Java tutorial
//package com.java2s; /* * Copyright (C) 2016 Jorge Ruesga * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ import android.graphics.Bitmap; import android.graphics.Canvas; import android.graphics.Paint; import android.text.TextPaint; import android.text.TextUtils; public class Main { public static Bitmap text2Bitmap(String text, int color, float size) { if (TextUtils.isEmpty(text)) { return null; } Paint paint = new TextPaint(Paint.ANTI_ALIAS_FLAG); paint.setTextSize(size); paint.setColor(color); paint.setTextAlign(Paint.Align.LEFT); float baseline = -paint.ascent(); int width = (int) (paint.measureText(text) + 0.5f); int height = (int) (baseline + paint.descent() + 0.5f); Bitmap image = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888); Canvas canvas = new Canvas(image); canvas.drawText(text, 0, baseline, paint); return image; } }