改变背景颜色与Android的共享preference [英] Changing background colour with SharedPreference in Android
本文介绍了改变背景颜色与Android的共享preference的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我要改变我的应用程序的背景颜色与按钮。它应该,两种颜色之间切换,为了这个,我使用的共享preference,但>我还不知道如何存储布尔切换..
我得到这个:
公共无效方法1(查看视图){ 共享preferences设置= getShared preferences(preFS,0);
共享preferences.Editor编辑= settings.edit();
editor.putBoolean(作案,作案!);
editor.commit();
如果(settings.getBoolean(作案,FALSE)){
INT I = Color.GREEN;
的LinearLayout布局=(的LinearLayout)findViewById(R.id.mylayout);
layout.setBackgroundColor(ⅰ);
}其他{
INT J = Color.BLUE;
的LinearLayout布局=(的LinearLayout)findViewById(R.id.mylayout);
layout.setBackgroundColor(J);
}
}
解决方案
要保存,并从$ P $布尔PFS可以使用这样的:
公共类设置
{私有静态最后弦乐preFS_NAME =com.yourpackage.Settings;
私有静态最后弦乐MODUS =Settings.modus;。私有静态最后一个共享preferences preFS = App.getContext()getShared preferences(preFS_NAME,Context.MODE_PRIVATE);私人设置()
{}公共静态无效setUseGreen(布尔useGreen)
{
编辑编辑= prefs.edit(); edit.putBoolean(MODUS,useGreen);
edit.commit();
}公共静态布尔useGreen()
{
返回prefs.getBoolean(MODUS,FALSE);
}
}
然后在你的活动只是用:
@覆盖
保护无效的onCreate(捆绑savedInstanceState)
{
super.onCreate(savedInstanceState);
this.setContentView(R.layout.your_layout); initModus();
}公共无效initModus()
{
复选框作案=(复选框)findViewById(R.id.yourChackBoxId);
modus.setOnCheckedChangeListener(新CompoundButton.OnCheckedChangeListener(){
@覆盖
公共无效onCheckedChanged(CompoundButton compoundButton,布尔检查)
{
Settings.setUseGreen(选中);
changeColor(选中);
}
}); 布尔useGreen = Settings.useGreen();
modus.setChecked(useGreen);
}
私人无效changeColor(布尔选中)
{
的LinearLayout布局=(的LinearLayout)findViewById(R.id.mylayout); 如果(useGreen){
INT绿色= Color.GREEN;
layout.setBackgroundColor(绿色);
}其他{
INT蓝色= Color.BLUE;
layout.setBackgroundColor(蓝色);
}
}
I want to change the background color of my app with a button. It should switch between two colors, for this I used SharedPreference, but >I don't know yet how to store the boolean for switching.. I got this:
public void method1(View view) {
SharedPreferences settings = getSharedPreferences(PREFS, 0);
SharedPreferences.Editor editor = settings.edit();
editor.putBoolean("modus", !modus);
editor.commit();
if (settings.getBoolean("modus", false)) {
int i = Color.GREEN;
LinearLayout layout = (LinearLayout) findViewById(R.id.mylayout);
layout.setBackgroundColor(i);
} else {
int j = Color.BLUE;
LinearLayout layout = (LinearLayout) findViewById(R.id.mylayout);
layout.setBackgroundColor(j);
}
}
解决方案
To save and get boolean from prefs you can use this :
public class Settings
{
private static final String PREFS_NAME = "com.yourpackage.Settings";
private static final String MODUS = "Settings.modus";
private static final SharedPreferences prefs = App.getContext().getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE);
private Settings()
{
}
public static void setUseGreen(boolean useGreen)
{
Editor edit = prefs.edit();
edit.putBoolean(MODUS, useGreen);
edit.commit();
}
public static boolean useGreen()
{
return prefs.getBoolean(MODUS, false);
}
}
And then in your Activity just use this :
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
this.setContentView(R.layout.your_layout);
initModus();
}
public void initModus()
{
CheckBox modus = (CheckBox)findViewById(R.id.yourChackBoxId);
modus.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton compoundButton, boolean checked)
{
Settings.setUseGreen(checked);
changeColor(checked);
}
});
boolean useGreen = Settings.useGreen();
modus.setChecked(useGreen);
}
private void changeColor(boolean checked)
{
LinearLayout layout = (LinearLayout) findViewById(R.id.mylayout);
if (useGreen) {
int green = Color.GREEN;
layout.setBackgroundColor(green);
} else {
int blue = Color.BLUE;
layout.setBackgroundColor(blue);
}
}
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