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Add self-restore capability to Backup/Restore sample app

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The Backup/Restore sample application now provides a "restore my own
last-known-good data" button.  When it is clicked the app will run the
standard public BackupManager.requestRestore() operation.

(This was the one aspect of the public API that was not previously
exercised by the sample app.)

Change-Id: I8abcfbad4b27b35fe9fafbbb97f89bac1d7a668c
This commit is contained in:
Chris Tate
2010-11-16 15:41:27 -08:00
parent 064a7f0ad8
commit cdcc28a9cb
5 changed files with 83 additions and 43 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
samples/BackupRestore/Android.mk
View File

@@ -10,4 +10,6 @@ LOCAL_PACKAGE_NAME := BackupRestore
LOCAL_SDK_VERSION := current
LOCAL_PROGUARD_FLAG_FILES := proguard.flags
include $(BUILD_PACKAGE)

3
samples/BackupRestore/proguard.flags Normal file
View File

@@ -0,0 +1,3 @@
-keepclassmembers class com.example.android.backuprestore.BackupRestoreActivity {
public void onRestoreButtonClick(android.view.View);
}

98
samples/BackupRestore/res/layout/backup_restore.xml
View File

@@ -16,58 +16,72 @@
<!-- Layout description of the BackupRestore sample's main activity -->
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
android:layout_width="match_parent"
android:layout_height="wrap_content">
<LinearLayout
<ScrollView
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content">
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="1">
<TextView android:text="@string/filling_text"
android:textSize="20dp"
android:layout_marginTop="20dp"
android:layout_marginBottom="10dp"
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
android:layout_height="wrap_content">
<RadioGroup android:id="@+id/filling_group"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="20dp"
android:orientation="vertical">
<TextView android:text="@string/filling_text"
android:textSize="20dp"
android:layout_marginTop="20dp"
android:layout_marginBottom="10dp"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
<RadioButton android:id="@+id/bacon"
android:text="@string/bacon_label"/>
<RadioButton android:id="@+id/pastrami"
android:text="@string/pastrami_label"/>
<RadioButton android:id="@+id/hummus"
android:text="@string/hummus_label"/>
<RadioGroup android:id="@+id/filling_group"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="20dp"
android:orientation="vertical">
</RadioGroup>
<RadioButton android:id="@+id/bacon"
android:text="@string/bacon_label"/>
<RadioButton android:id="@+id/pastrami"
android:text="@string/pastrami_label"/>
<RadioButton android:id="@+id/hummus"
android:text="@string/hummus_label"/>
<TextView android:text="@string/extras_text"
android:textSize="20dp"
android:layout_marginTop="20dp"
android:layout_marginBottom="10dp"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
</RadioGroup>
<CheckBox android:id="@+id/mayo"
android:text="@string/mayo_text"
android:layout_marginLeft="20dp"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
<TextView android:text="@string/extras_text"
android:textSize="20dp"
android:layout_marginTop="20dp"
android:layout_marginBottom="10dp"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
<CheckBox android:id="@+id/tomato"
android:text="@string/tomato_text"
android:layout_marginLeft="20dp"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
<CheckBox android:id="@+id/mayo"
android:text="@string/mayo_text"
android:layout_marginLeft="20dp"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
</LinearLayout>
<CheckBox android:id="@+id/tomato"
android:text="@string/tomato_text"
android:layout_marginLeft="20dp"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
</ScrollView>
</LinearLayout>
</ScrollView>
<Button android:id="@+id/restore_button"
android:text="@string/restore_text"
android:onClick="onRestoreButtonClick"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:layout_weight="0" />
</LinearLayout>

2
samples/BackupRestore/res/values/strings.xml
View File

@@ -23,4 +23,6 @@
<string name="extras_text">Extras:</string>
<string name="mayo_text">Mayonnaise\?</string>
<string name="tomato_text">Tomato\?</string>
<string name="restore_text">Restore last data</string>
</resources>

21
samples/BackupRestore/src/com/example/android/backuprestore/BackupRestoreActivity.java
View File

@@ -18,8 +18,10 @@ package com.example.android.backuprestore;
import android.app.Activity;
import android.app.backup.BackupManager;
import android.app.backup.RestoreObserver;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.RadioGroup;
@@ -249,4 +251,21 @@ public class BackupRestoreActivity extends Activity {
mBackupManager.dataChanged();
}
}
/**
* Click handler, designated in the layout, that runs a restore of the app's
* most recent data when the button is pressed.
*/
public void onRestoreButtonClick(View v) {
Log.v(TAG, "Requesting restore of our most recent data");
mBackupManager.requestRestore(
new RestoreObserver() {
public void restoreFinished(int error) {
/** Done with the restore! Now draw the new state of our data */
Log.v(TAG, "Restore finished, error = " + error);
populateUI();
}
}
);
}
}