Android Setting设置中添加上一步按钮

需求

由于系统屏蔽了按键已经下拉功能，需要在进入Setting后返回

效果

实现效果如下图：

分析

Android 系统中已经添加了上一步和下一步按钮，因此只需根据需求打开即可

---

patch

diff --git a/packages/apps/Settings/src/com/android/settings/SettingsActivity.java b/packages/apps/Settings/src/com/android/settings/SettingsActivity.java
index afcb85e..9b66681 100644 (file)
--- a/packages/apps/Settings/src/com/android/settings/SettingsActivity.java
+++ b/packages/apps/Settings/src/com/android/settings/SettingsActivity.java
@@ -574,9 +574,10 @@ public class SettingsActivity extends SettingsDrawerActivity
             }
         }
 
-        setContentView(mIsShowingDashboard ?
-                R.layout.settings_main_dashboard : R.layout.settings_main_prefs);
+        // setContentView(mIsShowingDashboard ?
+                // R.layout.settings_main_dashboard : R.layout.settings_main_prefs);
 
+        setContentView(R.layout.settings_main_prefs);
         mContent = (ViewGroup) findViewById(R.id.main_content);
 
         getFragmentManager().addOnBackStackChangedListener(this);
@@ -655,7 +656,7 @@ public class SettingsActivity extends SettingsDrawerActivity
         }
 
         // see if we should show Back/Next buttons
-        if (intent.getBooleanExtra(EXTRA_PREFS_SHOW_BUTTON_BAR, false)) {
+        // if (intent.getBooleanExtra(EXTRA_PREFS_SHOW_BUTTON_BAR, false)) {
 
             View buttonBar = findViewById(R.id.button_bar);
             if (buttonBar != null) {
@@ -675,38 +676,43 @@ public class SettingsActivity extends SettingsDrawerActivity
                         finish();
                     }
                 });
-                mNextButton = (Button)findViewById(R.id.next_button);
-                mNextButton.setOnClickListener(new OnClickListener() {
-                    public void onClick(View v) {
-                        setResult(RESULT_OK, getResultIntentData());
-                        finish();
-                    }
-                });
-
-                // set our various button parameters
-                if (intent.hasExtra(EXTRA_PREFS_SET_NEXT_TEXT)) {
-                    String buttonText = intent.getStringExtra(EXTRA_PREFS_SET_NEXT_TEXT);
-                    if (TextUtils.isEmpty(buttonText)) {
-                        mNextButton.setVisibility(View.GONE);
-                    }
-                    else {
-                        mNextButton.setText(buttonText);
-                    }
-                }
-                if (intent.hasExtra(EXTRA_PREFS_SET_BACK_TEXT)) {
-                    String buttonText = intent.getStringExtra(EXTRA_PREFS_SET_BACK_TEXT);
-                    if (TextUtils.isEmpty(buttonText)) {
-                        backButton.setVisibility(View.GONE);
-                    }
-                    else {
-                        backButton.setText(buttonText);
-                    }
-                }
+               mNextButton = (Button)findViewById(R.id.next_button);
+               mNextButton.setOnClickListener(new OnClickListener() {
+                   public void onClick(View v) {
+                       setResult(RESULT_OK, getResultIntentData());
+                       finish();
+                   }
+               });
+
+               // set our various button parameters
+/*
+ *                 if (intent.hasExtra(EXTRA_PREFS_SET_NEXT_TEXT)) {
+ *                     String buttonText = intent.getStringExtra(EXTRA_PREFS_SET_NEXT_TEXT);
+ *                     if (TextUtils.isEmpty(buttonText)) {
+ *                         mNextButton.setVisibility(View.GONE);
+ *                     }
+ *                     else {
+ *                         mNextButton.setText(buttonText);
+ *                     }
+ *                 }
+ *                 if (intent.hasExtra(EXTRA_PREFS_SET_BACK_TEXT)) {
+ *                     String buttonText = intent.getStringExtra(EXTRA_PREFS_SET_BACK_TEXT);
+ *                     if (TextUtils.isEmpty(buttonText)) {
+ *                         backButton.setVisibility(View.GONE);
+ *                     }
+ *                     else {
+ *                         backButton.setText(buttonText);
+ *                     }
+ *                 }
+ * 
+ */
+               mNextButton.setVisibility(View.GONE);
+               backButton.setText("上一步");
                 if (intent.getBooleanExtra(EXTRA_PREFS_SHOW_SKIP, false)) {
                     skipButton.setVisibility(View.VISIBLE);
                 }
             }
-        }
+        // }
 
         if (DEBUG_TIMING) Log.d(LOG_TAG, "onCreate took " + (System.currentTimeMillis() - startTime)
                 + " ms");