我有两个 Activity ,都有相似的布局,即复选框。我想同步两个 Activity 中复选框的状态。我该怎么做?
Settings.class
package com.example.myapp
import android.app.Activity;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.ProgressBar;
import android.widget.Toast;
public class Settings extends Activity {
CheckBox checkBox_one = null;
CheckBox checkBox_two = null;
CheckBox checkBox_three = null;
CheckBox checkBox_four = null;
CheckBox checkBox_five = null;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_settings);
//SAVE CHECKBOX STATE//
checkBox_one = (CheckBox) findViewById(R.id.checkBox1);
boolean isChecked = getBooleanFromPreferences("isChecked");
Log.i("start",""+isChecked);
checkBox_one.setChecked(isChecked);
//checkBox_one.setChecked(true);//Enable By Default
checkBox_one.setOnCheckedChangeListener(new OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton view, boolean isChecked) {
Log.i("boolean",""+isChecked);
Settings.this.putBooleanInPreferences(isChecked,"isChecked");
}
});
checkBox_two = (CheckBox) findViewById(R.id.checkBox2);
boolean isCheckedTwo = getBooleanFromPreferences("isCheckedTwo");
checkBox_two.setChecked(isCheckedTwo );
//checkBox_two.setChecked(true);//Enable By Default
checkBox_two.setOnCheckedChangeListener(new OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton view, boolean isChecked) {
Settings.this.putBooleanInPreferences(isChecked,"isCheckedTwo");
}
});
checkBox_three = (CheckBox) findViewById(R.id.checkBox3);
boolean isCheckedThree = getBooleanFromPreferences("isCheckedThree");
checkBox_three.setChecked(isCheckedThree );
checkBox_three.setOnCheckedChangeListener(new OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton view, boolean isChecked) {
Settings.this.putBooleanInPreferences(isChecked,"isCheckedThree");
}
});
checkBox_four = (CheckBox) findViewById(R.id.checkBox4);
boolean isCheckedFour = getBooleanFromPreferences("isCheckedFour");
checkBox_four.setChecked(isCheckedFour );
//checkBox_four.setChecked(true);//Enable By Default
checkBox_four.setOnCheckedChangeListener(new OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton view, boolean isChecked) {
Settings.this.putBooleanInPreferences(isChecked,"isCheckedFour");
}
});
checkBox_five = (CheckBox) findViewById(R.id.checkBox5);
boolean isCheckedFive = getBooleanFromPreferences("isCheckedFive");
checkBox_five.setChecked(isCheckedFive );
checkBox_five.setOnCheckedChangeListener(new OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton view, boolean isChecked) {
Settings.this.putBooleanInPreferences(isChecked,"isCheckedFive");
}
});
}
public void putBooleanInPreferences(boolean isChecked,String key){
SharedPreferences sharedPreferences = this.getPreferences(Activity.MODE_PRIVATE);
SharedPreferences.Editor editor = sharedPreferences.edit();
editor.putBoolean(key, isChecked);
editor.commit();
}
public boolean getBooleanFromPreferences(String key){
SharedPreferences sharedPreferences = this.getPreferences(Activity.MODE_PRIVATE);
Boolean isChecked = sharedPreferences.getBoolean(key, false);
return isChecked;
}
//-------------------------//
@Override
public void onBackPressed()
{
// Stop back button Functioning
}
public void openrate1(View view) {
Intent intent = new Intent(this, Rate.class);
startActivity(intent);
}
public void gotohome(View view) {
Intent intent = new Intent(this, MainActivity.class);
startActivity(intent);
}
public void savesettings(View view) {
Toast toast=Toast.makeText(this, "Settings successfully saved!", Toast.LENGTH_LONG);
toast.show();
}
}
Progress.class
package com.example.myapp;
import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.view.View;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.ProgressBar;
public class Progress extends Activity {
ProgressBar progressBar1;
ProgressBar progressBar2;
CheckBox checkBox1;
CheckBox checkBox2;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_progress);
progressBar1 = (ProgressBar) findViewById(R.id.progressBar1);
progressBar2 = (ProgressBar) findViewById(R.id.progressBar2);
checkBox1 = (CheckBox) findViewById(R.id.checkBox1);
checkBox2 = (CheckBox) findViewById(R.id.checkBox2);
checkBox1.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
updateProgressBars();
}
});
checkBox2.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
updateProgressBars();
}
});
}
public void updateProgressBars() {
progressBar1.setVisibility(View.GONE);
progressBar2.setVisibility(View.GONE);
if (checkBox1.isChecked() && checkBox2.isChecked()) {
progressBar2.setVisibility(View.VISIBLE);
} else if (checkBox1.isChecked()) {
progressBar1.setVisibility(View.VISIBLE);
}
}
}
最佳答案
您可以为此使用SharedPreferences
。在每个 Activity
的 OnCreate()
方法中。您可以检查 SharedPreferences
的值是否执行。如果它执行,则根据它设置 CheckBox
的状态。
您可以在 CheckBox
事件监听器 OnCheckedChangeListener()
上设置 SharedPreference
值。
关于android - 如何在两个 Activity 之间同步 CheckBox 状态?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/23074120/