Start a new Activity with a Split animation - Android Animation

Android examples for Animation:Animation Creation

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Description

Start a new Activity with a Split animation

Demo Code


//package com.java2s;

import android.app.Activity;

import android.content.Intent;
import android.graphics.Bitmap;

import android.view.View;

public class Main {
    public static Bitmap mBitmap = null;
    private static int[] mLoc1;
    private static int[] mLoc2;

    /**// w  w  w .  ja v a  2  s. c o m
     * Start a new Activity with a Split animation
     *
     * @param currActivity The current Activity
     * @param intent       The Intent needed tot start the new Activity
     * @param splitYCoord  The Y coordinate where we want to split the Activity on the animation. -1 will split the Activity equally
     */
    public static void startActivity(Activity currActivity, Intent intent,
            int splitYCoord) {

        // Preparing the bitmaps that we need to show
        prepare(currActivity, splitYCoord);
        currActivity.startActivity(intent);
        currActivity.overridePendingTransition(0, 0);
    }

    /**
     * Start a new Activity with a Split animation right in the middle of the Activity
     *
     * @param currActivity The current Activity
     * @param intent       The Intent needed tot start the new Activity
     */
    public static void startActivity(Activity currActivity, Intent intent) {
        startActivity(currActivity, intent, -1);
    }

    private static void prepare(Activity currActivity, int splitYCoord) {

        View root = currActivity.getWindow().getDecorView()
                .findViewById(android.R.id.content);
        root.setDrawingCacheEnabled(true);
        mBitmap = root.getDrawingCache();

        splitYCoord = (splitYCoord != -1 ? splitYCoord : mBitmap
                .getHeight() / 2);

        if (splitYCoord > mBitmap.getHeight())
            throw new IllegalArgumentException("Split Y coordinate ["
                    + splitYCoord + "] exceeds the activity's height ["
                    + mBitmap.getHeight() + "]");

        mLoc1 = new int[] { 0, splitYCoord, root.getTop() };
        mLoc2 = new int[] { splitYCoord, mBitmap.getHeight(), root.getTop() };
    }
}

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