Java KeyguardManager.createConfirmDeviceCredentialIntent方法代碼示例

import android.app.KeyguardManager; //導入方法依賴的package包/類
/**
 * Require the user to authenticate using the configured LockScreen before accessing the credentials.
 * This feature is disabled by default and will only work if the device is running on Android version 21 or up and if the user
 * has configured a secure LockScreen (PIN, Pattern, Password or Fingerprint).
 * <p>
 * The activity passed as first argument here must override the {@link Activity#onActivityResult(int, int, Intent)} method and
 * call {@link SecureCredentialsManager#checkAuthenticationResult(int, int)} with the received parameters.
 *
 * @param activity    a valid activity context. Will be used in the authentication request to launch a LockScreen intent.
 * @param requestCode the request code to use in the authentication request. Must be a value between 1 and 255.
 * @param title       the text to use as title in the authentication screen. Passing null will result in using the OS's default value.
 * @param description the text to use as description in the authentication screen. On some Android versions it might not be shown. Passing null will result in using the OS's default value.
 * @return whether this device supports requiring authentication or not. This result can be ignored safely.
 */
public boolean requireAuthentication(@NonNull Activity activity, @IntRange(from = 1, to = 255) int requestCode, @Nullable String title, @Nullable String description) {
    if (requestCode < 1 || requestCode > 255) {
        throw new IllegalArgumentException("Request code must a value between 1 and 255.");
    }
    KeyguardManager kManager = (KeyguardManager) activity.getSystemService(Context.KEYGUARD_SERVICE);
    this.authIntent = Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP ? kManager.createConfirmDeviceCredentialIntent(title, description) : null;
    this.authenticateBeforeDecrypt = ((Build.VERSION.SDK_INT >= Build.VERSION_CODES.M && kManager.isDeviceSecure())
            || (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP && kManager.isKeyguardSecure()))
            && authIntent != null;
    if (authenticateBeforeDecrypt) {
        this.activity = activity;
        this.authenticationRequestCode = requestCode;
    }
    return authenticateBeforeDecrypt;
}
 

import android.app.KeyguardManager; //導入方法依賴的package包/類
void showAuthScreen() {
  KeyguardManager keyguardManager = (KeyguardManager) getSystemService(
      Context.KEYGUARD_SERVICE);

  if (!keyguardManager.isKeyguardSecure()) {
    basicConfigFragment.unlockAppIDandSecret();
    return;
  }

  Intent intent = keyguardManager
      .createConfirmDeviceCredentialIntent(getString(R.string.unlock_auth_title),
          getString(R.string.unlock_auth_explain));

  if (intent != null) {
    startActivityForResult(intent, 1);
  }
}
 

import android.app.KeyguardManager; //導入方法依賴的package包/類
public static void showAuthenticationScreen(Context context, int requestCode) {
	// Create the Confirm Credentials screen. You can customize the title and description. Or
	// we will provide a generic one for you if you leave it null
	Log.e(TAG, "showAuthenticationScreen: ");
	if (context instanceof Activity) {
		Activity app = (Activity) context;
		KeyguardManager mKeyguardManager = (KeyguardManager) app.getSystemService(Context.KEYGUARD_SERVICE);
		if (mKeyguardManager == null) {
			return;
		}
		Intent intent = mKeyguardManager
				.createConfirmDeviceCredentialIntent(
						context.getString(R.string.unlock_screen_title_android),
						context.getString(R.string.unlock_screen_prompt_android));
		if (intent != null) {
			app.startActivityForResult(intent, requestCode);
		} else {
			Log.e(TAG, "showAuthenticationScreen: failed to create intent for auth");
			app.finish();
		}
	} else {
		Log.e(TAG, "showAuthenticationScreen: context is not activity!");
	}
}
 

import android.app.KeyguardManager; //導入方法依賴的package包/類
@TargetApi(Build.VERSION_CODES.M)
private void showAuthenticationScreen(int requestCode) {
    KeyguardManager keyguardManager = getSystemService(KeyguardManager.class);
    Intent intent = keyguardManager.createConfirmDeviceCredentialIntent(getString(R.string.please_login_title), getString(R.string.please_login_message));
    if (intent != null) {
        startActivityForResult(intent, requestCode);
    }
}