在Android O中在主屏幕上创建快捷方式

Question

自Android O起,com.android.launcher.action.INSTALL_SHORTCUT不推荐使用.在之前的版本中,我使用了它并且它有效.

Intent shortcutintent = new Intent("com.android.launcher.action.INSTALL_SHORTCUT");
shortcutintent.putExtra("duplicate", false);
shortcutintent.putExtra(Intent.EXTRA_SHORTCUT_NAME, getString(R.string.app_name));
Parcelable icon = Intent.ShortcutIconResource.fromContext(getApplicationContext(), R.mipmap.ic_launcher);
shortcutintent.putExtra(Intent.EXTRA_SHORTCUT_ICON_RESOURCE, icon);
shortcutintent.putExtra(Intent.EXTRA_SHORTCUT_INTENT, new Intent(getApplicationContext(), MainActivity.class));
sendBroadcast(shortcutintent);

但现在这不再起作用了.没有创建主屏幕快捷方式.如何在Android O中创建主屏幕快捷方式？在源代码中它说@deprecated Replaced with {@link android.content.pm.ShortcutManager#createShortcutResultIntent}.所以我尝试了这个:

ShortcutManager shortcutManager = getSystemService(ShortcutManager.class);
ShortcutInfo.Builder mShortcutInfo = new ShortcutInfo.Builder(MainActivity.this, getString(R.string.app_name));
mShortcutInfo.setShortLabel(getString(R.string.app_name));
mShortcutInfo.setLongLabel(getString(R.string.app_name));
mShortcutInfo.setIcon(Icon.createWithResource(MainActivity.this, R.mipmap.ic_launcher));
shortcutManager.createShortcutResultIntent(mShortcutInfo.build());

我收到错误,必须提供快捷方式:

10-17 23:08:00.305 13256-13256/com.audiorecorder.wel.voicerecorder E/AndroidRuntime: FATAL EXCEPTION: main
                                                                                 Process: com.wel.shortcut, PID: 13256
                                                                                 java.lang.RuntimeException: Unable to start activity ComponentInfo{com.wel.shortcut/com.wel.shortcut.MainActivity}: java.lang.NullPointerException: Shortcut Intent must be provided
                                                                                     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2817)
                                                                                     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2892)
                                                                                     at android.app.ActivityThread.-wrap11(Unknown Source:0)
                                                                                     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1593)
                                                                                     at android.os.Handler.dispatchMessage(Handler.java:105)
                                                                                     at android.os.Looper.loop(Looper.java:164)
                                                                                     at android.app.ActivityThread.main(ActivityThread.java:6541)
                                                                                     at java.lang.reflect.Method.invoke(Native Method)
                                                                                     at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240)
                                                                                     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:767)
                                                                                  Caused by: java.lang.NullPointerException: Shortcut Intent must be provided
                                                                                     at android.os.Parcel.readException(Parcel.java:1948)
                                                                                     at android.os.Parcel.readException(Parcel.java:1888)
                                                                                     at android.content.pm.IShortcutService$Stub$Proxy.createShortcutResultIntent(IShortcutService.java:635)
                                                                                     at android.content.pm.ShortcutManager.createShortcutResultIntent(ShortcutManager.java:1043)
                                                                                     at voicerecorder.wel.audiorecorder.com.voicerecorder.MainActivity.onCreate(MainActivity.java:80)
                                                                                     at android.app.Activity.performCreate(Activity.java:6975)
                                                                                     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1213)
                                                                                     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2770)
                                                                                     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2892) 
                                                                                     at android.app.ActivityThread.-wrap11(Unknown Source:0) 
                                                                                     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1593) 
                                                                                     at android.os.Handler.dispatchMessage(Handler.java:105) 
                                                                                     at android.os.Looper.loop(Looper.java:164) 
                                                                                     at android.app.ActivityThread.main(ActivityThread.java:6541) 
                                                                                     at java.lang.reflect.Method.invoke(Native Method) 
                                                                                     at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240) 
                                                                                     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:767) 

编辑:正如ianhanniballake的回答中所建议我设定意图并得到了java.lang.NullPointerException: intent's action must be set所以我尝试了new Intent("com.android.launcher.action.INSTALL_SHORTCUT").代码运行但没有创建快捷方式.

编辑2:这是我现在正在运行的代码,但我没有在主屏幕上看到快捷方式.

ShortcutManager shortcutManager = getSystemService(ShortcutManager.class);
ShortcutInfo.Builder mShortcutInfo = new ShortcutInfo.Builder(MainActivity.this, getString(R.string.app_name));
mShortcutInfo.setShortLabel(getString(R.string.app_name));
mShortcutInfo.setLongLabel(getString(R.string.app_name));
mShortcutInfo.setIcon(Icon.createWithResource(MainActivity.this, R.mipmap.ic_launcher));
Intent shortcutIntent = new Intent(getApplicationContext(), MainActivity.class);
shortcutIntent.setAction(Intent.ACTION_CREATE_SHORTCUT);
shortcutIntent.putExtra("duplicate", false);
mShortcutInfo.setIntent(shortcutIntent);
sendBroadcast(shortcutManager.createShortcutResultIntent(mShortcutInfo.build()));

编辑3:

ShortcutInfo.Builder mShortcutInfoBuilder = new ShortcutInfo.Builder(MainActivity.this, getString(R.string.app_name));
mShortcutInfoBuilder.setShortLabel(getString(R.string.app_name));
mShortcutInfoBuilder.setLongLabel(getString(R.string.app_name));
mShortcutInfoBuilder.setIcon(Icon.createWithResource(MainActivity.this, R.mipmap.ic_launcher));
Intent shortcutIntent = new Intent(getApplicationContext(), MainActivity.class);
shortcutIntent.setAction(Intent.ACTION_CREATE_SHORTCUT);
mShortcutInfoBuilder.setIntent(shortcutIntent);
ShortcutInfo mShortcutInfo = mShortcutInfoBuilder.build();
ShortcutManager mShortcutManager = getSystemService(ShortcutManager.class);
mShortcutManager.requestPinShortcut(mShortcutInfo, null);

这将打开如下权限对话框:

但问题是它没有出现在应用前景中.仅在按后退键后才会出现.它也不会出现在主页按键上.

Answer 1

您必须调用setIntent()：

mShortcutInfo.setIntent(new Intent(getApplicationContext(), MainActivity.class));