Utils.java

package com.anthony.inputlayout.utils;

import android.app.Activity;
import android.app.Dialog;
import android.content.Context;
import android.graphics.drawable.Drawable;
import android.os.Handler;
import android.os.Looper;
import android.support.annotation.ColorRes;
import android.support.v4.graphics.drawable.DrawableCompat;
import android.view.View;
import android.view.inputmethod.InputMethodManager;
import android.widget.EditText;

public class Utils {
    /**
     * 键盘切换延时时间
     */
    public static final int KEYBOARD_CHANGE_DELAY = 100;


    private static Handler sHandler = new Handler(Looper.getMainLooper());

    public static void runInThread(Runnable task) {
        new Thread(task).start();
    }

    public static void runInUIThread(Runnable task) {
        sHandler.post(task);
    }

    public static void runInUIThread(Runnable task, long delayMillis) {
        sHandler.postDelayed(task, delayMillis);
    }


    /**
     * 根据手机的分辨率从 dp 的单位 转成为 px(像素)
     */
    public static int dip2px(Context context, float dpValue) {
        final float scale = context.getResources().getDisplayMetrics().density;
        return (int) (dpValue * scale + 0.5f);
    }


    public static Drawable tintDrawable(Context context, Drawable drawable, @ColorRes int color) {
        if (drawable == null) {
            return null;
        }

        final Drawable wrappedDrawable = DrawableCompat.wrap(drawable);
        DrawableCompat.setTint(wrappedDrawable, context.getResources().getColor(color));
        return wrappedDrawable;
    }

    /**
     * 关闭activity中打开的键盘
     *
     * @param activity
     */
    public static void closeKeyboard(Activity activity) {
        if (activity == null) {
            return;
        }

        View view = activity.getWindow().peekDecorView();
        if (view != null) {
            InputMethodManager inputMethodManager = (InputMethodManager) activity.getSystemService(Context.INPUT_METHOD_SERVICE);
            inputMethodManager.hideSoftInputFromWindow(view.getWindowToken(), 0);
        }
    }

    /**
     * 关闭dialog中打开的键盘
     *
     * @param dialog
     */
    public static void closeKeyboard(Dialog dialog) {
        View view = dialog.getWindow().peekDecorView();
        if (view != null) {
            InputMethodManager inputMethodManager = (InputMethodManager) dialog.getContext().getSystemService(Context.INPUT_METHOD_SERVICE);
            inputMethodManager.hideSoftInputFromWindow(view.getWindowToken(), 0);
        }
    }

    /**
     * 打开键盘
     *
     * @param editText
     */
    public static void openKeyboard(final EditText editText) {
        runInUIThread(new Runnable() {
            @Override
            public void run() {
                editText.requestFocus();
                editText.setSelection(editText.getText().toString().length());
                InputMethodManager imm = (InputMethodManager) editText.getContext().getSystemService(Context.INPUT_METHOD_SERVICE);
                imm.showSoftInput(editText, InputMethodManager.SHOW_FORCED);
            }
        }, 300);
    }
}