Android 将文字转换成图片并保存起来，搭建android开发环境实验报告
private Canvas mCanvas;
// 画笔－－画图片
private Paint mPicturePaint = new Paint();
// 画笔－－写字
private Paint mTextPaint = new Paint();
// 画笔－－写运动数据
private Paint mDataPaint = new Paint();
/**
-
根据图片和文字生成图片
-
@return
*/
private Bitmap drawBitmap() {
Bitmap bm_bg = BitmapFactory.decodeResource(getResources(),
R.drawable.ic_default_head_one);
// 得到图片的宽、高
int width_bg = bm_bg.getWidth();
int height_bg = bm_bg.getHeight();
// 创建一个你需要尺寸的Bitmap
mBitmap = Bitmap.createBitmap(width_bg, height_bg, Bitmap.Config.ARGB_8888);
// 用这个Bitmap生成一个Canvas,然后canvas就会把内容绘制到上面这个bitmap中
mCanvas = new Canvas(mBitmap);
// 绘制背景图片
mCanvas.drawBitmap(bm_bg, 0.0f, 0.0f, mPicturePaint);
// 绘制图片
Bitmap bm_head = BitmapFactory.decodeResource(getResources(),
R.drawable.ic_default_head_one);
// 得到图片的宽、高
int width_head = bm_head.getWidth();
int height_head = bm_head.getHeight();
// 绘制图片－－保证其在水平方向居中
mCanvas.drawBitmap(bm_head, (width_bg - width_head) / 2, 0.0f,
mPicturePaint);
// 绘制文字
mTextPaint.setColor(Color.WHITE);// 白色画笔
mTextPaint.setTextSize(18.0f);// 设置字体大小
// 绘制文字
mDataPaint.setColor(Color.RED);// 红色画笔
mDataPaint.setTextSize(18.0f);// 设置字体大小
String distanceTextString = “1.蓝牙名称：我只是一个孩子”;
String distanceDataString = “2.可用次数:888”;
String distanceScalString = “3.已用次数:888”;
String startTime = “4.开始时间:2020-09-21 :16:16:16”;
String endTime = “5.结束时间:2020-09-21 :16:16:16”;
float distanceTextString_width = mTextPaint.measureText(
distanceTextString, 0, distanceTextString.length());
float distanceDataString_width = mDataPaint.measureText(
distanceDataString, 0, distanceDataString.length());
float distanceScalString_width = mTextPaint.measureText(
distanceScalString, 0, distanceScalString.length());
float x = (width_bg - distanceTextString_width
- distanceDataString_width - distanceScalString_width) / 2;
Log.i(“info”,“xxxx”+x);
mCanvas.drawText(distanceTextString, width_head/6, height_head/5, mTextPaint);// 绘制文字
mCanvas.drawText(distanceDataString, width_head/6,
height_head/4+50, mDataPaint);// 绘制文字
// mCanvas.drawText(distanceScalString, x + distanceTextString_width
// + distanceDataString_width, height_head, mTextPaint);// 绘制文字
mCanvas.drawText(distanceScalString, width_head/6
, height_head/4+100, mTextPaint);// 绘制文字
mCanvas.drawText(startTime, width_head/6
, height_head/4+150, mTextPaint);// 绘制文字
mCanvas.drawText(endTime, width_head/6
, height_head/4+200, mTextPaint);// 绘制文字
// 保存绘图为本地图片
mCanvas.save();
mCanvas.restore();
saveImageToGallery(this,mBitmap,“share.png”);
FileInputStream fis = null;
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