Android的:使用的setContentView()线程完成后, [英] Android: Use setContentView() after Thread finished
问题描述
我想使用的setContentView()方法的线程已经完成他的任务后。
但是,我怎么能认识到这一点,因为它不可能用内螺纹这种方法吗?
当在onCreate()方法使用这种方法的线程运行时,我也鸵鸟政策得到正确的结果,导致布局至极应与第一次的setContentView(R.layout.load_screen)不显示被显示。
我的onCreate()方法:
保护无效的onCreate(捆绑savedInstanceState){
super.onCreate(savedInstanceState); //打开载入画面
的setContentView(R.layout.load_screen);
this.loadingScreen(); //在该方法的新的线程将启动。
}
我loadingScreen()方法:(线程完成后,我想用的setContentView()再次)
公共无效loadingScreen(){
// prepare一个进度条对话框
进度=新的ProgressBar(本);
进度=(进度)findViewById(R.id.progressBar1); //重置进度条状态
progressBarStatus = 0; 新主题(新的Runnable接口(){
公共无效的run(){
而(progressBarStatus< 100){
尝试{
视频下载(100);
}赶上(InterruptedException的E1){
// TODO自动生成catch块
e1.printStackTrace();
}
//过程中的一些任务
progressBarStatus = doSomeTasks(); //你的电脑实在是太快了,睡眠1秒
尝试{
视频下载(100);
}赶上(InterruptedException的E){
e.printStackTrace();
} //更新进度条
progressBarHandler.post(新的Runnable(){
公共无效的run(){
progressBar.setProgress(progressBarStatus);
}
});
} // OK,文件下载,
如果(progressBarStatus> = 100){ //睡眠2秒,这样您就可以看到100%
尝试{
视频下载(2000);
}赶上(InterruptedException的E){
e.printStackTrace();
} }
}
})。开始();
}
您可以使用处理程序来更新线程内的用户界面。或U可以简单地使用runOnUiThread更新UI。和U不想使用的setContentView方法来改变用户界面,U可以简单地使用吹气布局来获取另一个布局UR的ViewGroup。
I want to use the setContentView() method after a thread has completed his task. But how could I realize this, as its not possible to use this method inside the thread? When using this method in the onCreate() method while the thread is running, I also don´t get the correct result, cause the layout wich should be displayed with the first "setContentView(R.layout.load_screen)" is not displayed.
My onCreate() Method:
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Open loading screen
setContentView(R.layout.load_screen);
this.loadingScreen(); // In this method the new Thread will start.
}
My loadingScreen() Method: (After the thread completed I would like to use setContentView() again)
public void loadingScreen(){
// prepare for a progress bar dialog
progressBar = new ProgressBar(this);
progressBar = (ProgressBar)findViewById(R.id.progressBar1);
//reset progress bar status
progressBarStatus = 0;
new Thread(new Runnable() {
public void run() {
while (progressBarStatus < 100) {
try {
Thread.sleep(100);
} catch (InterruptedException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
// process some tasks
progressBarStatus = doSomeTasks();
// your computer is too fast, sleep 1 second
try {
Thread.sleep(100);
} catch (InterruptedException e) {
e.printStackTrace();
}
// Update the progress bar
progressBarHandler.post(new Runnable() {
public void run() {
progressBar.setProgress(progressBarStatus);
}
});
}
// ok, file is downloaded,
if (progressBarStatus >= 100) {
// sleep 2 seconds, so that you can see the 100%
try {
Thread.sleep(2000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}).start();
}
you can use Handler to update the ui inside the thread. or u can simply use runOnUiThread to update the ui. and u dont want to use setcontentview method to change the ui, u can simply use layout inflater to fetch another layout to ur viewgroup.
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