我正在尝试通过学习Java和Android Studio来学习Android编程,并且我制作了应用我学到的东西的程序。无论如何,试图创建一个简单的文字游戏,我遇到了问题。我希望我在第27-35行的循环在屏幕上显示5个破折号,但它只显示一个。我之前使用过Visual Studio,那里更简单。我错过了什么?我不确定该程序是否会创建五个文本视图并将它们放在一个地方,或者只创建一个。
这是我的MainActivity.java:
package com.mycompany.myapplication;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.RelativeLayout;
import android.widget.TextView;
import android.graphics.Color;
public class MainActivity extends ActionBarActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
//The GUI related codes and definitions are here
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
MainGame meGuess = new MainGame();
final String dashForTextFields = "-";
meGuess.setGuessingWord();
RelativeLayout mainGameLayout = (RelativeLayout) findViewById(R.id.myLayout);
RelativeLayout.LayoutParams myTextContainer = new RelativeLayout.LayoutParams(
RelativeLayout.LayoutParams.WRAP_CONTENT,
RelativeLayout.LayoutParams.WRAP_CONTENT);
TextView[] myTextViews = new TextView[meGuess.getGuessingWordLength()];
for(int i = 0; i < meGuess.getGuessingWordLength(); i++)
{
myTextViews[i] = new TextView(this);
myTextViews[i].setText(dashForTextFields);
myTextViews[i].setTextSize(100);
myTextContainer.leftMargin = 10 * i;
myTextContainer.topMargin = 50;
mainGameLayout.addView(myTextViews[i], myTextContainer);
}
}
@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);
}
}
and here's MainGame class:
package com.mycompany.myapplication;
public class MainGame
{
private String wordToBeGuessed;
public String getGuessingWord()
{
return wordToBeGuessed;
}
public void setGuessingWord()
{
//IMPORTANT NOTE: This method should be updated//
wordToBeGuessed = "apple";
}
public int getGuessingWordLength()
{
return wordToBeGuessed.length();
}
}
答案 0 :(得分:1)
我认为您的问题在于您为所有文本视图重复使用相同的myTextContainer
。如果你把这些行:
RelativeLayout.LayoutParams myTextContainer = new RelativeLayout.LayoutParams(
RelativeLayout.LayoutParams.WRAP_CONTENT,
RelativeLayout.LayoutParams.WRAP_CONTENT);
里面 for
- 循环,你应该没问题。
在任何情况下,这是您应该使用线性布局(水平方向)而不是相对布局的典型示例。 Android Studio还有一个布局编辑器 - 绘制界面通常比编程更容易。