Android的屏幕截图? [英] android screenshot?
本文介绍了Android的屏幕截图?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
Button button = (Button)findViewById(R.id.btnTakeScreenshot);
button.setOnClickListener(new View.OnClickListener() {
//@Override
public void onClick(View v) {
final View content = findViewById(R.id.layoutroot);
content.setDrawingCacheEnabled(true);
Bitmap bitmap = content.getDrawingCache();
File file = new File(Environment.getExternalStorageDirectory() + "/test.png");
try
{
file.createNewFile();
FileOutputStream ostream = new FileOutputStream(file);
bitmap.compress(CompressFormat.PNG, 100, ostream);
ostream.close();
Toast.makeText(content.getContext(), "HELLO", Toast.LENGTH_SHORT);
}
catch (Exception e)
{
System.out.print("error");
e.printStackTrace();
}
}
});
以上code是捕捉到的截图,但它创造零KB空白文件?
above code is to capture a screenshot, but it creates blank file of zero kb?
推荐答案
file.createNewFile();
不正是你问它:创建一个空白,空文件。然后,如果图形缓存为空,你会得到什么的文件中。试试这个:
file.createNewFile();
does exactly what you asked of it: creates a blank, empty file. Then if the drawing cache is empty you will get nothing in the file. Try this:
Button button = (Button)findViewById(R.id.btnTakeScreenshot);
final View content = findViewById(R.id.layoutroot);
content.setDrawingCacheEnabled(true);
button.setOnClickListener(new View.OnClickListener() {
//@Override
public void onClick(View v) {
Bitmap bitmap = content.getDrawingCache();
File file = new File(Environment.getExternalStorageDirectory() + "/test.png");
try
{
file.createNewFile();
FileOutputStream ostream = new FileOutputStream(file);
bitmap.compress(CompressFormat.PNG, 100, ostream);
ostream.close();
Toast.makeText(content.getContext(), "HELLO", Toast.LENGTH_SHORT);
}
catch (Exception e)
{
System.out.print("error");
e.printStackTrace();
}
}
});
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