public class MainActivity extends Activity {

private Dialog splashDialog;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

//1.创建

Display display = this.getWindowManager().getDefaultDisplay();

Dialog dialog = new Dialog(this);

LinearLayout root = new LinearLayout(this);

root.setMinimumHeight(display.getHeight());

root.setMinimumWidth(display.getWidth());

root.setOrientation(LinearLayout.VERTICAL);

root.setBackgroundColor(Color.BLACK);

root.setLayoutParams(new

LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,

方式一：

root.setBackgroundResource(R.drawable.ic_launcher);

方式二：

ImageView img = new ImageView(context);

img.setImageBitmap(bitmap);

root.addView(img);

// Create and show the dialog

splashDialog = new Dialog(this,

android.R.style.Theme_Translucent_NoTitleBar);

// check to see if the splash screen should be full screen

if ((this.getWindow().getAttributes().flags &

WindowManager.LayoutParams.FLAG_FULLSCREEN)

== WindowManager.LayoutParams.FLAG_FULLSCREEN) {

splashDialog.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,

WindowManager.LayoutParams.FLAG_FULLSCREEN);

}

splashDialog.setContentView(root);

splashDialog.setCancelable(false);

//计时3秒后显示

CountDownTimer timer = new CountDownTimer(2 * 1000, 1000) {

@Override

public void onTick(long millisUntilFinished) {

}

@Override

public void onFinish() {

splashDialog.show();

}

};

timer.start();

}

}

2.关闭销毁

if (splashDialog != null && splashDialog.isShowing()) {

splashDialog.dismiss();

splashDialog = null;

}