标签：android style blog http java color
post(Runnable runnable) 启动线程
removeCallbacks(Runnable runnable) 取消线程
postDelayed(Runnable runnable,int time) 延时启动线程
例、应用启动的欢迎界面
首先是welcome.xml
1 <?xml version="1.0" encoding="utf-8"?> 2 <RelativeLayout 3 android:layout_width="fill_parent" 4 android:layout_height="fill_parent" 5 xmlns:android="http://schemas.android.com/apk/res/android"> 6 7 <ImageView 8 android:layout_width="wrap_content" 9 android:layout_height="wrap_content" 10 android:id="@+id/imageView" 11 android:layout_alignParentLeft="true" 12 android:layout_alignParentStart="true" 13 android:layout_alignParentTop="true" 14 android:layout_alignParentBottom="true" 15 android:src="@drawable/music" 16 android:layout_alignParentRight="true" 17 android:layout_alignParentEnd="true" /> 18 19 </RelativeLayout>
然后是main.xml
1 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 2 xmlns:tools="http://schemas.android.com/tools" 3 android:layout_width="match_parent" 4 android:layout_height="match_parent" 5 android:paddingLeft="@dimen/activity_horizontal_margin" 6 android:paddingRight="@dimen/activity_horizontal_margin" 7 android:paddingTop="@dimen/activity_vertical_margin" 8 android:paddingBottom="@dimen/activity_vertical_margin" 9 tools:context=".MyActivity"> 10 11 <TextView 12 android:text="@string/hello_world" 13 android:layout_width="wrap_content" 14 android:layout_height="wrap_content" /> 15 16 </RelativeLayout>
welcome.java
import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.os.Handler;
import android.view.Window;
import android.widget.ImageView;
public class welcome extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.welcome);
new Handler().postDelayed(new Runnable() {
@Override
public void run() {
Intent mainIntent = new Intent(welcome.this,MyActivity.class);
welcome.this.startActivity(mainIntent);
welcome.this.finish();
}
},3000);
}
}
这里使用requestWindowFeature(Window.FEATURE_NO_TITLE)将标题栏隐藏。创建一个子线程，延时3秒跳转的下一个Activity。
MyActivity.java
import android.app.Activity; import android.os.Bundle; import android.view.Menu; import android.view.MenuItem; public class MyActivity extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_my); } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.my, menu); return true; } @Override public boolean onOptionsItemSelected(MenuItem item) { // Handle action bar item clicks here. The action bar will // automatically handle clicks on the Home/Up button, so long // as you specify a parent activity in AndroidManifest.xml. int id = item.getItemId(); if (id == R.id.action_settings) { return true; } return super.onOptionsItemSelected(item); } }
标签：android style blog http java color
原文地址：http://www.cnblogs.com/Vzhen/p/3798907.html
