Question

我在Android Studio中使用循环动态创建按钮。但是这些按钮彼此重叠。目前我已将循环设置为运行一定次数，最终我将使用数据库中的数字，这可能会有所不同。我试图设置这些按钮，这样无论按钮数量多少，它们总是水平居中。包括吐司，因为我无法看到是否创建了多个按钮，因为它们都在彼此之上。

   LinearLayout layout = (LinearLayout)findViewById(R.id.space_layout);


    for (int i = 0; i <= 3; i++ ){
        Button myButton = new Button(this);// initialization of new button
        myButton.setText("");
        myButton.setLayoutParams(new RelativeLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT));
        layout.addView(myButton);
        Toast.makeText(this, "Button Created" + i, Toast.LENGTH_SHORT).show();
    }

Answer 1

试试这个并告诉我这是否是您正在寻找的：

MainActivity.java

package com.example.myapplication;

import android.app.Activity;
import android.os.Bundle;
import android.widget.Button;
import android.widget.LinearLayout;

public class MainActivity extends Activity {

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

        int number = 5; // number of buttons
        LinearLayout layout = (LinearLayout) findViewById(R.id.space_layout);
        for (int i = 0; i < number; i++) {
            Button myButton = new Button(this);
            myButton.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT, 1f));
            myButton.setText("btn " + i);
            layout.addView(myButton);
        }
    }

}

activity_main.xml中

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <LinearLayout
        android:id="@+id/space_layout"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:orientation="horizontal" />

</RelativeLayout>

Android Studio：在循环中创建的定位按钮

1 个答案: