Android Studio 淡入主界面 [英] Android Studio fading splash into main
问题描述
我目前正在开发一款安卓应用.刚刚开始,我能够实现我的启动画面.但是,我不喜欢那个和主要活动之间的过渡.我希望闪屏淡出,主屏幕淡入.看起来它们融合在一起,因为我有相同的背景图像.做了一些研究,但还没有找到正确的答案.下面,我已经发布了我的代码.
I currently am working on an android app. Just started and I was able to implement my splash screen. However, I don't like the transition between that and the main activity. I want the splash screen to fade out and main to fade in. Looks like they blend together since I have the same background image for both. Did some research but havent been able to find the right answers. Below, I have posted my code.
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.MotionEvent;
public class Splash_screen extends Activity {
private Thread mSplashThread;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.splash_layout);
final Splash_screen sPlashScreen = this;
mSplashThread = new Thread(){
@Override
public void run(){
try {
synchronized(this){
wait(3000);
}
}
catch(InterruptedException ex){
}
finish();
Intent intent = new Intent();
intent.setClass(sPlashScreen, MainActivity.class);
startActivity(intent);
}
};
mSplashThread.start();
}
@Override
public boolean onTouchEvent(MotionEvent evt)
{
if(evt.getAction() == MotionEvent.ACTION_DOWN)
{
synchronized(mSplashThread){
mSplashThread.notifyAll();
}
}
return true;
}
}
MainActivity 类
MainActivity class
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.app.Activity;
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, 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();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
随意删除此任务不需要的任何类或文件.谢谢
Feel free to delete any classes or files not needed for this task. Thanks
推荐答案
您可以使用两个 .xml 文件来淡入新 Activity 并淡出当前 Activity.
You could use two .xml files to fade in a new Activity and fade out the current Activity.
fade_in.xml
fade_in.xml
<?xml version="1.0" encoding="utf-8"?>
<alpha xmlns:android="http://schemas.android.com/apk/res/android"
android:interpolator="@android:anim/accelerate_interpolator"
android:fromAlpha="0.0" android:toAlpha="1.0"
android:duration="500" />
fade_out.xml
fade_out.xml
<?xml version="1.0" encoding="utf-8"?>
<alpha xmlns:android="http://schemas.android.com/apk/res/android"
android:interpolator="@android:anim/accelerate_interpolator"
android:fromAlpha="1.0" android:toAlpha="0.0"
android:fillAfter="true"
android:duration="500" />
在这样的代码中使用它:(在您的活动中)
Use it in code like that: (Inside your Activity)
Intent intent = new Intent();
intent.setClass(sPlashScreen, MainActivity.class);
startActivity(intent);
overridePendingTransition(R.anim.fade_in, R.anim.fade_out);
以上代码会淡出当前活动的Activity,淡入新启动的Activity.
The above code will fade out the currently active Activity and fade in the newly started Activity.
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