Android:密碼顯示隱藏
activity_main.xml的完整代碼:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<EditText
android:id="@+id/editText1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:ems="10"
android:inputType="textPassword" >
<requestFocus />
</EditText>
<CheckBox
android:id="@+id/checkBox1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="顯示密碼" />
</LinearLayout>
MainActivity.java裡的完整代碼:
import android.app.Activity;
import android.os.Bundle;
import android.text.method.HideReturnsTransformationMethod;
import android.text.method.PasswordTransformationMethod;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.TextView;
public class MainActivity extends Activity {
private TextView editText1;
private CheckBox checkBox1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
editText1 =(TextView) findViewById(R.id.editText1);
checkBox1=(CheckBox) findViewById(R.id.checkBox1);
checkBox1.setOnCheckedChangeListener(new OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
// TODO Auto-generated method stub
if(isChecked){
//如果選中,顯示密碼
editText1.setTransformationMethod(HideReturnsTransformationMethod.getInstance());
}else{
//否則隱藏密碼
editText1.setTransformationMethod(PasswordTransformationMethod.getInstance());
}
}
});
}
}
關鍵是:
editText1.setTransformationMethod(HideReturnsTransformationMethod.getInstance());
editText1.setTransformationMethod(PasswordTransformationMethod.getInstance());