我的应用程序在 API 23 中不起作用 [英] My App is not working in API 23
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问题描述
音乐应用程序 <uses-sdk android:minSdkVersion="16" android:targetSdkVersion="23"/>，它适用于 API 16，但不适用于 API 23.
The music app which is <uses-sdk android:minSdkVersion="16" android:targetSdkVersion="23" />, it works on API 16 , but not in API 23.
listview 没有加载歌曲，在 API23 中检查时显示为空，在 API16 中工作正常.
The listview is not loaded with songs, it shows empty when checked in API23, working fine in API16.
在 API22 中也工作正常
import java.io.File;
import java.util.ArrayList;
import java.util.HashMap;
import android.app.ListActivity;
import android.content.Context;
import android.content.Intent;
import android.graphics.Color;
import android.os.Bundle;
import android.os.Environment;
import android.view.ContextMenu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.inputmethod.InputMethodManager;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ListView;
import android.widget.SearchView;
import android.widget.SimpleAdapter;
import android.widget.TextView;
public class PlayListActivity extends ListActivity {
// Songs list
public ArrayList<HashMap<String, String>> songsList = new ArrayList<HashMap<String, String>>();
SearchView sv;
ListView lv;
SimpleAdapter adapter;
ArrayList<HashMap<String, String>> songsListData = new ArrayList<>();
int songIndex;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.playlist);
sv = (SearchView)findViewById(R.id.searchView);
int id = sv.getContext().getResources().getIdentifier("android:id/search_src_text", null, null);
TextView textView = (TextView) sv.findViewById(id);
textView.setTextColor(Color.WHITE);
textView.setHintTextColor(Color.LTGRAY);
SongsManager plm = new SongsManager();
// get all songs from sdcard
this.songsList = plm.getPlayList(Environment.getExternalStorageDirectory());
if(songsList!=null && songsList.size()>0) {
// looping through playlist
for (int i = 0; i < songsList.size(); i++) {
// creating new HashMap
HashMap<String, String> song = songsList.get(i);
// adding HashList to ArrayList
songsListData.add(song);
}
// Adding menuItems to ListView
adapter = new SimpleAdapter(this, songsListData,
R.layout.playlist_item, new String[]{"songTitle"}, new int[]{
R.id.songTitle});
setListAdapter(adapter);
sv.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
@Override
public boolean onQueryTextSubmit(String query) {
return false;
}
@Override
public boolean onQueryTextChange(String newText) {
adapter.getFilter().filter(newText);
return false;
}
});
// selecting single ListView item
lv = getListView();
// register for context menu
registerForContextMenu(lv);
// listening to single listitem click
lv.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
// getting listitem index
songIndex = position;
// Starting new intent
Intent in = new Intent(getApplicationContext(),
MainActivity.class);
// Sending songIndex to PlayerActivity
in.putExtra("songIndex", songIndex);
setResult(100, in);
// Closing PlayListView
finish();
}
});
}
sv.setOnQueryTextFocusChangeListener(new View.OnFocusChangeListener() {
@Override
public void onFocusChange(final View view, boolean hasFocus) {
if (hasFocus) {
view.postDelayed(new Runnable() {
@Override
public void run() {
InputMethodManager imm = (InputMethodManager)getSystemService(Context.INPUT_METHOD_SERVICE);
imm.showSoftInput(view.findFocus(), 0);
}
}, 200);
}
}
});
}
//ListView listView = (ListView)findViewById(android.R.id.list);
@Override
public void onCreateContextMenu(ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo) {
super.onCreateContextMenu(menu, v, menuInfo);
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.playlist_contextmenu,menu);
}
@Override
public boolean onContextItemSelected(MenuItem item) {
AdapterView.AdapterContextMenuInfo info = (AdapterView.AdapterContextMenuInfo) item.getMenuInfo();
switch (item.getItemId()){
case R.id.delete_id:
songsListData.remove(info.position);
String path = songsList.get(info.position).get("songPath");
File filepath = new File(path);
filepath.delete();
adapter.notifyDataSetChanged();
return true;
default:
return super.onContextItemSelected(item);
}
}
}
连通知图标都不显示，显示空图标我用过 NotificationCompat.Builder
列表视图
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical">
<SearchView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/searchView"
android:background="#242424" //black colour
android:queryHint="Search...">
</SearchView>
<ListView
android:id="@android:id/list"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:divider="@drawable/gradient_horizontal_line"
android:dividerHeight="1dp"
android:listSelector="@drawable/list_selector" // balck colour
android:background="@drawable/list_selector"/>
</LinearLayout>
列表项
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:gravity="center"
android:background="@drawable/list_selector"
android:foreground="#EBEBEB"
android:padding="5dp">
<!--android:background="@drawable/list_selector"-->
<TextView
android:id="@+id/songTitle"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:textSize="16dp"
android:padding="10dp"
android:background="@drawable/list_selector"
android:textColor="#FFFFFF"/> // white colour
<!--android:color="#f3f3f3"-->
</LinearLayout>
list_selector
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<!-- Selector style for listrow -->
<item
android:state_selected="false"
android:state_pressed="false"
android:drawable="@drawable/gradient_bg" />
<item android:state_pressed="true"
android:drawable="@drawable/gradient_bg_hover" />
<item android:state_selected="true"
android:state_pressed="false"
android:drawable="@drawable/gradient_bg_hover" />
</selector>
Styles.xml
<resources>
<!-- Base application theme. -->
<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
<!-- Customize your theme here. -->
<item name="colorPrimary">@color/colorPrimary</item>
<item name="colorPrimaryDark">@color/colorPrimaryDark</item>
<item name="colorAccent">@color/colorAccent</item>
</style>
<style name="AppTheme.NoActionBar">
<item name="windowActionBar">false</item>
<item name="windowNoTitle">true</item>
</style>
<style name="AppTheme.AppBarOverlay" parent="ThemeOverlay.AppCompat.Dark.ActionBar" />
<style name="AppTheme.PopupOverlay" parent="ThemeOverlay.AppCompat.Light" />
<style name="btnStyleBlackpearl" parent="@android:style/Widget.Button">
<item name="android:textSize">15sp</item>
<item name="android:textStyle">bold</item>
<item name="android:textColor">#C4C4C4</item>
<item name="android:gravity">center</item>
<item name="android:shadowColor">#000000</item>
<item name="android:shadowDx">1</item>
<item name="android:shadowDy">1</item>
<item name="android:shadowRadius">0.6</item>
<item name="android:background">@drawable/custom_btn_black_pearl</item>
<item name="android:padding">10dip</item>
</style>
</resources>
请指导..
API 16 - 有效
API 23 - 不工作 - 在模拟器中打开存储权限后
推荐答案
快速修复:在设备/模拟器上转到 Settings ->应用程序 ->你的应用程序 ->权限 并确保选中Storage.从长远来看，您希望您的应用使用新 API在运行时请求权限在 API 23 中添加.
For a quick fix: on the device/emulator goto Settings -> Apps -> Your App -> Permissions and make sure Storage is checked on. Long term, you want your app to request permissions at run time using the new APIs added in API 23.
这篇关于我的应用程序在 API 23 中不起作用的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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