Android 如何使用 FragmentManager 替换已弃用的 showDialog
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How to use FragmentManager to substitute the deprecated showDialog
提问by AndreaF
I am using the method displayDialog... it works but Eclipse shows me a warning on this:
我正在使用方法 displayDialog ... 它有效，但 Eclipse 向我显示了一个警告：
showDialog(showRetry ? 1 : 0);
Method:
方法：
private void displayDialog(final boolean showRetry) {
mHandler.post(new Runnable() {
public void run() {
setProgressBarIndeterminateVisibility(false);
showDialog(showRetry ? 1 : 0);
}
});
}
Searching I have found similar question in which seen that now there is the FragmentManagerthat can be used to avoid the problem, but I haven't understand how I could use to fix the problem in my specific scenario maintaining retro-compatibility with Froyo and GingerBread.
搜索我发现了类似的问题，其中看到现在有可以用来避免问题的FragmentManager，但我不明白如何在我的特定场景中使用来解决问题，同时保持与 Froyo 和 GingerBread 的复古兼容性.
Could you help me?
你可以帮帮我吗？
The full class code is:
完整的类代码是：
public class Home extends Activity {
private static final String BASE64_PUBLIC_KEY = "mykeywithoutspaces";
// Generate your own 20 random bytes, and put them here.
private static final byte[] SALT = new byte[] {
-00, 00, 30, -2, -58, -57, 00, -64, 51, 32, -95, -45, 13, -6, -36, -15, -11, 32, -64,
89
};
private TextView mStatusText;
private Button mCheckLicenseButton;
private LicenseCheckerCallback mLicenseCheckerCallback;
private LicenseChecker mChecker;
// A handler on the UI thread.
private Handler mHandler;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);
setContentView(R.layout.main);
mStatusText = (TextView) findViewById(R.id.status_text);
buttonNewDoc = (ImageButton) findViewById(R.id.btNewDoc);
buttonNewDoc.setOnClickListener(mNewDoc);
mCheckLicenseButton = (Button) findViewById(R.id.check_license_button);
mCheckLicenseButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
doCheck();
}
});
mHandler = new Handler();
// Try to use more data here. ANDROID_ID is a single point of attack.
String deviceId = Secure.getString(getContentResolver(), Secure.ANDROID_ID);
// Library calls this when it's done.
mLicenseCheckerCallback = new MyLicenseCheckerCallback();
// Construct the LicenseChecker with a policy.
mChecker = new LicenseChecker(
this, new ServerManagedPolicy(this,
new AESObfuscator(SALT, getPackageName(), deviceId)),
BASE64_PUBLIC_KEY);
doCheck();
}
protected Dialog onCreateDialog(int id) {
final boolean bRetry = id == 1;
return new AlertDialog.Builder(this)
.setTitle(R.string.unlicensed_dialog_title)
.setMessage(bRetry ? R.string.unlicensed_dialog_retry_body : R.string.unlicensed_dialog_body)
.setPositiveButton(bRetry ? R.string.retry_button : R.string.buy_button, new DialogInterface.OnClickListener() {
boolean mRetry = bRetry;
public void onClick(DialogInterface dialog, int which) {
if ( mRetry ) {
doCheck();
} else {
Intent marketIntent = new Intent(Intent.ACTION_VIEW, Uri.parse(
"http://market.android.com/details?id=" + getPackageName()));
startActivity(marketIntent);
}
}
})
.setNegativeButton(R.string.quit_button, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
finish();
}
}).create();
}
private void doCheck() {
buttonNewDoc.setEnabled(false);
mCheckLicenseButton.setEnabled(false);
setProgressBarIndeterminateVisibility(true);
mStatusText.setText(R.string.checking_license);
mChecker.checkAccess(mLicenseCheckerCallback);
}
private void displayResult(final String result) {
mHandler.post(new Runnable() {
public void run() {
mStatusText.setText(result);
setProgressBarIndeterminateVisibility(false);
mCheckLicenseButton.setEnabled(true);
}
});
}
private void displayDialog(final boolean showRetry) {
mHandler.post(new Runnable() {
public void run() {
setProgressBarIndeterminateVisibility(false);
showDialog(showRetry ? 1 : 0);
}
});
}
private class MyLicenseCheckerCallback implements LicenseCheckerCallback {
public void allow(int policyReason) {
if (isFinishing()) {
// Don't update UI if Activity is finishing.
return;
}
// Should allow user access.
displayResult(getString(R.string.allow));
buttonNewDoc.setEnabled(false);
}
public void dontAllow(int policyReason) {
if (isFinishing()) {
// Don't update UI if Activity is finishing.
return;
}
displayResult(getString(R.string.dont_allow));
// Should not allow access. In most cases, the app should assume
// the user has access unless it encounters this. If it does,
// the app should inform the user of their unlicensed ways
// and then either shut down the app or limit the user to a
// restricted set of features.
// In this example, we show a dialog that takes the user to Market.
// If the reason for the lack of license is that the service is
// unavailable or there is another problem, we display a
// retry button on the dialog and a different message.
displayDialog(policyReason == Policy.RETRY);
}
public void applicationError(int errorCode) {
if (isFinishing()) {
// Don't update UI if Activity is finishing.
return;
}
String result = String.format(getString(R.string.application_error), errorCode);
displayResult(result);
}
}
@Override
protected void onDestroy() {
super.onDestroy();
mChecker.onDestroy();
}
}
回答by Sam Dozor
Your activity should subclass FragmentActivity, which can be found in the v4 support library, which you should add to your project. You then can get a reference to the FragmentManagerusing getSupportFragmentManager()to show a DialogFragment. You'll have to create a DialogFragmentclass with the layout and the logic that your dialog requires. Here's how you'd show it from your FragmentActivity:
您的活动应该是 子类FragmentActivity，它可以在v4 支持库中找到，您应该将其添加到您的项目中。然后，您可以获得对FragmentManagerusing的引用getSupportFragmentManager()以显示DialogFragment. 您必须使用DialogFragment对话框所需的布局和逻辑创建一个类。以下是您如何从您的FragmentActivity:
FragmentManager fm = getSupportFragmentManager();
YourDialogFragment yourDialog = new YourDialogFragment();
yourDialog.show(fm, "some_optional_tag");
Here's an overview: http://android-developers.blogspot.com/2012/05/using-dialogfragments.html
这是一个概述：http: //android-developers.blogspot.com/2012/05/using-dialogfragments.html
回答by bugtsa
Kotlin:
科特林：
requireActivity().supportFragmentManager
回答by Rodrigo T.
What google seems to use in this example is to change the "protected Dialog onCreateDialog (int id) {" so that it is called internally always which is called "showDialog (showRetry? 1: 0);" creating default dialog for retry/cancel.
谷歌在这个例子中似乎使用的是更改“protected Dialog onCreateDialog (int id) {”，以便在内部始终调用它，称为“showDialog (showRetry? 1: 0);” 创建用于重试/取消的默认对话框。
I suggest to use the following code, creating a handy method that creates the standard dialog, and changing or removing the "onCreateDialog()" as this becomes unnecessary.
我建议使用以下代码，创建一个方便的方法来创建标准对话框，并更改或删除“onCreateDialog()”，因为这变得不必要。
protected Dialog onCreateDialog(int id) {
return CreateDialogRetryCancel(id);
}
public Dialog CreateDialogRetryCancel(int id) {
final boolean bRetry = id == 1;
return new AlertDialog.Builder(this)
.setTitle(R.string.unlicensed_dialog_title)
.setMessage(bRetry ? R.string.unlicensed_dialog_retry_body : R.string.unlicensed_dialog_body)
.setPositiveButton(bRetry ? R.string.retry_button : R.string.buy_button, new DialogInterface.OnClickListener() {
boolean mRetry = bRetry;
public void onClick(DialogInterface dialog, int which) {
if ( mRetry ) {
doCheck();
} else {
Intent marketIntent = new Intent(Intent.ACTION_VIEW, Uri.parse(
"http://market.android.com/details?id=" + getPackageName()));
startActivity(marketIntent);
}
}
})
.setNegativeButton(R.string.quit_button, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
finish();
}
}).create();
}
private void displayDialog(final boolean showRetry) {
mHandler.post(new Runnable() {
public void run() {
setProgressBarIndeterminateVisibility(false);
CreateDialogRetryCancel(showRetry ? 1 : 0).show();
//showDialog(showRetry ? 1 : 0);
mCheckLicenseButton.setEnabled(true);
}
});
}
回答by Aanchal Garg
FragmentManager fm = getSupportFragmentManager();
yourDialog.show(fm, "some_optional_tag");
The getSupportFragmentManager()was accepted only when the correct class is imported while making DialogFragment i.e import android.support.v4.app.DialogFragment
将getSupportFragmentManager()被接受，只有当正确的类是进口的同时使DialogFragment即import android.support.v4.app.DialogFragment
