以下的代碼可以調用系統的拍照程式,
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intent it = newintent("android.media.action.image_capture");
startactivityforresult(it, activity.default_keys_dialer);
按下拍照鍵後,會傳回到你的activity,是以你的activity要在onactivityresult方法裡加一個處理,
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protectedvoidonactivityresult(intrequestcode, intresultcode, intent data) {
super.onactivityresult(requestcode, resultcode, data);
try{
bundle extras = data.getextras();
bitmap b = (bitmap) extras.get("data");
take = b;
imageview img = (imageview)findviewbyid(r.id.image);
img.setimagebitmap(take);
}catch(exception e){
}
}
但是這樣你會發現這個bitmap尺寸太小了。明顯是被壓縮過了,要像傳回未被壓縮的照片,那麼你要給調用系統拍照程式intent加上參數,指定圖檔輸出的位置。
it.putextra(mediastore.extra_output, uri.fromfile(newfile(f.sd_card_temp_photo_path)));
這樣就是大圖檔傳回了。
take = u.resizebitmap(u.getbitmapforfile(f.sd_card_temp_photo_path), 640);
imgflag = true;
另外注意一下,傳回的那個bitmap會很大,你用完以後要把它回收掉,不然你很容易記憶體報oom錯誤
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publicstaticbitmap resizebitmap(bitmap bitmap, intnewwidth) {
intwidth = bitmap.getwidth();
intheight = bitmap.getheight();
floattemp = ((float) height) / ((float) width);
intnewheight = (int) ((newwidth) * temp);
floatscalewidth = ((float) newwidth) / width;
floatscaleheight = ((float) newheight) / height;
matrix matrix = newmatrix();
// resize the bit map
matrix.postscale(scalewidth, scaleheight);
// matrix.postrotate(45);
bitmap resizedbitmap = bitmap.createbitmap(bitmap, 0, 0, width, height, matrix, true);
bitmap.recycle();
returnresizedbitmap;