1
我使用以下代碼將圖像寫入sdcard
,然後顯示爲壁紙,但它只會工作一次,也就是說,它不會更改任何其他所以我想這不是覆蓋文件,爲什麼?這段代碼爲什麼不起作用?它不會覆蓋該文件由於某種原因
D.kF []是一個位圖陣列 D.bgNumber是一個int
Graphics graphics = Graphics.create(D.kF[D.bgNumber]);
JPEGEncodedImage encoder = JPEGEncodedImage.encode(D.kF[D.bgNumber], 100);
try {
ExtendedFileConnection fconn = (ExtendedFileConnection) Connector
.open("file:///store/home/user/pictures/image.jpg",
Connector.READ_WRITE);
fconn.enableDRMForwardLock();
if (!fconn.exists()) {
fconn.create();
}
OutputStream os = fconn.openOutputStream();
os.write(encoder.getData());
os.close();
fconn.close();
} catch (Exception e) {
System.out.println("Output file error: " + e.getMessage());
}
HomeScreen.setBackgroundImage("file:///store/home/user/pictures/image.jpg");