webview长截图与短截图+滑动控件ScrollView长截图保存在本地

需求里需要进行控件的截图，webview试了多种方法不行，最后找到一种稳定的方法。

以下代码分：短截图，长截图，保存在本地如下：

webview长截图在5.0以上手机请先添加此方法：

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
android.webkit.WebView.enableSlowWholeDocumentDraw();
}
setContentView(R.layout.e_cc);

短截图方法：

  

public void getcurret() {
Bitmap bitmap = Bitmap.createBitmap(mWebView.getWidth(), mWebView.getHeight(), Bitmap.Config.RGB_565);
Canvas canvas = new Canvas(bitmap);
canvas.drawBitmap(bitmap, mWebView.getWidth(), mWebView.getHeight(), new Paint());
mWebView.draw(canvas);
save(bitmap, "wc.jpg");
}

长截图方法

public void getlong() {
float scale = mWebView.getScale();
Log.e("scale:", scale + "");
int width = mWebView.getWidth();
int height = (int) (mWebView.getContentHeight() * scale + 0.5);
Bitmap longImage = Bitmap.createBitmap(width, height, Bitmap.Config.RGB_565);
Canvas canvas = new Canvas(longImage);
mWebView.draw(canvas);
save(longImage, "wl.jpg");
}

ScrollView长截图方法：

public void getSV() {
int h = 0;
for (int i = 0; i < mScrollView.getChildCount(); i++) {
View view = mScrollView.getChildAt(i);
h = view.getHeight() + h;
}
Bitmap bitmap = Bitmap.createBitmap(mScrollView.getWidth(), h, Bitmap.Config.RGB_565);
Canvas canvas = new Canvas(bitmap);
mScrollView.draw(canvas);
save(bitmap, "s.jpg");

}

保存在本地方法：

public void save(Bitmap bitmap, String s2) {

String s1 = Environment.getExternalStorageDirectory().getAbsolutePath();
File file = new File(s1, "wt");
if (!file.exists()) {
file.mkdirs();
}
FileOutputStream out = null;
File file1 = new File(file, s2);
try {
out = new FileOutputStream(file1);
} catch (FileNotFoundException e) {
e.printStackTrace();
}
try {
if (null != out) {
bitmap.compress(Bitmap.CompressFormat.JPEG, 20, out);
out.flush();
out.close();
Log.e("save:", "完成");
}
} catch (IOException e) {
e.printStackTrace();
}
}

网上有一种长截图方法，测试后不能用，知道原因请回复探讨：

mWebView.measure(View.MeasureSpec.makeMeasureSpec(View.MeasureSpec.UNSPECIFIED, View.MeasureSpec.UNSPECIFIED),
View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED));
mWebView.layout(0, 0, mWebView.getMeasuredWidth(), mWebView.getMeasuredHeight());
mWebView.setDrawingCacheEnabled(true);
mWebView.buildDrawingCache();
Bitmap longImage = Bitmap.createBitmap(mWebView.getMeasuredWidth(),
mWebView.getMeasuredHeight(), Bitmap.Config.RGB_565);
Canvas canvas = new Canvas(longImage);  // 画布的宽高和 WebView 的网页保持一致
Paint paint = new Paint();
canvas.drawBitmap(longImage, 0, mWebView.getMeasuredHeight(), paint);
mWebView.draw(canvas);