Question

您好我一直在寻找方法让我的Android应用加载StartActivity.java 5秒钟，然后在5秒钟后加载到MainActivity.java。我找到的任何例子都不适合我。所以想知道是否有人能指出我正确的方向。

任何帮助都将不胜感激。

StartActivity.java

package com.example.testerrquin.euro2016fanguide;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;

public class StartActivity extends AppCompatActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_start);

new CountDownTimer(5000, 1000) {

        public void onTick(long millisUntilFinished) {


        }

        public void onFinish() {

        }

    }.start();
}}

的AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>`<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.testerrquin.euro2016fanguide" >

<application
    android:allowBackup="true"
    android:icon="@mipmap/ic_launcher"
    android:label="@string/app_name"
    android:supportsRtl="true"
    android:theme="@style/AppTheme" >
    <activity
        android:name=".StartActivity"
        android:configChanges="orientation|keyboardHidden|screenSize"
        android:label="@string/title_activity_start"
        android:theme="@style/FullscreenTheme" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
</application>

提前感谢任何答案。

Answer 1

试一试。它适用于我的应用程序。

new Handler().postDelayed(new Runnable() {
        @Override
        public void run() {
            Intent start = new Intent(StartActivity.this, MainActivity.class);
            startActivity(start);
            finish();
        }
    }, 5000);

Answer 2

试试这个

public class StartActivity extends AppCompatActivity {

    protected int SECONDS = 5;
    Handler handler = new Handler();


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_start);

        handler.removeCallbacks(runnable);
        handler.postDelayed(runnable, 1000);

    }

    private Runnable runnable = new Runnable() {
        public void run() {
            long currentMilliseconds = System.currentTimeMillis();
            SECONDS--;
            if (SECONDS > 0) {
                handler.postAtTime(this, currentMilliseconds);
                handler.postDelayed(runnable, 1000);
            } else {
                Intent it = new Intent(StartActivity.this, MainActivity.class);
                startActivity(it);
                handler.removeCallbacks(runnable);
                finish();
            }
        }
    };  
}

主要技巧是使用handler.postDelayed

希望它的帮助!!

Answer 3

只需删除finish（），然后重试

Notice: Undefined index: quantity in C:\wamp64\www\simplesites\ss9_ajax\php\products.php on line 7

5秒后加载新活动

3 个答案: