| 代碼如下 |
複製代碼 |
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.myimage);
ImageView image1 = (ImageView) findViewById(R.myImage.image);
//Bitmap bitmap = getLoacalBitmap("/aa/aa.jpg"); //從本地取圖片
Bitmap bitmap =
getHttpBitmap("hpath.jpg");
//從網上取圖片
image1 .setImageBitmap(bitmap); //設定Bitmap
}
/**
* 載入本地圖片
* http://www.111cn.net
* @param url
* @return
*/
public static Bitmap getLoacalBitmap(String url) {
try {
FileInputStream fis = new FileInputStream(url);
return BitmapFactory.decodeStream(fis);
} catch (FileNotFoundException e) {
e.printStackTrace();
return null;
}
} /**
* 從伺服器取圖片
*http://www.111cn.net
* @param url
* @return
*/
public static Bitmap getHttpBitmap(String url) {
URL myFileUrl = null;
Bitmap bitmap = null;
try {
Log.d(TAG, url);
myFileUrl = new URL(url);
} catch (MalformedURLException e) {
e.printStackTrace();
}
try {
HttpURLConnection conn = (HttpURLConnection) myFileUrl.openConnection();
conn.setConnectTimeout(0);
conn.setDoInput(true);
conn.connect();
InputStream is = conn.getInputStream();
bitmap = BitmapFactory.decodeStream(is);
is.close();
} catch (IOException e) {
e.printStackTrace();
}
return bitmap;
} |
ImageView 無法setImageBitmap，不顯示圖片解決辦法
以下是handler
| 代碼如下 |
複製代碼 |
handler.post(new Runnable() {
@Override
public void run() {
playAdver();
}
});
|
以下是playAdver()方法，主要是顯示圖片
| 代碼如下 |
複製代碼 |
private void playAdver() {
for (int i = 0; i < advertisementsList.size(); i++) {
advertisement = advertisementsList.get(i);
fileName = advertisement.getName();
index = advertisement.getName().indexOf(".");
String postfix = fileName.substring(index, fileName.length());
time = advertisement.getTime() * 100;
if (postfix.compareToIgnoreCase(".jpg") == 0
|| postfix.compareToIgnoreCase(".png") == 0) {
adverImage.setVisibility(View.VISIBLE);
adverImage.setImageBitmap(BitmapFactory.decodeFile(fileName));
try {
Thread.sleep(time);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
} |
執行了adverImage.setImageBitmap(BitmapFactory.decodeFile(fileName));但是在真機上不現實圖片，為什嗎？
因為我是在主線程裡面執行的，故不會顯示，以解決
