Android，继承DialogFragment重写了onCreateView方法。在onCreateView方法中初始化了一些View的数据。当再次通过show(FragmentManager, String)显示时Dialog中View中的数据是上次手动设置的数据，在onCreateView方法中初始化数据的代码好像运行了却没有效果。
是不是我的写法有问题，还是因为在Android 4.2和4.4中对话框自动保存之前输入的内容的特性？如果是后者，该怎么不让它自动保存？
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更新：
想到了生命周期后，上网查了一下，调试后发现在onViewStateRestored(Bundle savedInstanceState)方法中放入设置监听方法和设置初始值的代码比较好。不过系统还是会在onActivityCreated(Bundle savedInstanceState)和onViewStateRestored(Bundle savedInstanceState)之间初始化上次手动设置的数据。这种行为在某些情况下很让人不爽啊。有谁知道怎么不让它发生？或者有更好的方法，感谢告知。
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增加代码：
package sept.test;
import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.View;
import android.view.Menu;
import android.view.MenuItem;
public class MainActivity extends AppCompatActivity {
private TestDialog dialog;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
.setAction("Action", null).show();
}
});
dialog = new TestDialog();
}
@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) {
dialog.show(getFragmentManager(), "TestDialog");
return true;
}
return super.onOptionsItemSelected(item);
}
}
package sept.test;
import android.app.Activity;
import android.app.Dialog;
import android.app.DialogFragment;
import android.content.Context;
import android.content.DialogInterface;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.Window;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.EditText;
import android.widget.LinearLayout;
/**
* Created by TrapaQuad on 2015.12.22.
*/
public class TestDialog extends DialogFragment
implements CompoundButton.OnCheckedChangeListener, View.OnClickListener {
private static final String TAG = "TestDialog";
private LinearLayout llRoot;
private CheckBox mCheckBox;
private EditText mEditText;
private Boolean mChecked;
@Override
public void onAttach(Activity activity) {
Log.e(TAG, "onAttach(Activity)");
super.onAttach(activity);
}
@Override
public void onAttach(Context context) {
Log.e(TAG, "onAttach(Context)");
super.onAttach(context);
}
@Override
public void onCreate(Bundle savedInstanceState) {
Log.e(TAG, "onCreate");
super.onCreate(savedInstanceState);
}
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
Log.e(TAG, "onCreateDialog");
return super.onCreateDialog(savedInstanceState);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
Log.e(TAG, "onCreateView");
getDialog().requestWindowFeature(Window.FEATURE_NO_TITLE);
llRoot = (LinearLayout)inflater.inflate(R.layout.dialog_test, container);
return llRoot;
}
@Override
public void onViewCreated(View view, Bundle savedInstanceState) {
Log.e(TAG, "onViewCreated");
super.onViewCreated(view, savedInstanceState);
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
Log.e(TAG, "onActivityCreated");
super.onActivityCreated(savedInstanceState);
mCheckBox = (CheckBox)llRoot.findViewById(R.id.checkBox);
mEditText = (EditText)llRoot.findViewById(R.id.editText);
mCheckBox.setOnCheckedChangeListener(this);
Log.e(TAG, "-----onActivityCreated--------:"+ mChecked+"|"+mEditText.getText()+"|");
}
@Override
public void onViewStateRestored(Bundle savedInstanceState) {
Log.e(TAG, "-----onViewStateRestored--------:"+ mChecked+"|"+mEditText.getText()+"|");
Log.e(TAG, "onViewStateRestored");
Log.e(TAG, "-------------:"+ mChecked+mEditText.getText());
mCheckBox.setChecked(true);
mEditText.setText("QSSB");
Log.e(TAG, "-sdsdsdsdsdsds------------:"+ mChecked+mEditText.getText());
super.onViewStateRestored(savedInstanceState);
}
@Override
public void onStart() {
Log.e(TAG, "onStart");
Log.e(TAG, "-------------:"+ mChecked);
super.onStart();
}
@Override
public void onResume() {
Log.e(TAG, "onResume");
Log.e(TAG, "-------------:"+ mChecked);
super.onResume();
Log.e(TAG, "-------------:" + mChecked);
}
@Override
public void onCancel(DialogInterface dialog) {
Log.e(TAG, "onCancel");
mEditText.setText("onCancel");
super.onCancel(dialog);
}
@Override
public void onDismiss(DialogInterface dialog) {
Log.e(TAG, "onDismiss");
mEditText.setText("onDismiss");
super.onDismiss(dialog);
}
@Override
public void onPause() {
Log.e(TAG, "onPause");
mEditText.setText("onPause");
super.onPause();
}
@Override
public void onStop() {
Log.e(TAG, "onStop");
mEditText.setText("onStop");
super.onStop();
mEditText.setText("onStop2");
}
@Override
public void onDestroyView() {
Log.e(TAG, "onDestroyView");
mEditText.setText("onDestroyView");
super.onDestroyView();
}
@Override
public void onDestroy() {
Log.e(TAG, "onDestroy");
mEditText.setText("onDestroy");
super.onDestroy();
}
@Override
public void onDetach() {
Log.e(TAG, "onDetach");
mEditText.setText("onDetach");
super.onDetach();
Log.e(TAG, "-------------:" + mChecked+mEditText.getText());
}
@Override
public void onSaveInstanceState(Bundle outState) {
Log.e(TAG, "onSaveInstanceState");
super.onSaveInstanceState(outState);
}
@Override
public void onClick(View v) {
}
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
Log.e(TAG, "onCheckedChanged");
mChecked = isChecked;
}
}调用show方法只是把之前创建的DialogFragment对象推到栈顶，而不是重新创建一个DialogFragment对象，不会重走onCreateView方法，之前对象持有的数据当然还保存着。想要不保存数据内容，重新new一个DialogFragment对象啊