添加Android的一个按钮，在Java中code [英] Adding a button for Android in Java code

问题描述

是否有可能一个按钮添加到使用Java code的活动布局。如果这是可能的，怎么样？
这是我目前的布局文件：

Is it possible to add a button to an Activity layout with Java code. If this is possible, how? This is my current layout file:

 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/ad_catalog_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@drawable/background"
android:orientation="vertical" >

<com.google.ads.AdView
    xmlns:googleads="http://schemas.android.com/apk/lib/com.google.ads"
    android:id="@+id/ad"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    googleads:adSize="IAB_BANNER"
    googleads:adUnitId="a14d7f7d2180609" />

<TextView
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:text="@string/menu_mods"
    android:textColor="#FFFFFF"
    android:textSize="25sp" />

<ScrollView
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_margin="2dp" >

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical" >

        <Button
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:onClick="enterPeacefulPack"
            android:text="@string/peacefulpack"
            android:paddingBottom="20dp"
            android:paddingLeft="20dp"
            android:paddingRight="20dp"
            android:paddingTop="20dp"
            android:textColor="#FFFFFF"
            android:textSize="25sp" />
    </LinearLayout>
</ScrollView>

如果有可能，我想有即滚动型的内部的LinearLayout内的附加的Java按钮，但如果这是不可能的，也将是可能的得到它在正常的LinearLayout

If it is possible I would like to have the Java-added button inside the LinearLayout that is inside of the ScrollView, but if that isn't possible it would also be possible to get it in the normal LinearLayout.

为什么我希望能够通过Java来获得按钮的原因是，我有一个包含多个对象的数组。对于每一个对象，我想有一个按钮。这个阵列会扩大规模随着时间的推移。

The reason why I want to be able to get buttons through Java is that I have an Array that contains several objects. For every object I would like to have a button. This Array will increase in size over time.

这是我使用的活动文件

package com.wuppy.minecraftmods.mods;

import android.annotation.SuppressLint;
import android.app.ActionBar.LayoutParams;
import android.app.Activity;
import android.content.Intent;
import android.os.Build;
import android.os.Bundle;
import android.support.v4.app.NavUtils;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;

import com.google.ads.AdRequest;
import com.google.ads.AdView;
import com.wuppy.minecraftmods.R;

public class Mods extends Activity
{
@SuppressLint("NewApi")
@Override
protected void onCreate(Bundle savedInstanceState)
{
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_mods);

    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB)
    {
        getActionBar().setDisplayHomeAsUpEnabled(true);
    }

    AdView adView = (AdView) this.findViewById(R.id.ad);
    adView.loadAd(new AdRequest());
}

@Override
public boolean onOptionsItemSelected(MenuItem item)
{
    switch (item.getItemId())
    {
    case android.R.id.home:
        NavUtils.navigateUpFromSameTask(this);
        return true;
    }
    return super.onOptionsItemSelected(item);
}

public void enterPeacefulPack(View view)
{
    Intent intent = new Intent(this, ModPeacefulpack.class);
    startActivity(intent);
}
}

所以，我想通过Java来添加按钮，因为我真的不能做到这一点的XML。这是可能的，如果是怎样？

So I want to add buttons through Java since I can't really do this in xml. Is that possible and if so how?

推荐答案

是的，它可能在你的XML文件中定义一个id为你的LinearLayout。让说：

Yes it possible, define an id to your LinearLayout in your XML file. lets say:

android:id="@+id/buttonContainer"

然后在活动的java code发现这个ID设置的内容查看后：

Then in the Activity java code find this id after setting the contentView:

LinearLayout buttonContainer = (LinearLayout) findViewById(R.id.buttonContainer);

然后创建你的按钮：

Then create your button:

Button button = new Button();

定制你喜欢给提供的方法。

customize it as you like, given the methods provided.

最后把它添加到您的布局：

And finally add it to your layout:

buttonContainer.addView(button);

这篇关于添加Android的一个按钮，在Java中code的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！