circleBounds, offset - 90, progress, false, barPaint);
}
if (mustInvalidate) {
invalidate();
}
}
@Override protected void onVisibilityChanged(View changedView, int visibility) {
super.onVisibilityChanged(changedView, visibility);
if (visibility == VISIBLE) {
lastTimeAnimated = SystemClock.uptimeMillis();
}
}
private void updateBarLength(long deltaTimeInMilliSeconds) {
if (pausedTimeWithoutGrowing >= pauseGrowingTime) {
timeStartGrowing += deltaTimeInMilliSeconds;
if (timeStartGrowing > barSpinCycleTime) {
// We completed a size change cycle
// (growing or shrinking)
timeStartGrowing -= barSpinCycleTime;
//if(barGrowingFromFront) {
pausedTimeWithoutGrowing = 0;
//}
barGrowingFromFront = !barGrowingFromFront;
}
float distance =
(float) Math.cos((timeStartGrowing / barSpinCycleTime + 1) * Math.PI) / 2 + 0.5f;
float destLength = (barMaxLength - barLength);
if (barGrowingFromFront) {
barExtraLength = distance * destLength;
} else {
float newLength = destLength * (1 - distance);
mProgress += (barExtraLength - newLength);
barExtraLength = newLength;
}
} else {
pausedTimeWithoutGrowing += deltaTimeInMilliSeconds;
}
}
/**
* Check if the wheel is currently spinning
*/
public boolean isSpinning() {
return isSpinning;
}
/**
* Reset the count (in increment mode)
*/
public void resetCount() {
mProgress = 0.0f;
mTargetProgress = 0.0f;
invalidate();
}
/**
* Turn off spin mode
*/
public void stopSpinning() {
isSpinning = false;
mProgress = 0.0f;
mTargetProgress = 0.0f;
invalidate();
}
/**
* Puts the view on spin mode
*/
public void spin() {
lastTimeAnimated = SystemClock.uptimeMillis();
isSpinning = true;
invalidate();
}
private void runCallback(float value) {
if (callback != null) {
callback.onProgressUpdate(value);
}
}
private void runCallback() {
if (callback != null) {
float normalizedProgress = (float) Math.round(mProgress * 100 / 360.0f) / 100;
callback.onProgressUpdate(normalizedProgress);
}
}
/**
* Set the progress to a specific value,
* the bar will be set instantly to that value
*
* @param progress the progress between 0 and 1
*/
public void setInstantProgress(float progress) {
if (isSpinning) {
mProgress = 0.0f;
isSpinning = false;
}
if (progress > 1.0f) {
progress -= 1.0f;
} else if (progress < 0) {
progress = 0;
}
if (progress == mTargetProgress) {
return;
}
mTargetProgress = Math.min(progress * 360.0f, 360.0f);
mProgress = mTargetProgress;
lastTimeAnimated = SystemClock.uptimeMillis();
invalidate();
}
// Great way to save a view's state http://stackoverflow.com/a/7089687/1991053
@Override public Parcelable onSaveInstanceState() {
Parcelable superState = super.onSaveInstanceState();
WheelSavedState ss = new WheelSavedState(superState);
// We save everything that can be changed at runtime
ss.mProgress = this.mProgress;
ss.mTargetProgress = this.mTargetProgress;
ss.isSpinning = this.isSpinning;
ss.spinSpeed = this.spinSpeed;
ss.barWidth = this.barWidth;
ss.barColor = this.barColor;
ss.rimWidth = this.rimWidth;
ss.rimColor = this.rimColor;
ss.circleRadius = this.circleRadius;
ss.linearProgress = this.linearProgress;
ss.fillRadius = this.fillRadius;
return ss;
}
@Override public void onRestoreInstanceState(Parcelable state) {
if (!(state instanceof WheelSavedState)) {
super.onRestoreInstanceState(state);
return;
}
WheelSavedState ss = (WheelSavedState) state;
super.onRestoreInstanceState(ss.getSuperState());
this.mProgress = ss.mProgress;
this.mTargetProgress = ss.mTargetProgress;
this.isSpinning = ss.isSpinning;
this.spinSpeed = ss.spinSpeed;
this.barWidth = ss.barWidth;
this.barColor = ss.barColor;
this.rimWidth = ss.rimWidth;
this.rimColor = ss.rimColor;
this.circleRadius = ss.circleRadius;
this.linearProgress = ss.linearProgress;
this.fillRadius = ss.fillRadius;
this.lastTimeAnimated = SystemClock.uptimeMillis();
}
/**
* @return the current progress between 0.0 and 1.0,
* if the wheel is indeterminate, then the result is -1
*/
public float getProgress() {
return isSpinning ? -1 : mProgress / 360.0f;
}
//----------------------------------
//Getters + setters
//----------------------------------
/**
* Set the progress to a specific value,
* the bar will smoothly animate until that value
*
* @param progress the progress between 0 and 1
*/
public void setProgress(float progress) {
if (isSpinning) {
mProgress = 0.0f;
isSpinning = false;
runCallback();
}
if (progress > 1.0f) {
progress -= 1.0f;
} else if (progress < 0) {
progress = 0;
}
if (progress == mTargetProgress) {
return;
}
// If we are currently in the right position
// we set again the last time animated so the
// animation starts smooth from here
if (mProgress == mTargetProgress) {
lastTimeAnimated = SystemClock.uptimeMillis();
}
mTargetProgress = Math.min(progress * 360.0f, 360.0f);
invalidate();
}
/**
* Sets the determinate progress mode
*
* @param isLinear if the progress should increase linearly
*/
public void setLinearProgress(boolean isLinear) {
linearProgress = isLinear;
if (!isSpinning) {
invalidate();
}
}
/**
* @return the radius of the wheel in pixels
*/
public int getCircleRadius() {
return circleRadius;
}
/**
* Sets the radius of the wheel
*
* @param circleRadius the expected radius, in pixels
*/
public void setCircleRadius(int circleRadius) {
this.circleRadius = circleRadius;
if (!isSpinning) {
invalidate();
}
}
/**
* @return the width of the spinning bar
*/
public int getBarWidth() {
return barWidth;
}
/**
* Sets the width of the spinning bar
*
* @param barWidth the spinning bar width in pixels
*/
public void setBarWidth(int barWidth) {
this.barWidth = barWidth;
if (!isSpinning) {
invalidate();
}
}
/**
* @return the color of the spinning bar
*/
public int getBarColor() {
return barColor;
}
/**
* Sets the color of the spinning bar
*
* @param barColor The spinning bar color
*/
public void setBarColor(int barColor) {
this.barColor = barColor;
setupPaints();
if (!isSpinning) {
invalidate();
}
}
/**
* @return the color of the wheel's contour
*/
public int getRimColor() {
return rimColor;
}
/**
* Sets the color of the wheel's contour
*
* @param rimColor the color for the wheel
*/
public void setRimColor(int rimColor) {
this.rimColor = rimColor;
setupPaints();
if (!isSpinning) {
invalidate();
}
}
/**
* @return the base spinning speed, in full circle turns per second
* (1.0 equals on full turn in one second), this value also is applied for
* the smoothness when setting a progress
*/
public float getSpinSpeed() {
return spinSpeed / 360.0f;
}
/**
* Sets the base spinning speed, in full circle turns per second
* (1.0 equals on full turn in one second), this value also is applied for
* the smoothness when setting a progress
*
* @param spinSpeed the desired base speed in full turns per second
*/
public void setSpinSpeed(float spinSpeed) {
this.spinSpeed = spinSpeed * 360.0f;
}
/**
* @return the width of the wheel's contour in pixels
*/
public int getRimWidth() {
return rimWidth;
}
/**
* Sets the width of the wheel's contour
*
* @param rimWidth the width in pixels
*/
public void setRimWidth(int rimWidth) {
this.rimWidth = rimWidth;
if (!isSpinning) {
invalidate();
}
}
public interface ProgressCallback {
/**
* Method to call when the progress reaches a value
* in order to avoid float precision issues, the progress
* is rounded to a float with two decimals.
*
* In indeterminate mode, the callback is called each time
* the wheel completes an animation cycle, with, the progress value is -1.0f
*
* @param progress a double value between 0.00 and 1.00 both included
*/
void onProgressUpdate(float progress);
}
static class WheelSavedState extends BaseSavedState {
//required field that makes Parcelables from a Parcel
public static final Creator<WheelSavedState> CREATOR =
new Creator<WheelSavedState>() {
public WheelSavedState createFromParcel(Parcel in) {
return new WheelSavedState(in);
}
public WheelSavedState[] newArray(int size) {
return new WheelSavedState[size];
}
};
float mProgress;
float mTargetProgress;
boolean isSpinning;
float spinSpeed;
int barWidth;
int barColor;
int rimWidth;
int rimColor;
int circleRadius;
boolean linearProgress;
boolean fillRadius;
WheelSavedState(Parcelable superState) {
super(superState);
}
private WheelSavedState(Parcel in) {
super(in);
this.mProgress = in.readFloat();
this.mTargetProgress = in.readFloat();
this.isSpinning = in.readByte() != 0;
this.spinSpeed = in.readFloat();
this.barWidth = in.readInt();
this.barColor = in.readInt();
this.rimWidth = in.readInt();
this.rimColor = in.readInt();
this.circleRadius = in.readInt();
this.linearProgress = in.readByte() != 0;
this.fillRadius = in.readByte() != 0;
}
@Override public void writeToParcel(Parcel out, int flags) {
super.writeToParcel(out, flags);
out.writeFloat(this.mProgress);
out.writeFloat(this.mTargetProgress);
out.writeByte((byte) (isSpinning ? 1 : 0));
out.writeFloat(this.spinSpeed);
out.writeInt(this.barWidth);
out.writeInt(this.barColor);
out.writeInt(this.rimWidth);
out.writeInt(this.rimColor);
out.writeInt(this.circleRadius);
out.writeByte((byte) (linearProgress ? 1 : 0));
out.writeByte((byte) (fillRadius ? 1 : 0));
}
}
}
本文详细介绍了Android中自定义对话框LoadDialog和进度轮播组件ProgressWheel的实现原理与使用方法。LoadDialog用于显示加载对话框，而ProgressWheel则提供了一种材料风格的进度指示器，兼容至Android 2.2版本。文章深入探讨了这两个组件的构造、属性设置、动画效果及如何在应用中调用。
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