android开发之欢迎界面的小例子，需要的朋友可以参考一下
首先你得写好xml文件，这也是最主要的。
然后，在activity中加入一个线程，延时2秒，用来跳转到主界面。
activity中线程代码如下：(顺便检测一下网络是否打开）
[java]
@Override
protected void onStart() {
super.onStart();
if(isNetworkConnected()){
new Thread(){
@Override
public void run() {
try {
Thread.sleep(2000);
Intent intent = new Intent(SplashActivity.this,CompusAssistMain.class);
startActivity(intent);
finish();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}.start();
}else{
//弹出对话框 让用户设置网络
AlertDialog.Builder builder = new Builder(this);
builder.setTitle("设置网络");
builder.setMessage("网络错误请设置网络");
builder.setPositiveButton("设置网络", new OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
Intent intent = new Intent();
intent.setClassName("com.android.settings", "com.android.settings.WirelessSettings");
startActivity(intent);
}
});
builder.setNegativeButton("取消", new OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
finish();
}
});
builder.create().show();
}
}
@Override
protected void onStart() {
super.onStart();
if(isNetworkConnected()){
new Thread(){
@Override
public void run() {
try {
Thread.sleep(2000);
Intent intent = new Intent(SplashActivity.this,CompusAssistMain.class);
startActivity(intent);
finish();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}.start();
}else{
//弹出对话框 让用户设置网络
AlertDialog.Builder builder = new Builder(this);
builder.setTitle("设置网络");
builder.setMessage("网络错误请设置网络");
builder.setPositiveButton("设置网络", new OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
Intent intent = new Intent();
intent.setClassName("com.android.settings", "com.android.settings.WirelessSettings");
startActivity(intent);
}
});
builder.setNegativeButton("取消", new OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
finish();
}
});
builder.create().show();
}
}检测网络的类isNetWorkConnected():
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