Eklett

public class BaseActivity extends AppCompatActivity {
  private int VIEW_TAG_CLICK = 2<<24;
  
  protected boolean isFastDoubleClick(View view) {
    Long lastClickTime = (Long) view.getTag(VIEW_TAG_CLICK);
    if (null == lastClickTime) {
      lastClickTime = 0L;
    }
    long time = System.currentTimeMillis();
    view.setTag(VIEW_TAG_CLICK, time);

Eklett

<android.support.v7.widget.Toolbar
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:fitsSystemWindows="true"
    android:layout_height="?attr/actionBarSize"
    style="@style/ToolbarStyle"
    android:contentInsetLeft="0dp"
    android:contentInsetStart="0dp"
    app:contentInsetLeft="0dp"

Eklett

import android.graphics.drawable.Drawable;
import android.graphics.PorterDuff;
import android.support.annotation.ColorInt;
import android.support.v4.graphics.drawable.DrawableCompat;
import android.widget.ImageView;

public class DrawableUtils {
  /**
  * 以SRC_ATOP的方式改变imageview图片的颜色

Eklett

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >
    <!-- 设置整个屏幕背景为白色 -->
    <item >
        <color android:color="@color/white"/>
    </item>
 
    <!-- 中间logo -->
    <item >
        <bitmap