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我有一些建立在Eclipse Android應用程序，現在我開始使用Android Studio的發展Android的材料設計上Android Studio中
我必須遵循這個Build a Material Design App Tutorial
我成功運行本教程中的新項目在Android Studio中使用的進口，並在裝置作品完美
所以，我重新安裝最新的Android工作室，下載最新的SDK還
現在，我要實現它在我的應用程序
步驟，我已經試過
創建新項目
副本教程的所有活動，我的應用程序
副本教程的所有其他文件夾，我的應用程序
複製Android清單教程中的應用程序設置到我的應用程序
副本的build.gradle（模塊的應用程序）的教程，我的應用程序
但它顯示的錯誤，然後我開始跟蹤哪些問題，並發現了一些
import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.NavigationView;
import android.support.design.widget.Snackbar;
import android.support.design.widget.TabLayout;
import android.support.graphics.drawable.VectorDrawableCompat;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.content.res.ResourcesCompat;
import android.support.v4.view.GravityCompat;
import android.support.v4.view.ViewPager;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBar;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import java.util.ArrayList;
import java.util.List;
/**
* Provides UI for the main screen.
*/
public class MainActivity extends AppCompatActivity {
private DrawerLayout mDrawerLayout;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Adding Toolbar to Main screen
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
// Setting ViewPager for each Tabs
ViewPager viewPager = (ViewPager) findViewById(R.id.viewpager);
setupViewPager(viewPager);
// Set Tabs inside Toolbar
TabLayout tabs = (TabLayout) findViewById(R.id.tabs);
tabs.setupWithViewPager(viewPager);
// Create Navigation drawer and inlfate layout
NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer);
// Adding menu icon to Toolbar
ActionBar supportActionBar = getSupportActionBar();
if (supportActionBar != null) {
// Start from this line, if I leave it uncommented, it will make the app crash
//VectorDrawableCompat indicator
// = VectorDrawableCompat.create(getResources(), R.drawable.ic_menu, getTheme());
//indicator.setTint(ResourcesCompat.getColor(getResources(),R.color.white,getTheme()));
//supportActionBar.setHomeAsUpIndicator(indicator);
//supportActionBar.setDisplayHomeAsUpEnabled(true);
}
// Set behavior of Navigation drawer
navigationView.setNavigationItemSelectedListener(
new NavigationView.OnNavigationItemSelectedListener() {
// This method will trigger on item Click of navigation menu
@Override
public boolean onNavigationItemSelected(MenuItem menuItem) {
// Set item in checked state
menuItem.setChecked(true);
// TODO: handle navigation
// Closing drawer on item click
mDrawerLayout.closeDrawers();
return true;
}
});
// Adding Floating Action Button to bottom right of main view
FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Snackbar.make(v, "Hello Snackbar!",
Snackbar.LENGTH_LONG).show();
}
});
}
// Add Fragments to Tabs
private void setupViewPager(ViewPager viewPager) {
Adapter adapter = new Adapter(getSupportFragmentManager());
adapter.addFragment(new ListContentFragment(), "List");
adapter.addFragment(new TileContentFragment(), "Tile");
adapter.addFragment(new CardContentFragment(), "Card");
viewPager.setAdapter(adapter);
}
static class Adapter extends FragmentPagerAdapter {
private final List<Fragment> mFragmentList = new ArrayList<>();
private final List<String> mFragmentTitleList = new ArrayList<>();
public Adapter(FragmentManager manager) {
super(manager);
}
@Override
public Fragment getItem(int position) {
return mFragmentList.get(position);
}
@Override
public int getCount() {
return mFragmentList.size();
}
public void addFragment(Fragment fragment, String title) {
mFragmentList.add(fragment);
mFragmentTitleList.add(title);
}
@Override
public CharSequence getPageTitle(int position) {
return mFragmentTitleList.get(position);
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
} else if (id == android.R.id.home) {
mDrawerLayout.openDrawer(GravityCompat.START);
}
return super.onOptionsItemSelected(item);
}
}
我評論一些片的上述源代碼的代碼，以及應用程序工作良好的裝置
如果我激活代碼，錯誤會顯示這樣
E/AndroidRuntime: FATAL EXCEPTION: main
java.lang.RuntimeException: Unable to start activity ComponentInfo{package.name.MainActivity}: android.content.res.Resources$NotFoundException: File res/drawable-mdpi-v4/ic_menu.png from xml type xml resource ID #0x7f02005e
，這使得該問題的代碼，從這個
**//VectorDrawableCompat indicator
// = VectorDrawableCompat.create(getResources(), R.drawable.ic_menu, getTheme());**
開始，如果我離開它註釋掉，就會使應用程序崩潰
到目前爲止，NavigationView，FloatingActionButton等效果很好
那麼，VectorDrawableCompat有什麼問題，以及如何解決它？
由於之前
你有最新的SDK安裝？ –
從'folder'中刪除'Drawable'。 –
我認爲當你創建一個新的項目時，AS會創建mipmap文件夾而不是可繪製的文件夾。如果是這樣的話，將'R.drawable.ic_menu'改爲'R.mipmap.ic_menu' – NSimon