不多说废话，直接上代码
屏幕截图，亲测可用，基于Activity
/**
* 屏幕截图
* @param activity
* @return
*/
public static Bitmap screenShot(AppCompatActivity activity,String filePath) {
if (activity == null){
Logger.getLogger().e("screenShot--->activity is null");
return null;
}
View view = activity.getWindow().getDecorView();
//允许当前窗口保存缓存信息
view.setDrawingCacheEnabled(true);
view.buildDrawingCache();
int navigationBarHeight = ScreenUtils.getNavigationBarHeight(view.getContext());
//获取屏幕宽和高
int width = ScreenUtils.getScreenWidth(view.getContext());
int height = ScreenUtils.getScreenHeight(view.getContext());
// 全屏不用考虑状态栏，有导航栏需要加上导航栏高度
Bitmap bitmap = null;
try {
bitmap = Bitmap.createBitmap(view.getDrawingCache(), 0, 0, width,
height + navigationBarHeight);
} catch (Exception e) {
// 这里主要是为了兼容异形屏做的处理，我这里的处理比较仓促，直接靠捕获异常处理
// 其实vivo oppo等这些异形屏手机官网都有判断方法
// 正确的做法应该是判断当前手机是否是异形屏，如果是就用下面的代码创建bitmap
String msg = e.getMessage();
// 部分手机导航栏高度不占窗口高度，不用添加，比如OppoR15这种异形屏
if (msg.contains("<= bitmap.height()")){
try {
bitmap = Bitmap.createBitmap(view.getDrawingCache(), 0, 0, width,
height);
} catch (Exception e1) {
msg = e1.getMessage();
// 适配Vivo X21异形屏，状态栏和导航栏都没有填充
if (msg.contains("<= bitmap.height()")) {
try {
bitmap = Bitmap.createBitmap(view.getDrawingCache(), 0, 0, width,
height - ScreenUtils.getStatusHeight(view.getContext()));
} catch (Exception e2) {
e2.printStackTrace();
}
}else {
e1.printStackTrace();
}
}
}else {
e.printStackTrace();
}
}
//销毁缓存信息
view.destroyDrawingCache();
view.setDrawingCacheEnabled(false);
if (null != bitmap){
try {
compressAndGenImage(bitmap,filePath);
Logger.getLogger().d("--->截图保存地址：" + filePath);
} catch (IOException e) {
e.printStackTrace();
}
}
return bitmap;
}
View截图，亲测可用 参考
/**
* view截图
* @return
*/
public static void viewShot(@NonNull final View v, @Nullable final String filePath,
@Nullable final ShotCallback shotCallback){
if (null == v) {
Logger.getLogger().e("view is null");
return;
}
v.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
@Override
public void onGlobalLayout() {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
v.getViewTreeObserver().removeOnGlobalLayoutListener(this);
} else {
v.getViewTreeObserver().removeGlobalOnLayoutListener(this);
}
// 核心代码start
Bitmap bitmap = Bitmap.createBitmap(v.getWidth() , v.getHeight(), Bitmap.Config.ARGB_8888);
Canvas c = new Canvas(bitmap);
v.layout(0, 0, v.getLayoutParams().width, v.getLayoutParams().height);
v.draw(c);
// end
String savePath = filePath;
if (TextUtils.isEmpty(savePath)){
savePath = createImagePath();
}
try {
compressAndGenImage(bitmap,savePath);
Logger.getLogger().d("--->截图保存地址：" + savePath);
} catch (IOException e) {
e.printStackTrace();
}
if (null != shotCallback){
shotCallback.onShotComplete(bitmap,savePath);
}
}
});
}
关于View截图，如果需要实现后台截图，也就是截图的时候view不在屏幕上显示，只需要把要截图的View设置成invisible就可以了。
另外再附上生成图片和保存到手机SD卡上的方法，一步到位，直接粘贴拿去就用
private static final String IMAGE_FILE_NAME_TEMPLATE = "Image%s.jpg";
private static final String IMAGE_FILE_PATH_TEMPLATE = "%s/%s";
/**
* 存储到sdcard
*
* @param bmp
* @param maxSize 为0不压缩
* @return
*/
public static String saveToSD(Bitmap bmp,int maxSize) {
if (bmp == null){
Logger.getLogger().e("saveToSD--->bmp is null");
return "";
}
//判断sd卡是否存在
if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
//文件名
long systemTime = System.currentTimeMillis();
String imageDate = new SimpleDateFormat("yyyy-MM-dd-HH-mm-ss").format(new Date(systemTime));
String mFileName = String.format(IMAGE_FILE_NAME_TEMPLATE, imageDate);
//文件全名
String mstrRootPath = FileUtil.getPackageDCIMPath(AFApplication.applicationContext);
String filePath = String.format(IMAGE_FILE_PATH_TEMPLATE, mstrRootPath, mFileName);
Logger.getLogger().d("saveToSD--->file path:" + filePath);
File file = new File(filePath);
if (!file.exists()) {
try {
file.createNewFile();
} catch (IOException e) {
e.printStackTrace();
}
}
Logger.getLogger().d("saveToSD--->file AbsolutePath:" + filePath);
try {
compressAndGenImage(bmp,filePath,maxSize);
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
bmp.recycle();
}
return filePath;
}
return "";
}
public static String createImagePath(){
//判断sd卡是否存在
if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
//文件名
long systemTime = System.currentTimeMillis();
String imageDate = new SimpleDateFormat("yyyy-MM-dd-HH-mm-ss").format(new Date(systemTime));
String mFileName = String.format(IMAGE_FILE_NAME_TEMPLATE, imageDate);
//文件全名
String mstrRootPath = FileUtil.getPackageDCIMPath(AFApplication.applicationContext);
String filePath = String.format(IMAGE_FILE_PATH_TEMPLATE, mstrRootPath, mFileName);
File file = new File(filePath);
if (!file.exists()) {
try {
file.createNewFile();
} catch (IOException e) {
e.printStackTrace();
}
}
return filePath;
}
return "";
}
public static void compressAndGenImage(Bitmap image, String outPath, int maxSize) throws IOException {
ByteArrayOutputStream os = new ByteArrayOutputStream();
// scale
int options = 100;
// Store the bitmap into output stream(no compress)
image.compress(Bitmap.CompressFormat.JPEG, options, os);
// Compress by loop
if (maxSize != 0) {
while (os.toByteArray().length / 1024 > maxSize) {
// Clean up os
os.reset();
// interval 10
options -= 10;
image.compress(Bitmap.CompressFormat.JPEG, options, os);
}
}
// Generate compressed image file
FileOutputStream fos = new FileOutputStream(outPath);
fos.write(os.toByteArray());
Logger.getLogger().d("compressAndGenImage--->文件大小：" + os.size()+"，压缩比例：" + options);
fos.flush();
fos.close();
}
public static void compressAndGenImage(Bitmap image, String outPath) throws IOException {
ByteArrayOutputStream os = new ByteArrayOutputStream();
// scale
int options = 70;
// Store the bitmap into output stream(no compress)
image.compress(Bitmap.CompressFormat.JPEG, options, os);
// Generate compressed image file
FileOutputStream fos = new FileOutputStream(outPath);
fos.write(os.toByteArray());
Logger.getLogger().d("compressAndGenImage--->文件大小：" + os.size()+"，压缩比例：" + options);
fos.flush();
fos.close();
}
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