Question

我正在尝试合并2张图片，所以我搜索并在此处看到了代码片段combining two png files in android

Bitmap bottomImage = new BitmapFactory.decodeFile("myFirstPNG.png");
Bitmap topImage = new BitmapFactor.decodeFile("myOtherPNG.png");


Canvas comboImage = new Canvas(bottomImage);
// Then draw the second on top of that
comboImage.drawBitmap(topImage, 0f, 0f, null);

// bottomImage is now a composite of the two. 

// To write the file out to the SDCard:
OutputStream os = null;
try {
    os = new FileOutputStream("/sdcard/DCIM/Camera/" + "myNewFileName.png");
    image.compress(CompressFormat.PNG, 50, os)
} catch(IOException e) {
    e.printStackTrace();
}

我尝试使用它，但出于某种原因 Bitmap bottomImage = new BitmapFactory.decodeFile（“myFirstPNG.png”）; 给出一个错误，即BitmapFactory无法重新转换为类型但我已经拥有两个

import android.graphics.Bitmap;
import android.graphics.BitmapFactory;

我正在使用phonegap，我把它放在主要活动中进行测试

Answer 1

decodeFile是一个静态方法，需要在类范围内调用，如下所示：

Bitmap bottomImage = BitmapFactory.decodeFile("myFirstPNG.png");
Bitmap topImage = BitmapFactor.decodeFile("myOtherPNG.png");

（请注意new关键字已被删除）

BitmapFactory.decodeFile无法解析为类型

1 个答案: