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jialangjijialangji
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实现view转图片
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+327
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2 files changed

+327
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‎app/src/main/java/com/jlj/pmd/DisplayUtil.java

+323
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package com.jlj.pmd;
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import android.app.Activity;
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import android.app.Dialog;
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import android.content.Context;
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import android.content.res.Resources;
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import android.graphics.Bitmap;
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import android.graphics.Canvas;
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import android.graphics.Matrix;
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import android.graphics.PixelFormat;
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import android.graphics.Point;
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import android.graphics.drawable.BitmapDrawable;
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import android.graphics.drawable.Drawable;
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import android.os.IBinder;
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import android.support.v4.content.ContextCompat;
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import android.util.DisplayMetrics;
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import android.view.Display;
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import android.view.MotionEvent;
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import android.view.View;
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import android.view.WindowManager;
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import android.view.inputmethod.InputMethodManager;
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import android.widget.EditText;
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import android.widget.TextView;
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import static android.content.Context.INPUT_METHOD_SERVICE;
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public class DisplayUtil {
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// 状态栏高度
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private static int mStatusHeight = -1;
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// 屏幕像素点
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private static final Point screenSize = new Point();
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public static float getDensity(Context context) {
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Resources resources = context.getResources();
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DisplayMetrics dm = resources.getDisplayMetrics();
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return dm.density;
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}
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public static int getDensityWdith(Context context) {
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Resources resources = context.getResources();
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DisplayMetrics dm = resources.getDisplayMetrics();
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return dm.widthPixels;
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}
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public static int getDensityHeight(Context context) {
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Resources resources = context.getResources();
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DisplayMetrics dm = resources.getDisplayMetrics();
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return dm.heightPixels;
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}
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// 1.代码中设置setXXSize的都是px单位，都需要把布局中的dp，sp转成px才能使用
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/**
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* 根据手机分辨率从 px(像素) 单位 转成 dp
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*/
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public static int px2dip(Context context, float pxValue) {
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final float scale = context.getResources().getDisplayMetrics().density;
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return (int) (pxValue / scale + 0.5f);
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}
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/**
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* 根据手机分辨率从 dp 单位 转成 px(像素)
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*/
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public static int dip2px(Context context, float dpValue) {
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final float scale = context.getResources().getDisplayMetrics().density;
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return (int) (dpValue * scale + 0.5f);
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}
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/**
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* 将px值转换为sp值，保证文字大小不变
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*
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* @param pxValue （DisplayMetrics类中属性scaledDensity）
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*/
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public static int px2sp(Context context, float pxValue) {
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final float fontScale = context.getResources().getDisplayMetrics().scaledDensity;
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return (int) (pxValue / fontScale + 0.5f);
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}
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/**
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* 将sp值转换为px值，保证文字大小不变
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*
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* @param spValue （DisplayMetrics类中属性scaledDensity）
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*/
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public static int sp2px(Context context, float spValue) {
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final float fontScale = context.getResources().getDisplayMetrics().scaledDensity;
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return (int) (spValue * fontScale + 0.5f);
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}
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public static int getWidth(Context context, int liangbianjuli, int num,
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int picjuli) {
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// 屏幕宽度-两边的距离-图片中间的距离 除以列数
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return (getDensityWdith(context)
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- DisplayUtil.dip2px(context, liangbianjuli) * 2 - dip2px(
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context, picjuli) * (num - 1))
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/ num;
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}
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public static int getWidth(Context context, int num,
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int jian) {
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// 屏幕宽度-两边的距离-图片中间的距离 除以列数
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return (getDensityWdith(context) - DisplayUtil.dip2px(context, jian))
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/ num * 2;
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}
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public static int getWidth(Context context, int percent) {
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// 获取屏幕的高度
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return Integer.parseInt((getDensityWdith(context) * percent) / 100 + "");
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}
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public static int getHeight(Context context, int fenmu) {
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// 获取屏幕的高度
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return (getDensityHeight(context) / fenmu);
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}
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public static void setDrawbleLeft(Context context, TextView view, int rsd, int demens) {
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Drawable drawable = ContextCompat.getDrawable(context, rsd);
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// / 这一步必须要做,否则不会显示.
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drawable.setBounds(0, 0, drawable.getMinimumWidth(),
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drawable.getMinimumHeight());
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view.setCompoundDrawables(drawable, null, null, null);
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view.setCompoundDrawablePadding(dip2px(context, demens));
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}
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public static void setDrawbleLeft(Context context, TextView view, Drawable drawable, int demens,int width) {
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drawable.setBounds(0, 0, width,
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width);
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view.setCompoundDrawables(drawable, null, null, null);
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view.setCompoundDrawablePadding(dip2px(context, demens));
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}
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public static void setDrawbleLeftAndRight(Context context, TextView view, int rsd, int rrsd,int demens) {
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Drawable drawable = ContextCompat.getDrawable(context, rsd);
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Drawable rdrawable = ContextCompat.getDrawable(context, rrsd);
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// / 这一步必须要做,否则不会显示.
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drawable.setBounds(0, 0, drawable.getMinimumWidth(),
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drawable.getMinimumHeight());
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rdrawable.setBounds(0, 0, rdrawable.getMinimumWidth(),
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rdrawable.getMinimumHeight());
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view.setCompoundDrawables(drawable, null, rdrawable, null);
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view.setCompoundDrawablePadding(dip2px(context, demens));
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}
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public static void setDrawbleRight(Context context, TextView view, int rsd, int demens) {
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Drawable drawable = context.getResources().getDrawable(rsd);
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// / 这一步必须要做,否则不会显示.
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drawable.setBounds(0, 0, drawable.getMinimumWidth(),
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drawable.getMinimumHeight());
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view.setCompoundDrawables(null, null, drawable, null);
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view.setCompoundDrawablePadding(demens);
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}
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public static void setDrawbleTop(Context context, TextView view,Drawable drawable, int demens) {
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// / 这一步必须要做,否则不会显示.
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drawable.setBounds(0, 0, drawable.getMinimumWidth(),
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drawable.getMinimumHeight());
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view.setCompoundDrawables(null, drawable, null, null);
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view.setCompoundDrawablePadding(dip2px(context, demens));
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}
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public static Point getScreenSize(Activity context) {
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if (context == null) {
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return screenSize;
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}
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WindowManager wm = (WindowManager) context
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.getSystemService(Context.WINDOW_SERVICE);
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if (wm != null) {
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DisplayMetrics mDisplayMetrics = new DisplayMetrics();
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Display diplay = wm.getDefaultDisplay();
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if (diplay != null) {
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diplay.getMetrics(mDisplayMetrics);
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int W = mDisplayMetrics.widthPixels;
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int H = mDisplayMetrics.heightPixels;
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if (W * H > 0 && (W > screenSize.x || H > screenSize.y)) {
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screenSize.set(W, H);
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}
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}
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}
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return screenSize;
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}
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/**
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* 处理点击非 EditText 区域时，自动关闭键盘
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*
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* @param isAutoCloseKeyboard 是否自动关闭键盘
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* @param currentFocusView 当前获取焦点的控件
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* @param motionEvent 触摸事件
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* @param dialogOrActivity Dialog 或 Activity
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*/
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public static void handleAutoCloseKeyboard(boolean isAutoCloseKeyboard, View currentFocusView, MotionEvent motionEvent, Object dialogOrActivity) {
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if (isAutoCloseKeyboard && motionEvent.getAction() == MotionEvent.ACTION_DOWN && (currentFocusView instanceof EditText) && dialogOrActivity != null) {
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int[] leftTop = {0, 0};
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currentFocusView.getLocationInWindow(leftTop);
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int left = leftTop[0];
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int top = leftTop[1];
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int bottom = top + currentFocusView.getHeight();
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int right = left + currentFocusView.getWidth();
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if (!(motionEvent.getX() > left && motionEvent.getX() < right && motionEvent.getY() > top && motionEvent.getY() < bottom)) {
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if (dialogOrActivity instanceof Dialog) {
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closeKeyboard((Dialog) dialogOrActivity);
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} else if (dialogOrActivity instanceof Activity) {
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closeKeyboard((Activity) dialogOrActivity);
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}
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}
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}
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}
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/**
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* 关闭dialog中打开的键盘
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*
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*/
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public static void closeKeyboard(Dialog dialog) {
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View view = dialog.getWindow().peekDecorView();
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if (view != null) {
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InputMethodManager inputMethodManager = (InputMethodManager) dialog.getContext().getSystemService(INPUT_METHOD_SERVICE);
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if (null != inputMethodManager) {
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inputMethodManager.hideSoftInputFromWindow(view.getWindowToken(), 0);
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}
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}
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}
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/**
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* 关闭activity中打开的键盘
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*/
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public static void closeKeyboard(Activity activity) {
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View view = activity.getWindow().peekDecorView();
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if (view != null) {
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InputMethodManager inputMethodManager = (InputMethodManager) activity.getSystemService(INPUT_METHOD_SERVICE);
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if (null != inputMethodManager) {
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inputMethodManager.hideSoftInputFromWindow(view.getWindowToken(), 0);
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}
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}
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}
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public static Bitmap drawableToBitmap(Drawable drawable)
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{
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int width = drawable.getIntrinsicWidth();
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int height = drawable.getIntrinsicHeight();
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Bitmap.Config config = drawable.getOpacity() != PixelFormat.OPAQUE ? Bitmap.Config.ARGB_8888 : Bitmap.Config.RGB_565;
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Bitmap bitmap = Bitmap.createBitmap(width, height, config);
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Canvas canvas = new Canvas(bitmap);
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drawable.setBounds(0, 0, width, height);
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drawable.draw(canvas);
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return bitmap;
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}
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public static Drawable zoomDrawable(Drawable drawable, int w, int h) {
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int width = drawable.getIntrinsicWidth();
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int height = drawable.getIntrinsicHeight();
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Bitmap oldbmp = drawableToBitmap(drawable);
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Matrix matrix = new Matrix();
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float scaleWidth = ((float) w / width);
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float scaleHeight = ((float) h / height);
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matrix.postScale(scaleWidth, scaleHeight);
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Bitmap newbmp = Bitmap.createBitmap(oldbmp, 0, 0, width, height, matrix, true); // 建立新的 bitmap ，其内容是对原 bitmap 的缩放后的图
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return new BitmapDrawable(newbmp);
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}
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/**
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* 获取控件的高度或者宽度 isHeight=true则为测量该控件的高度，isHeight=false则为测量该控件的宽度
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*/
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public static int getViewHeight(View view, boolean isHeight){
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int result;
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if(view==null)return 0;
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if(isHeight){
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int h = View.MeasureSpec.makeMeasureSpec(0,View.MeasureSpec.UNSPECIFIED);
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view.measure(h,0);
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result =view.getMeasuredHeight();
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}else{
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int w = View.MeasureSpec.makeMeasureSpec(0,View.MeasureSpec.UNSPECIFIED);
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view.measure(0,w);
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result =view.getMeasuredWidth();
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}
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return result;
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}
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/**
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* 根据EditText所在坐标和用户点击的坐标相对比，来判断是否隐藏键盘，因为当用户点击EditText时则不能隐藏
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*
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* @param v
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* @param event
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* @return
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*/
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public static boolean isShouldHideKeyboard(View v, MotionEvent event) {
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if (v != null && (v instanceof EditText)) {
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int[] l = {0, 0};
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v.getLocationInWindow(l);
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int left = l[0],
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top = l[1],
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bottom = top + v.getHeight(),
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right = left + v.getWidth();
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if (event.getX() > left && event.getX() < right
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&& event.getY() > top && event.getY() < bottom) {
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// 点击EditText的事件，忽略它。
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return false;
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} else {
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return true;
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}
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}
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// 如果焦点不是EditText则忽略，这个发生在视图刚绘制完，第一个焦点不在EditText上，和用户用轨迹球选择其他的焦点
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return false;
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}
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/**
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* 获取InputMethodManager，隐藏软键盘
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* @param token
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*/
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public static void hideKeyboard(IBinder token) {
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if (token != null) {
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InputMethodManager im = (InputMethodManager) AppContext.instance.getSystemService(INPUT_METHOD_SERVICE);
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im.hideSoftInputFromWindow(token, InputMethodManager.HIDE_NOT_ALWAYS);
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}
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}
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/**
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* * 显示键盘
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* *
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* * @param et 输入焦点
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* */
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public static void showInput(final EditText et) {
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InputMethodManager imm = (InputMethodManager) AppContext.instance.getSystemService(INPUT_METHOD_SERVICE);
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imm.showSoftInput(et, InputMethodManager.SHOW_IMPLICIT);
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}
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}

‎app/src/main/java/com/jlj/pmd/ImageActivity.java

+4-4
Original file line numberDiff line numberDiff line change
@@ -81,7 +81,7 @@ public void run() {
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int width = metric.widthPixels; // 屏幕宽度（像素）
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int height = metric.heightPixels; // 屏幕高度（像素）
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view = LayoutInflater.from(this).inflate(R.layout.view_message_layout,null);
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layoutView(view,width,height);
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layoutView(view,width,height);//这个地方不用动
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}
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@@ -95,8 +95,8 @@ public void onViewClicked() {
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private void layoutView(View v, int width, int height) {
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// 整个View的大小 参数是左上角 和右下角的坐标
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v.layout(0, 0, width, height);
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int measuredWidth = View.MeasureSpec.makeMeasureSpec(width-160, View.MeasureSpec.EXACTLY);
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int measuredHeight = View.MeasureSpec.makeMeasureSpec(240, View.MeasureSpec.EXACTLY);
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int measuredWidth = View.MeasureSpec.makeMeasureSpec(DisplayUtil.dip2px(this,240), View.MeasureSpec.EXACTLY);//宽 直接width 是一整个横屏 具体多宽慢慢算 160这个值好像不是dp 所以往大了设
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int measuredHeight = View.MeasureSpec.makeMeasureSpec(DisplayUtil.dip2px(this,80), View.MeasureSpec.EXACTLY);//高 同理
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/** 当然，measure完后，并不会实际改变View的尺寸，需要调用View.layout方法去进行布局。
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* 按示例调用layout函数后，View的大小将会变成你想要设置成的大小。
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*/
@@ -157,7 +157,7 @@ private Bitmap loadBitmapFromView(View v) {
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Bitmap bmp = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888);
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Canvas c = new Canvas(bmp);
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c.drawColor(Color.GRAY );
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c.drawColor(Color.GRAY );//这个地方设置颜色，随便你
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/** 如果不设置canvas画布为白色，则生成透明 */
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v.layout(0, 0, w, h);

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