package com.atlas.library.widget;import android.annotation.TargetApi;
import android.content.Context;
import android.content.res.Configuration;
import android.graphics.PixelFormat;
import android.os.Build;
import android.os.Handler;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.WindowManager;
import android.widget.TextView;import com.atlas.library.R;/*** Created by atlas on 15/4/25.* Email:atlas.tufei@gmail.com*/
public class ToastUtils {private static final String TAG = ToastUtils.class.getSimpleName();private static TextView tv;public static final int LENGTH_LONG = 3500; // 3.5 secondspublic static final int LENGTH_SHORT = 2000; // 2 secondsprivate static View mNextView;private static int mGravity, mX, mY;private static final WindowManager.LayoutParams mParams = new WindowManager.LayoutParams();private static WindowManager mWM;private static Handler mHanlder = new Handler();/*** init* @param context*/@TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1)private static void init(Context context) {mY = context.getResources().getDimensionPixelSize(R.dimen.toast_y_offset);mGravity = context.getResources().getInteger(R.integer.config_toastDefaultGravity);LayoutInflater inflate = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);mNextView = inflate.inflate(R.layout.transient_notification, null);TextView tv = (TextView) mNextView.findViewById(android.R.id.message);mParams.height = WindowManager.LayoutParams.WRAP_CONTENT;mParams.width = WindowManager.LayoutParams.WRAP_CONTENT;mParams.format = PixelFormat.TRANSLUCENT;mParams.windowAnimations = R.style.Animation_Toast;mParams.type = WindowManager.LayoutParams.TYPE_TOAST;mParams.setTitle("Toast");mParams.flags = WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON| WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE| WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE;mWM = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);// We can resolve the Gravity here by using the Locale for getting// the layout directionfinal Configuration config = mNextView.getContext().getResources().getConfiguration();final int gravity = Gravity.getAbsoluteGravity(mGravity, config.getLayoutDirection());mParams.gravity = gravity;if ((gravity & Gravity.HORIZONTAL_GRAVITY_MASK) == Gravity.FILL_HORIZONTAL) {mParams.horizontalWeight = 1.0f;}if ((gravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.FILL_VERTICAL) {mParams.verticalWeight = 1.0f;}mParams.x = mX;mParams.y = mY;
//        mParams.verticalMargin = mVerticalMargin;
//        mParams.horizontalMargin = mHorizontalMargin;mParams.packageName = context.getPackageName();}/*** Show the view for the specified duration.* @param context* @param text* @param duration*/public static void show(final Context context, final CharSequence text, int duration) {if (context == null) {throw new RuntimeException("context is null");}if (mWM == null || mNextView == null) {init(context);}mHanlder.removeCallbacks(cancelRunable);mHanlder.post(new Runnable() {@Overridepublic void run() {((TextView) mNextView.findViewById(android.R.id.message)).setText(text);if (mNextView.getParent() != null)mWM.removeView(mNextView);mWM.addView(mNextView, mParams);}});mHanlder.postDelayed(cancelRunable, duration);}private static Runnable cancelRunable = new Runnable() {@Overridepublic void run() {cancel();}};/*** cancel toast*/public static void cancel() {if (mNextView != null && mNextView.getParent() != null)mWM.removeViewImmediate(mNextView);}
}